author  blanchet 
Mon, 06 Jun 2011 20:56:06 +0200  
changeset 43213  e1fdd27e0c98 
parent 43210  7384b771805d 
child 43214  4e850b2c1f5c 
permissions  rwrr 
40114  1 
(* Title: HOL/Tools/Sledgehammer/sledgehammer_atp_translate.ML 
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Author: Fabian Immler, TU Muenchen 
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Author: Makarius 
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Author: Jasmin Blanchette, TU Muenchen 
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Translation of HOL to FOL for Sledgehammer. 
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*) 
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signature ATP_TRANSLATE = 
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sig 
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type 'a fo_term = 'a ATP_Problem.fo_term 
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type connective = ATP_Problem.connective 
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type ('a, 'b, 'c) formula = ('a, 'b, 'c) ATP_Problem.formula 
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type format = ATP_Problem.format 
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type formula_kind = ATP_Problem.formula_kind 
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type 'a problem = 'a ATP_Problem.problem 
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type name = string * string 
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datatype type_literal = 
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TyLitVar of name * name  
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TyLitFree of name * name 
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datatype arity_literal = 
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TConsLit of name * name * name list  
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TVarLit of name * name 
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type arity_clause = 
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{name: string, 

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prem_lits: arity_literal list, 

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concl_lits: arity_literal} 

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type class_rel_clause = 
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{name: string, 

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subclass: name, 

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superclass: name} 

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datatype combterm = 
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CombConst of name * typ * typ list  
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CombVar of name * typ  
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CombApp of combterm * combterm 
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datatype locality = General  Intro  Elim  Simp  Local  Assum  Chained 
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datatype polymorphism = Polymorphic  Monomorphic  Mangled_Monomorphic 
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datatype type_level = 
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All_Types  Nonmonotonic_Types  Finite_Types  Const_Arg_Types  No_Types 
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datatype type_heaviness = Heavyweight  Lightweight 
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datatype type_sys = 
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Simple_Types of type_level  
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Preds of polymorphism * type_level * type_heaviness  
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Tags of polymorphism * type_level * type_heaviness 

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type translated_formula 
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val bound_var_prefix : string 
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val schematic_var_prefix: string 
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val fixed_var_prefix: string 
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val tvar_prefix: string 
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val tfree_prefix: string 
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val const_prefix: string 
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val type_const_prefix: string 
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val class_prefix: string 
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val skolem_const_prefix : string 
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val old_skolem_const_prefix : string 
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val new_skolem_const_prefix : string 
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val type_decl_prefix : string 
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val sym_decl_prefix : string 
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val preds_sym_formula_prefix : string 
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val lightweight_tags_sym_formula_prefix : string 
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val fact_prefix : string 
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val conjecture_prefix : string 
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val helper_prefix : string 
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val class_rel_clause_prefix : string 
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val arity_clause_prefix : string 
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val tfree_clause_prefix : string 
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val typed_helper_suffix : string 
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val untyped_helper_suffix : string 
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val type_tag_idempotence_helper_name : string 
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val predicator_name : string 
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val app_op_name : string 
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val type_tag_name : string 
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val type_pred_name : string 
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val simple_type_prefix : string 
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val prefixed_predicator_name : string 
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val prefixed_app_op_name : string 
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val prefixed_type_tag_name : string 
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val ascii_of: string > string 
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val unascii_of: string > string 
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val strip_prefix_and_unascii : string > string > string option 
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val proxy_table : (string * (string * (thm * (string * string)))) list 
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val proxify_const : string > (string * string) option 
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val invert_const: string > string 
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val unproxify_const: string > string 
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val make_bound_var : string > string 
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val make_schematic_var : string * int > string 
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val make_fixed_var : string > string 
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val make_schematic_type_var : string * int > string 
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val make_fixed_type_var : string > string 
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val make_fixed_const : string > string 
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val make_fixed_type_const : string > string 
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val make_type_class : string > string 
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val new_skolem_var_name_from_const : string > string 
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val num_type_args : theory > string > int 

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val make_arity_clauses : 
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theory > string list > class list > class list * arity_clause list 
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val make_class_rel_clauses : 
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theory > class list > class list > class_rel_clause list 
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val combtyp_of : combterm > typ 
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val strip_combterm_comb : combterm > combterm * combterm list 
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val atyps_of : typ > typ list 
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val combterm_from_term : 
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theory > (string * typ) list > term > combterm * typ list 
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val is_locality_global : locality > bool 
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val type_sys_from_string : string > type_sys 
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val polymorphism_of_type_sys : type_sys > polymorphism 

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val level_of_type_sys : type_sys > type_level 

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val is_type_sys_virtually_sound : type_sys > bool 

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val is_type_sys_fairly_sound : type_sys > bool 

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val choose_format : format list > type_sys > format * type_sys 

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val raw_type_literals_for_types : typ list > type_literal list 
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val mk_aconns : 
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connective > ('a, 'b, 'c) formula list > ('a, 'b, 'c) formula 
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val unmangled_const_name : string > string 
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val unmangled_const : string > string * string fo_term list 
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val translate_atp_fact : 
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Proof.context > format > type_sys > bool > (string * locality) * thm 
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> translated_formula option * ((string * locality) * thm) 
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val helper_table : ((string * bool) * thm list) list 
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val should_specialize_helper : type_sys > term > bool 
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val tfree_classes_of_terms : term list > string list 
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val tvar_classes_of_terms : term list > string list 
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val type_constrs_of_terms : theory > term list > string list 
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val prepare_atp_problem : 
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Proof.context > format > formula_kind > formula_kind > type_sys 
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> bool option > bool > bool > term list > term 
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> (translated_formula option * ((string * 'a) * thm)) list 
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> string problem * string Symtab.table * int * int 
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* (string * 'a) list vector * int list * int Symtab.table 
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val atp_problem_weights : string problem > (string * real) list 
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end; 
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structure ATP_Translate : ATP_TRANSLATE = 
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struct 
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open ATP_Util 
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open ATP_Problem 
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type name = string * string 
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(* FIXME: avoid *) 
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fun union_all xss = fold (union (op =)) xss [] 
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(* experimental *) 
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val generate_useful_info = false 
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fun useful_isabelle_info s = 
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if generate_useful_info then 

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SOME (ATerm ("[]", [ATerm ("isabelle_" ^ s, [])])) 

161 
else 

162 
NONE 

163 

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val intro_info = useful_isabelle_info "intro" 

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val elim_info = useful_isabelle_info "elim" 

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val simp_info = useful_isabelle_info "simp" 

167 

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val bound_var_prefix = "B_" 
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val schematic_var_prefix = "V_" 
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val fixed_var_prefix = "v_" 
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val tvar_prefix = "T_" 
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val tfree_prefix = "t_" 
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val const_prefix = "c_" 
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val type_const_prefix = "tc_" 
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val class_prefix = "cl_" 
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val skolem_const_prefix = "Sledgehammer" ^ Long_Name.separator ^ "Sko" 
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val old_skolem_const_prefix = skolem_const_prefix ^ "o" 
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val new_skolem_const_prefix = skolem_const_prefix ^ "n" 
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val type_decl_prefix = "ty_" 
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val sym_decl_prefix = "sy_" 
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val preds_sym_formula_prefix = "psy_" 
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val lightweight_tags_sym_formula_prefix = "tsy_" 
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val fact_prefix = "fact_" 
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val conjecture_prefix = "conj_" 
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val helper_prefix = "help_" 
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val class_rel_clause_prefix = "clar_" 
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val arity_clause_prefix = "arity_" 
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val tfree_clause_prefix = "tfree_" 
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val typed_helper_suffix = "_T" 
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val untyped_helper_suffix = "_U" 
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val type_tag_idempotence_helper_name = helper_prefix ^ "ti_idem" 
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val predicator_name = "hBOOL" 
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val app_op_name = "hAPP" 
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val type_tag_name = "ti" 
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val type_pred_name = "is" 
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val simple_type_prefix = "ty_" 
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val prefixed_predicator_name = const_prefix ^ predicator_name 
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val prefixed_app_op_name = const_prefix ^ app_op_name 
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val prefixed_type_tag_name = const_prefix ^ type_tag_name 
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(* Freshness almost guaranteed! *) 
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val sledgehammer_weak_prefix = "Sledgehammer:" 
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(*Escaping of special characters. 
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Alphanumeric characters are left unchanged. 
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The character _ goes to __ 
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Characters in the range ASCII space to / go to _A to _P, respectively. 
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Other characters go to _nnn where nnn is the decimal ASCII code.*) 
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val upper_a_minus_space = Char.ord #"A"  Char.ord #" " 
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fun stringN_of_int 0 _ = "" 
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 stringN_of_int k n = 
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stringN_of_int (k  1) (n div 10) ^ string_of_int (n mod 10) 
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fun ascii_of_char c = 
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if Char.isAlphaNum c then 
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String.str c 
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else if c = #"_" then 
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"__" 
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else if #" " <= c andalso c <= #"/" then 
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"_" ^ String.str (Char.chr (Char.ord c + upper_a_minus_space)) 
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else 
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(* fixed width, in case more digits follow *) 
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"_" ^ stringN_of_int 3 (Char.ord c) 
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val ascii_of = String.translate ascii_of_char 
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(** Remove ASCII armoring from names in proof files **) 
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236 

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(* We don't raise error exceptions because this code can run inside a worker 
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thread. Also, the errors are impossible. *) 
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val unascii_of = 
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let 
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fun un rcs [] = String.implode(rev rcs) 
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 un rcs [#"_"] = un (#"_" :: rcs) [] (* ERROR *) 
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(* Three types of _ escapes: __, _A to _P, _nnn *) 
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 un rcs (#"_" :: #"_" :: cs) = un (#"_"::rcs) cs 
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 un rcs (#"_" :: c :: cs) = 
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if #"A" <= c andalso c<= #"P" then 
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(* translation of #" " to #"/" *) 
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un (Char.chr (Char.ord c  upper_a_minus_space) :: rcs) cs 
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else 
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let val digits = List.take (c::cs, 3) handle Subscript => [] in 
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case Int.fromString (String.implode digits) of 
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SOME n => un (Char.chr n :: rcs) (List.drop (cs, 2)) 
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 NONE => un (c:: #"_"::rcs) cs (* ERROR *) 
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end 
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 un rcs (c :: cs) = un (c :: rcs) cs 
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in un [] o String.explode end 
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(* If string s has the prefix s1, return the result of deleting it, 
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unASCII'd. *) 
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fun strip_prefix_and_unascii s1 s = 
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if String.isPrefix s1 s then 
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SOME (unascii_of (String.extract (s, size s1, NONE))) 
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else 
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NONE 
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val proxy_table = 
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[("c_False", (@{const_name False}, (@{thm fFalse_def}, 
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("fFalse", @{const_name ATP.fFalse})))), 
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("c_True", (@{const_name True}, (@{thm fTrue_def}, 
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("fTrue", @{const_name ATP.fTrue})))), 
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("c_Not", (@{const_name Not}, (@{thm fNot_def}, 
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("fNot", @{const_name ATP.fNot})))), 
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("c_conj", (@{const_name conj}, (@{thm fconj_def}, 
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("fconj", @{const_name ATP.fconj})))), 
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("c_disj", (@{const_name disj}, (@{thm fdisj_def}, 
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("fdisj", @{const_name ATP.fdisj})))), 
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("c_implies", (@{const_name implies}, (@{thm fimplies_def}, 
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("fimplies", @{const_name ATP.fimplies})))), 
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("equal", (@{const_name HOL.eq}, (@{thm fequal_def}, 
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("fequal", @{const_name ATP.fequal}))))] 
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val proxify_const = AList.lookup (op =) proxy_table #> Option.map (snd o snd) 
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(* Readable names for the more common symbolic functions. Do not mess with the 
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table unless you know what you are doing. *) 
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val const_trans_table = 
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[(@{type_name Product_Type.prod}, "prod"), 
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(@{type_name Sum_Type.sum}, "sum"), 
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(@{const_name False}, "False"), 
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(@{const_name True}, "True"), 
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(@{const_name Not}, "Not"), 
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(@{const_name conj}, "conj"), 
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(@{const_name disj}, "disj"), 
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(@{const_name implies}, "implies"), 
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(@{const_name HOL.eq}, "equal"), 
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(@{const_name If}, "If"), 
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(@{const_name Set.member}, "member"), 
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(@{const_name Meson.COMBI}, "COMBI"), 
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(@{const_name Meson.COMBK}, "COMBK"), 
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(@{const_name Meson.COMBB}, "COMBB"), 
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(@{const_name Meson.COMBC}, "COMBC"), 
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(@{const_name Meson.COMBS}, "COMBS")] 
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> Symtab.make 
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> fold (Symtab.update o swap o snd o snd o snd) proxy_table 
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(* Invert the table of translations between Isabelle and ATPs. *) 
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val const_trans_table_inv = 
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const_trans_table > Symtab.dest > map swap > Symtab.make 
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val const_trans_table_unprox = 
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Symtab.empty 
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> fold (fn (_, (isa, (_, (_, atp)))) => Symtab.update (atp, isa)) proxy_table 
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val invert_const = perhaps (Symtab.lookup const_trans_table_inv) 
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val unproxify_const = perhaps (Symtab.lookup const_trans_table_unprox) 
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fun lookup_const c = 
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case Symtab.lookup const_trans_table c of 
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SOME c' => c' 
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 NONE => ascii_of c 
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(*Remove the initial ' character from a type variable, if it is present*) 
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fun trim_type_var s = 
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if s <> "" andalso String.sub(s,0) = #"'" then String.extract(s,1,NONE) 
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else raise Fail ("trim_type: Malformed type variable encountered: " ^ s) 
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fun ascii_of_indexname (v,0) = ascii_of v 
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 ascii_of_indexname (v,i) = ascii_of v ^ "_" ^ string_of_int i 
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fun make_bound_var x = bound_var_prefix ^ ascii_of x 
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fun make_schematic_var v = schematic_var_prefix ^ ascii_of_indexname v 
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fun make_fixed_var x = fixed_var_prefix ^ ascii_of x 
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fun make_schematic_type_var (x,i) = 
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tvar_prefix ^ (ascii_of_indexname (trim_type_var x, i)) 
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fun make_fixed_type_var x = tfree_prefix ^ (ascii_of (trim_type_var x)) 
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(* HOL.eq MUST BE "equal" because it's built into ATPs. *) 
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fun make_fixed_const @{const_name HOL.eq} = "equal" 
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 make_fixed_const c = const_prefix ^ lookup_const c 
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fun make_fixed_type_const c = type_const_prefix ^ lookup_const c 
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fun make_type_class clas = class_prefix ^ ascii_of clas 
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43093  345 
fun new_skolem_var_name_from_const s = 
346 
let val ss = s > space_explode Long_Name.separator in 

347 
nth ss (length ss  2) 

348 
end 

349 

350 
(* The number of type arguments of a constant, zero if it's monomorphic. For 

351 
(instances of) Skolem pseudoconstants, this information is encoded in the 

352 
constant name. *) 

353 
fun num_type_args thy s = 

354 
if String.isPrefix skolem_const_prefix s then 

355 
s > space_explode Long_Name.separator > List.last > Int.fromString > the 

356 
else 

357 
(s, Sign.the_const_type thy s) > Sign.const_typargs thy > length 

358 

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(** Definitions and functions for FOL clauses and formulas for TPTP **) 
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(* The first component is the type class; the second is a "TVar" or "TFree". *) 
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datatype type_literal = 
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TyLitVar of name * name  
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TyLitFree of name * name 
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(** Isabelle arities **) 
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datatype arity_literal = 
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TConsLit of name * name * name list  
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TVarLit of name * name 
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fun gen_TVars 0 = [] 
43093  374 
 gen_TVars n = ("T_" ^ string_of_int n) :: gen_TVars (n1) 
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fun pack_sort (_,[]) = [] 
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 pack_sort (tvar, "HOL.type" :: srt) = 
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pack_sort (tvar, srt) (* IGNORE sort "type" *) 
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 pack_sort (tvar, cls :: srt) = 
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(`make_type_class cls, `I tvar) :: pack_sort (tvar, srt) 
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43086  382 
type arity_clause = 
383 
{name: string, 

384 
prem_lits: arity_literal list, 

385 
concl_lits: arity_literal} 

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(* Arity of type constructor "tcon :: (arg1, ..., argN) res" *) 
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fun make_axiom_arity_clause (tcons, name, (cls, args)) = 
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let 
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val tvars = gen_TVars (length args) 
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val tvars_srts = ListPair.zip (tvars, args) 
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in 
43086  393 
{name = name, 
394 
prem_lits = map TVarLit (union_all (map pack_sort tvars_srts)), 

395 
concl_lits = TConsLit (`make_type_class cls, 

396 
`make_fixed_type_const tcons, 

397 
tvars ~~ tvars)} 

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end 
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399 

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fun arity_clause _ _ (_, []) = [] 
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 arity_clause seen n (tcons, ("HOL.type",_)::ars) = (*ignore*) 
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arity_clause seen n (tcons,ars) 
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 arity_clause seen n (tcons, (ar as (class,_)) :: ars) = 
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if member (op =) seen class then (*multiple arities for the same tycon, class pair*) 
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make_axiom_arity_clause (tcons, lookup_const tcons ^ "_" ^ class ^ "_" ^ string_of_int n, ar) :: 
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arity_clause seen (n+1) (tcons,ars) 
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else 
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make_axiom_arity_clause (tcons, lookup_const tcons ^ "_" ^ class, ar) :: 
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arity_clause (class::seen) n (tcons,ars) 
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410 

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fun multi_arity_clause [] = [] 
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 multi_arity_clause ((tcons, ars) :: tc_arlists) = 
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arity_clause [] 1 (tcons, ars) @ multi_arity_clause tc_arlists 
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(*Generate all pairs (tycon,class,sorts) such that tycon belongs to class in theory thy 
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provided its arguments have the corresponding sorts.*) 
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fun type_class_pairs thy tycons classes = 
43093  418 
let 
419 
val alg = Sign.classes_of thy 

420 
fun domain_sorts tycon = Sorts.mg_domain alg tycon o single 

421 
fun add_class tycon class = 

422 
cons (class, domain_sorts tycon class) 

423 
handle Sorts.CLASS_ERROR _ => I 

424 
fun try_classes tycon = (tycon, fold (add_class tycon) classes []) 

425 
in map try_classes tycons end 

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(*Proving one (tycon, class) membership may require proving others, so iterate.*) 
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fun iter_type_class_pairs _ _ [] = ([], []) 
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 iter_type_class_pairs thy tycons classes = 
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let val cpairs = type_class_pairs thy tycons classes 
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val newclasses = union_all (union_all (union_all (map (map #2 o #2) cpairs))) 
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> subtract (op =) classes > subtract (op =) HOLogic.typeS 
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val (classes', cpairs') = iter_type_class_pairs thy tycons newclasses 
43093  434 
in (union (op =) classes' classes, union (op =) cpairs' cpairs) end 
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435 

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fun make_arity_clauses thy tycons = 
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iter_type_class_pairs thy tycons ##> multi_arity_clause 
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438 

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439 

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440 
(** Isabelle class relations **) 
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43086  442 
type class_rel_clause = 
443 
{name: string, 

444 
subclass: name, 

445 
superclass: name} 

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446 

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447 
(*Generate all pairs (sub,super) such that sub is a proper subclass of super in theory thy.*) 
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448 
fun class_pairs _ [] _ = [] 
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449 
 class_pairs thy subs supers = 
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450 
let 
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451 
val class_less = Sorts.class_less (Sign.classes_of thy) 
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452 
fun add_super sub super = class_less (sub, super) ? cons (sub, super) 
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453 
fun add_supers sub = fold (add_super sub) supers 
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454 
in fold add_supers subs [] end 
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455 

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456 
fun make_class_rel_clause (sub,super) = 
43086  457 
{name = sub ^ "_" ^ super, 
458 
subclass = `make_type_class sub, 

459 
superclass = `make_type_class super} 

43085
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460 

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461 
fun make_class_rel_clauses thy subs supers = 
43093  462 
map make_class_rel_clause (class_pairs thy subs supers) 
43085
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463 

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464 
datatype combterm = 
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465 
CombConst of name * typ * typ list  
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466 
CombVar of name * typ  
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467 
CombApp of combterm * combterm 
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468 

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469 
fun combtyp_of (CombConst (_, T, _)) = T 
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470 
 combtyp_of (CombVar (_, T)) = T 
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471 
 combtyp_of (CombApp (t1, _)) = snd (dest_funT (combtyp_of t1)) 
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472 

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473 
(*gets the head of a combinator application, along with the list of arguments*) 
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474 
fun strip_combterm_comb u = 
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475 
let fun stripc (CombApp(t,u), ts) = stripc (t, u::ts) 
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476 
 stripc x = x 
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477 
in stripc(u,[]) end 
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478 

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479 
fun atyps_of T = fold_atyps (insert (op =)) T [] 
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480 

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481 
fun new_skolem_const_name s num_T_args = 
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482 
[new_skolem_const_prefix, s, string_of_int num_T_args] 
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483 
> space_implode Long_Name.separator 
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484 

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485 
(* Converts a term (with combinators) into a combterm. Also accumulates sort 
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486 
infomation. *) 
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487 
fun combterm_from_term thy bs (P $ Q) = 
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488 
let 
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489 
val (P', P_atomics_Ts) = combterm_from_term thy bs P 
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490 
val (Q', Q_atomics_Ts) = combterm_from_term thy bs Q 
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491 
in (CombApp (P', Q'), union (op =) P_atomics_Ts Q_atomics_Ts) end 
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492 
 combterm_from_term thy _ (Const (c, T)) = 
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493 
let 
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494 
val tvar_list = 
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495 
(if String.isPrefix old_skolem_const_prefix c then 
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496 
[] > Term.add_tvarsT T > map TVar 
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497 
else 
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498 
(c, T) > Sign.const_typargs thy) 
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499 
val c' = CombConst (`make_fixed_const c, T, tvar_list) 
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500 
in (c', atyps_of T) end 
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501 
 combterm_from_term _ _ (Free (v, T)) = 
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502 
(CombConst (`make_fixed_var v, T, []), atyps_of T) 
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503 
 combterm_from_term _ _ (Var (v as (s, _), T)) = 
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504 
(if String.isPrefix Meson_Clausify.new_skolem_var_prefix s then 
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505 
let 
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506 
val Ts = T > strip_type > swap > op :: 
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507 
val s' = new_skolem_const_name s (length Ts) 
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508 
in CombConst (`make_fixed_const s', T, Ts) end 
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509 
else 
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510 
CombVar ((make_schematic_var v, s), T), atyps_of T) 
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511 
 combterm_from_term _ bs (Bound j) = 
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512 
nth bs j 
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513 
> (fn (s, T) => (CombConst (`make_bound_var s, T, []), atyps_of T)) 
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514 
 combterm_from_term _ _ (Abs _) = raise Fail "HOL clause: Abs" 
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515 

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516 
datatype locality = General  Intro  Elim  Simp  Local  Assum  Chained 
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517 

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518 
(* (quasi)underapproximation of the truth *) 
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519 
fun is_locality_global Local = false 
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520 
 is_locality_global Assum = false 
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521 
 is_locality_global Chained = false 
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522 
 is_locality_global _ = true 
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523 

42613
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524 
datatype polymorphism = Polymorphic  Monomorphic  Mangled_Monomorphic 
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525 
datatype type_level = 
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526 
All_Types  Nonmonotonic_Types  Finite_Types  Const_Arg_Types  No_Types 
43128  527 
datatype type_heaviness = Heavyweight  Lightweight 
42613
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528 

43102  529 
datatype type_sys = 
42722  530 
Simple_Types of type_level  
42837  531 
Preds of polymorphism * type_level * type_heaviness  
532 
Tags of polymorphism * type_level * type_heaviness 

42613
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533 

42689
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
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changeset

534 
fun try_unsuffixes ss s = 
e38590764c34
versions of ! and ? for the ASCIIchallenged Mirabelle
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535 
fold (fn s' => fn NONE => try (unsuffix s') s  some => some) ss NONE 
e38590764c34
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536 

42613
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537 
fun type_sys_from_string s = 
42722  538 
(case try (unprefix "poly_") s of 
539 
SOME s => (SOME Polymorphic, s) 

42613
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540 
 NONE => 
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541 
case try (unprefix "mono_") s of 
42722  542 
SOME s => (SOME Monomorphic, s) 
543 
 NONE => 

544 
case try (unprefix "mangled_") s of 

545 
SOME s => (SOME Mangled_Monomorphic, s) 

546 
 NONE => (NONE, s)) 

42613
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547 
> (fn s => 
42689
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versions of ! and ? for the ASCIIchallenged Mirabelle
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548 
(* "_query" and "_bang" are for the ASCIIchallenged Mirabelle. *) 
e38590764c34
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changeset

549 
case try_unsuffixes ["?", "_query"] s of 
42613
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550 
SOME s => (Nonmonotonic_Types, s) 
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551 
 NONE => 
42689
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552 
case try_unsuffixes ["!", "_bang"] s of 
42613
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553 
SOME s => (Finite_Types, s) 
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554 
 NONE => (All_Types, s)) 
42828  555 
> apsnd (fn s => 
42837  556 
case try (unsuffix "_heavy") s of 
43128  557 
SOME s => (Heavyweight, s) 
558 
 NONE => (Lightweight, s)) 

42837  559 
> (fn (poly, (level, (heaviness, core))) => 
560 
case (core, (poly, level, heaviness)) of 

43128  561 
("simple", (NONE, _, Lightweight)) => Simple_Types level 
42854
d99167ac4f8a
since we always default on the "_light" encoding (for good reasons, according to Judgment Day), get rid of that suffix
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42852
diff
changeset

562 
 ("preds", (SOME poly, _, _)) => Preds (poly, level, heaviness) 
42851
3bb63850488b
removed "poly_tags_light_bang" since highly unsound
blanchet
parents:
42837
diff
changeset

563 
 ("tags", (SOME Polymorphic, All_Types, _)) => 
42854
d99167ac4f8a
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blanchet
parents:
42852
diff
changeset

564 
Tags (Polymorphic, All_Types, heaviness) 
42886
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
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diff
changeset

565 
 ("tags", (SOME Polymorphic, _, _)) => 
208ec29cc013
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566 
(* The actual light encoding is very unsound. *) 
43128  567 
Tags (Polymorphic, level, Heavyweight) 
42854
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parents:
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568 
 ("tags", (SOME poly, _, _)) => Tags (poly, level, heaviness) 
43128  569 
 ("args", (SOME poly, All_Types (* naja *), Lightweight)) => 
570 
Preds (poly, Const_Arg_Types, Lightweight) 

571 
 ("erased", (NONE, All_Types (* naja *), Lightweight)) => 

572 
Preds (Polymorphic, No_Types, Lightweight) 

42753
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
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42750
diff
changeset

573 
 _ => raise Same.SAME) 
c9552e617acc
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parents:
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changeset

574 
handle Same.SAME => error ("Unknown type system: " ^ quote s ^ ".") 
42613
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575 

42722  576 
fun polymorphism_of_type_sys (Simple_Types _) = Mangled_Monomorphic 
42828  577 
 polymorphism_of_type_sys (Preds (poly, _, _)) = poly 
578 
 polymorphism_of_type_sys (Tags (poly, _, _)) = poly 

42613
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579 

42722  580 
fun level_of_type_sys (Simple_Types level) = level 
42828  581 
 level_of_type_sys (Preds (_, level, _)) = level 
582 
 level_of_type_sys (Tags (_, level, _)) = level 

583 

43128  584 
fun heaviness_of_type_sys (Simple_Types _) = Heavyweight 
42837  585 
 heaviness_of_type_sys (Preds (_, _, heaviness)) = heaviness 
586 
 heaviness_of_type_sys (Tags (_, _, heaviness)) = heaviness 

42831
c9b0968484fb
more work on "shallow" encoding + adjustments to other encodings
blanchet
parents:
42830
diff
changeset

587 

42687  588 
fun is_type_level_virtually_sound level = 
589 
level = All_Types orelse level = Nonmonotonic_Types 

42613
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changeset

590 
val is_type_sys_virtually_sound = 
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591 
is_type_level_virtually_sound o level_of_type_sys 
23b13b1bd565
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changeset

592 

23b13b1bd565
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diff
changeset

593 
fun is_type_level_fairly_sound level = 
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changeset

594 
is_type_level_virtually_sound level orelse level = Finite_Types 
23b13b1bd565
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changeset

595 
val is_type_sys_fairly_sound = is_type_level_fairly_sound o level_of_type_sys 
23b13b1bd565
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changeset

596 

42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

597 
fun is_setting_higher_order THF (Simple_Types _) = true 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

598 
 is_setting_higher_order _ _ = false 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

599 

43101
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

600 
fun choose_format formats (Simple_Types level) = 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

601 
if member (op =) formats THF then (THF, Simple_Types level) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

602 
else if member (op =) formats TFF then (TFF, Simple_Types level) 
43128  603 
else choose_format formats (Preds (Mangled_Monomorphic, level, Heavyweight)) 
43101
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

604 
 choose_format formats type_sys = 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

605 
(case hd formats of 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

606 
CNF_UEQ => 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

607 
(CNF_UEQ, case type_sys of 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

608 
Preds stuff => 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

609 
(if is_type_sys_fairly_sound type_sys then Preds else Tags) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

610 
stuff 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

611 
 _ => type_sys) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

612 
 format => (format, type_sys)) 
1d46d85cd78b
make "prepare_atp_problem" more robust w.r.t. choice of type system
blanchet
parents:
43098
diff
changeset

613 

40114  614 
type translated_formula = 
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38748
diff
changeset

615 
{name: string, 
42640
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

616 
locality: locality, 
42525
7a506b0b644f
distinguish FOF and TFF (typed firstorder) in ATP abstract syntax tree
blanchet
parents:
42524
diff
changeset

617 
kind: formula_kind, 
42562  618 
combformula: (name, typ, combterm) formula, 
619 
atomic_types: typ list} 

38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

620 

42640
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

621 
fun update_combformula f ({name, locality, kind, combformula, atomic_types} 
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

622 
: translated_formula) = 
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

623 
{name = name, locality = locality, kind = kind, combformula = f combformula, 
42562  624 
atomic_types = atomic_types} : translated_formula 
42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

625 

42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

626 
fun fact_lift f ({combformula, ...} : translated_formula) = f combformula 
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

627 

43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

628 
val type_instance = Sign.typ_instance o Proof_Context.theory_of 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

629 

b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

630 
fun insert_type ctxt get_T x xs = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

631 
let val T = get_T x in 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

632 
if exists (curry (type_instance ctxt) T o get_T) xs then xs 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

633 
else x :: filter_out (curry (type_instance ctxt o swap) T o get_T) xs 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

634 
end 
42677
25496cd3c199
monotonic type inference in ATP Sledgehammer problems  based on Claessen & al.'s CADE 2011 paper, Sect. 2.3.
blanchet
parents:
42675
diff
changeset

635 

42753
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

636 
(* The Booleans indicate whether all type arguments should be kept. *) 
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

637 
datatype type_arg_policy = 
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

638 
Explicit_Type_Args of bool  
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

639 
Mangled_Type_Args of bool  
c9552e617acc
drop some type arguments to constants in unsound type systems + remove a few type systems that make no sense from the circulation
blanchet
parents:
42750
diff
changeset

640 
No_Type_Args 
41136
30bedf58b177
implemented new type system encoding "overload_args", which is more lightweight than "const_args" (the unsound default) and hopefully almost as sound
blanchet
parents:
41134
diff
changeset

641 

42836  642 
fun should_drop_arg_type_args (Simple_Types _) = 
643 
false (* since TFF doesn't support overloading *) 

644 
 should_drop_arg_type_args type_sys = 

645 
level_of_type_sys type_sys = All_Types andalso 

43128  646 
heaviness_of_type_sys type_sys = Heavyweight 
42831
c9b0968484fb
more work on "shallow" encoding + adjustments to other encodings
blanchet
parents:
42830
diff
changeset

647 

43128  648 
fun general_type_arg_policy (Tags (_, All_Types, Heavyweight)) = No_Type_Args 
43105
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

649 
 general_type_arg_policy type_sys = 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

650 
if level_of_type_sys type_sys = No_Types then 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

651 
No_Type_Args 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

652 
else if polymorphism_of_type_sys type_sys = Mangled_Monomorphic then 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

653 
Mangled_Type_Args (should_drop_arg_type_args type_sys) 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

654 
else 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

655 
Explicit_Type_Args (should_drop_arg_type_args type_sys) 
42563  656 

42951
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

657 
fun type_arg_policy type_sys s = 
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

658 
if s = @{const_name HOL.eq} orelse 
42966
4e2d6c1e5392
more work on parsing LEOII proofs without lambdas
blanchet
parents:
42963
diff
changeset

659 
(s = app_op_name andalso level_of_type_sys type_sys = Const_Arg_Types) then 
42951
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

660 
No_Type_Args 
43105
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

661 
else if s = type_tag_name then 
bb0ceef7d39f
no need for type arguments with "xxx_tags_heavy" type system
blanchet
parents:
43104
diff
changeset

662 
Explicit_Type_Args false 
42951
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

663 
else 
40bf0173fbed
pass no type args to hAPP in "poly_args" type system, which is unsound anyway and should correspond as closely as possible to the old unsound encoding
blanchet
parents:
42944
diff
changeset

664 
general_type_arg_policy type_sys 
42227
662b50b7126f
if "monomorphize" is enabled, mangle the type information in the names by default
blanchet
parents:
42180
diff
changeset

665 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

666 
(*Make literals for sorted type variables*) 
43098
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

667 
fun generic_sorts_on_type (_, []) = [] 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

668 
 generic_sorts_on_type ((x, i), s :: ss) = 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

669 
generic_sorts_on_type ((x, i), ss) 
43093  670 
> (if s = the_single @{sort HOL.type} then 
671 
I 

672 
else if i = ~1 then 

673 
cons (TyLitFree (`make_type_class s, `make_fixed_type_var x)) 

674 
else 

675 
cons (TyLitVar (`make_type_class s, 

676 
(make_schematic_type_var (x, i), x)))) 

43098
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

677 
fun sorts_on_tfree (TFree (s, S)) = generic_sorts_on_type ((s, ~1), S) 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

678 
 sorts_on_tfree _ = [] 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

679 
fun sorts_on_tvar (TVar z) = generic_sorts_on_type z 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

680 
 sorts_on_tvar _ = [] 
43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

681 

43098
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

682 
(* Given a list of sorted type variables, return a list of type literals. *) 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

683 
fun raw_type_literals_for_types Ts = 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

684 
union_all (map sorts_on_tfree Ts @ map sorts_on_tvar Ts) 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

685 

e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

686 
fun type_literals_for_types type_sys sorts_on_typ Ts = 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

687 
if level_of_type_sys type_sys = No_Types then [] 
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

688 
else union_all (map sorts_on_typ Ts) 
41137
8b634031b2a5
implemented "no_types" encoding, which is too unsound to be useful but can come in handy for evaluations
blanchet
parents:
41136
diff
changeset

689 

42534
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

690 
fun mk_aconns c phis = 
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

691 
let val (phis', phi') = split_last phis in 
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

692 
fold_rev (mk_aconn c) phis' phi' 
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

693 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

694 
fun mk_ahorn [] phi = phi 
42534
46e690db16b8
fake type declarations for fulltype args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents:
42533
diff
changeset

695 
 mk_ahorn phis psi = AConn (AImplies, [mk_aconns AAnd phis, psi]) 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

696 
fun mk_aquant _ [] phi = phi 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

697 
 mk_aquant q xs (phi as AQuant (q', xs', phi')) = 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

698 
if q = q' then AQuant (q, xs @ xs', phi') else AQuant (q, xs, phi) 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

699 
 mk_aquant q xs phi = AQuant (q, xs, phi) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

700 

42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

701 
fun close_universally atom_vars phi = 
41145
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

702 
let 
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

703 
fun formula_vars bounds (AQuant (_, xs, phi)) = 
42526  704 
formula_vars (map fst xs @ bounds) phi 
41145
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

705 
 formula_vars bounds (AConn (_, phis)) = fold (formula_vars bounds) phis 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

706 
 formula_vars bounds (AAtom tm) = 
42526  707 
union (op =) (atom_vars tm [] 
708 
> filter_out (member (op =) bounds o fst)) 

42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

709 
in mk_aquant AForall (formula_vars [] phi []) phi end 
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

710 

42531
a462dbaa584f
added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents:
42530
diff
changeset

711 
fun combterm_vars (CombApp (tm1, tm2)) = fold combterm_vars [tm1, tm2] 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

712 
 combterm_vars (CombConst _) = I 
42574  713 
 combterm_vars (CombVar (name, T)) = insert (op =) (name, SOME T) 
42674  714 
fun close_combformula_universally phi = close_universally combterm_vars phi 
42522
413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

715 

413b56894f82
close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents:
42521
diff
changeset

716 
fun term_vars (ATerm (name as (s, _), tms)) = 
42998
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

717 
is_tptp_variable s ? insert (op =) (name, NONE) #> fold term_vars tms 
42674  718 
fun close_formula_universally phi = close_universally term_vars phi 
41145
a5ee3b8e5a90
improve partially tagged encoding by adding a helper fact that coalesces consecutive "ti" tags
blanchet
parents:
41140
diff
changeset

719 

42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

720 
val homo_infinite_type_name = @{type_name ind} (* any infinite type *) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

721 
val homo_infinite_type = Type (homo_infinite_type_name, []) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

722 

43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

723 
fun fo_term_from_typ format type_sys = 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

724 
let 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

725 
fun term (Type (s, Ts)) = 
43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

726 
ATerm (case (is_setting_higher_order format type_sys, s) of 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

727 
(true, @{type_name bool}) => `I tptp_bool_type 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

728 
 (true, @{type_name fun}) => `I tptp_fun_type 
43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

729 
 _ => if s = homo_infinite_type_name andalso 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

730 
(format = TFF orelse format = THF) then 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

731 
`I tptp_individual_type 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

732 
else 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

733 
`make_fixed_type_const s, 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

734 
map term Ts) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

735 
 term (TFree (s, _)) = ATerm (`make_fixed_type_var s, []) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

736 
 term (TVar ((x as (s, _)), _)) = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

737 
ATerm ((make_schematic_type_var x, s), []) 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

738 
in term end 
42562  739 

740 
(* This shouldn't clash with anything else. *) 

42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

741 
val mangled_type_sep = "\000" 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

742 

42562  743 
fun generic_mangled_type_name f (ATerm (name, [])) = f name 
744 
 generic_mangled_type_name f (ATerm (name, tys)) = 

42761
8ea9c6fa8b53
fixed several bugs in Isar proof reconstruction, in particular w.r.t. mangled types and hAPP
blanchet
parents:
42755
diff
changeset

745 
f name ^ "(" ^ space_implode "," (map (generic_mangled_type_name f) tys) 
8ea9c6fa8b53
fixed several bugs in Isar proof reconstruction, in particular w.r.t. mangled types and hAPP
blanchet
parents:
42755
diff
changeset

746 
^ ")" 
42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

747 

42998
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

748 
val bool_atype = AType (`I tptp_bool_type) 
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

749 

43085
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

750 
fun make_simple_type s = 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

751 
if s = tptp_bool_type orelse s = tptp_fun_type orelse 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

752 
s = tptp_individual_type then 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

753 
s 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

754 
else 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

755 
simple_type_prefix ^ ascii_of s 
0a2f5b86bdd7
first step in sharing more code between ATP and Metis translation
blanchet
parents:
43064
diff
changeset

756 

43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

757 
fun ho_type_from_fo_term format type_sys pred_sym ary = 
42963  758 
let 
759 
fun to_atype ty = 

760 
AType ((make_simple_type (generic_mangled_type_name fst ty), 

761 
generic_mangled_type_name snd ty)) 

762 
fun to_afun f1 f2 tys = AFun (f1 (hd tys), f2 (nth tys 1)) 

42998
1c80902d0456
fully support all type system encodings in typed formats (TFF, THF)
blanchet
parents:
42994
diff
changeset

763 
fun to_fo 0 ty = if pred_sym then bool_atype else to_atype ty 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

764 
 to_fo ary (ATerm (_, tys)) = to_afun to_atype (to_fo (ary  1)) tys 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

765 
fun to_ho (ty as ATerm ((s, _), tys)) = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

766 
if s = tptp_fun_type then to_afun to_ho to_ho tys else to_atype ty 
43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

767 
in if is_setting_higher_order format type_sys then to_ho else to_fo ary end 
42963  768 

43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

769 
fun mangled_type format type_sys pred_sym ary = 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

770 
ho_type_from_fo_term format type_sys pred_sym ary 
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

771 
o fo_term_from_typ format type_sys 
42963  772 

43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

773 
fun mangled_const_name format type_sys T_args (s, s') = 
42963  774 
let 
43178
b5862142d378
use "" type only in THF and TFF  might cause strange failures if used in FOF or CNF, depending on how liberal the prover is
blanchet
parents:
43175
diff
changeset

775 
val ty_args = map (fo_term_from_typ format type_sys) T_args 
42963  776 
fun type_suffix f g = 
777 
fold_rev (curry (op ^) o g o prefix mangled_type_sep 

778 
o generic_mangled_type_name f) ty_args "" 

779 
in (s ^ type_suffix fst ascii_of, s' ^ type_suffix snd I) end 

42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

780 

024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

781 
val parse_mangled_ident = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

782 
Scan.many1 (not o member (op =) ["(", ")", ","]) >> implode 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

783 

024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

784 
fun parse_mangled_type x = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

785 
(parse_mangled_ident 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

786 
 Scan.optional ($$ "("  Scan.optional parse_mangled_types []  $$ ")") 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

787 
[] >> ATerm) x 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

788 
and parse_mangled_types x = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

789 
(parse_mangled_type ::: Scan.repeat ($$ ","  parse_mangled_type)) x 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

790 

024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

791 
fun unmangled_type s = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

792 
s > suffix ")" > raw_explode 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

793 
> Scan.finite Symbol.stopper 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

794 
(Scan.error (!! (fn _ => raise Fail ("unrecognized mangled type " ^ 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

795 
quote s)) parse_mangled_type)) 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

796 
> fst 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

797 

42561
23ddc4e3d19c
have properly typeinstantiated helper facts (combinators and If)
blanchet
parents:
42560
diff
changeset

798 
val unmangled_const_name = space_explode mangled_type_sep #> hd 
42542
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

799 
fun unmangled_const s = 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

800 
let val ss = space_explode mangled_type_sep s in 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

801 
(hd ss, map unmangled_type (tl ss)) 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

802 
end 
024920b65ce2
perform constant mangling and/or removal of its type args in an earlier phase, so that the rest of the code doesn't need to worry about it
blanchet
parents:
42541
diff
changeset

803 

43017
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

804 
fun introduce_proxies format type_sys = 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

805 
let 
43017
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

806 
fun intro top_level (CombApp (tm1, tm2)) = 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

807 
CombApp (intro top_level tm1, intro false tm2) 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

808 
 intro top_level (CombConst (name as (s, _), T, T_args)) = 
42570
77f94ac04f32
cleanup proxification/unproxification and make sure that "num_atp_type_args" is called on the proxy in the reconstruction code, since "c_fequal" has one type arg but the unproxified equal has 0
blanchet
parents:
42569
diff
changeset

809 
(case proxify_const s of 
43159
29b55f292e0b
added support for helpers in new Metis, so far only for polymorphic type encodings
blanchet
parents:
43139
diff
changeset

810 
SOME proxy_base => 
43000
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

811 
if top_level orelse is_setting_higher_order format type_sys then 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

812 
case (top_level, s) of 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

813 
(_, "c_False") => (`I tptp_false, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

814 
 (_, "c_True") => (`I tptp_true, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

815 
 (false, "c_Not") => (`I tptp_not, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

816 
 (false, "c_conj") => (`I tptp_and, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

817 
 (false, "c_disj") => (`I tptp_or, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

818 
 (false, "c_implies") => (`I tptp_implies, []) 
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

819 
 (false, s) => 
43017
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

820 
if is_tptp_equal s then (`I tptp_equal, []) 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

821 
else (proxy_base >> prefix const_prefix, T_args) 
43000
bd424c3dde46
cleaner handling of equality and proxies (esp. for THF)
blanchet
parents:
42998
diff
changeset

822 
 _ => (name, []) 
42569
5737947e4c77
make sure that fequal keeps its type arguments for mangled type systems
blanchet
parents:
42568
diff
changeset

823 
else 
42574  824 
(proxy_base >> prefix const_prefix, T_args) 
825 
 NONE => (name, T_args)) 

826 
> (fn (name, T_args) => CombConst (name, T, T_args)) 

43017
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

827 
 intro _ tm = tm 
944b19ab6003
removed THF equality proxy hack now that Geoff Sutcliffe has fixed SystemOnTPTP
blanchet
parents:
43001
diff
changeset

828 
in intro true end 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

829 

42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

830 
fun combformula_from_prop thy format type_sys eq_as_iff = 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

831 
let 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

832 
fun do_term bs t atomic_types = 
41140
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

833 
combterm_from_term thy bs (Envir.eta_contract t) 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

834 
>> (introduce_proxies format type_sys #> AAtom) 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

835 
> union (op =) atomic_types 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

836 
fun do_quant bs q s T t' = 
38518
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

837 
let val s = Name.variant (map fst bs) s in 
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

838 
do_formula ((s, T) :: bs) t' 
42562  839 
#>> mk_aquant q [(`make_bound_var s, SOME T)] 
38518
54727b44e277
handle bound name conflicts gracefully in FOF translation
blanchet
parents:
38496
diff
changeset

840 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

841 
and do_conn bs c t1 t2 = 
43198  842 
do_formula bs t1 ##>> do_formula bs t2 #>> uncurry (mk_aconn c) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

843 
and do_formula bs t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

844 
case t of 
43096  845 
@{const Trueprop} $ t1 => do_formula bs t1 
846 
 @{const Not} $ t1 => do_formula bs t1 #>> mk_anot 

38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

847 
 Const (@{const_name All}, _) $ Abs (s, T, t') => 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

848 
do_quant bs AForall s T t' 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

849 
 Const (@{const_name Ex}, _) $ Abs (s, T, t') => 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

850 
do_quant bs AExists s T t' 
38795
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

851 
 @{const HOL.conj} $ t1 $ t2 => do_conn bs AAnd t1 t2 
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

852 
 @{const HOL.disj} $ t1 $ t2 => do_conn bs AOr t1 t2 
38786
e46e7a9cb622
formerly unnamed infix impliciation now named HOL.implies
haftmann
parents:
38752
diff
changeset

853 
 @{const HOL.implies} $ t1 $ t2 => do_conn bs AImplies t1 t2 
38864
4abe644fcea5
formerly unnamed infix equality now named HOL.eq
haftmann
parents:
38829
diff
changeset

854 
 Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _])) $ t1 $ t2 => 
41140
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

855 
if eq_as_iff then do_conn bs AIff t1 t2 else do_term bs t 
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

856 
 _ => do_term bs t 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

857 
in do_formula [] end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

858 

42750
c8b1d9ee3758
ensure Set.member isn't introduced by Meson's preprocessing if it's supposed to be unfolded
blanchet
parents:
42747
diff
changeset

859 
fun presimplify_term ctxt = 
c8b1d9ee3758
ensure Set.member isn't introduced by Meson's preprocessing if it's supposed to be unfolded
blanchet
parents:
42747
diff
changeset

860 
Skip_Proof.make_thm (Proof_Context.theory_of ctxt) 
c8b1d9ee3758
ensure Set.member isn't introduced by Meson's preprocessing if it's supposed to be unfolded
blanchet
parents:
42747
diff
changeset

861 
#> Meson.presimplify ctxt 
c8b1d9ee3758
ensure Set.member isn't introduced by Meson's preprocessing if it's supposed to be unfolded
blanchet
parents:
42747
diff
changeset

862 
#> prop_of 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

863 

41491  864 
fun concealed_bound_name j = sledgehammer_weak_prefix ^ string_of_int j 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

865 
fun conceal_bounds Ts t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

866 
subst_bounds (map (Free o apfst concealed_bound_name) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

867 
(0 upto length Ts  1 ~~ Ts), t) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

868 
fun reveal_bounds Ts = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

869 
subst_atomic (map (fn (j, T) => (Free (concealed_bound_name j, T), Bound j)) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

870 
(0 upto length Ts  1 ~~ Ts)) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

871 

42747
f132d13fcf75
use the same code for extensionalization in Metis and Sledgehammer and generalize that code so that it gracefully handles negations (e.g. negated conjecture), formulas of the form (%x. t) = u, etc.
blanchet
parents:
42742
diff
changeset

872 
fun extensionalize_term ctxt t = 
f132d13fcf75
use the same code for extensionalization in Metis and Sledgehammer and generalize that code so that it gracefully handles negations (e.g. negated conjecture), formulas of the form (%x. t) = u, etc.
blanchet
parents:
42742
diff
changeset

873 
let val thy = Proof_Context.theory_of ctxt in 
f132d13fcf75
use the same code for extensionalization in Metis and Sledgehammer and generalize that code so that it gracefully handles negations (e.g. negated conjecture), formulas of the form (%x. t) = u, etc.
blanchet
parents:
42742
diff
changeset

874 
t > cterm_of thy > Meson.extensionalize_conv ctxt 
f132d13fcf75
use the same code for extensionalization in Metis and Sledgehammer and generalize that code so that it gracefully handles negations (e.g. negated conjecture), formulas of the form (%x. t) = u, etc.
blanchet
parents:
42742
diff
changeset

875 
> prop_of > Logic.dest_equals > snd 
f132d13fcf75
use the same code for extensionalization in Metis and Sledgehammer and generalize that code so that it gracefully handles negations (e.g. negated conjecture), formulas of the form (%x. t) = u, etc.
blanchet
parents:
42742
diff
changeset

876 
end 
38608
01ed56c46259
beta eta contract the Sledgehammer conjecture (and also the axioms, although this might not be needed), just like Metis does (implicitly);
blanchet
parents:
38606
diff
changeset

877 

38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

878 
fun introduce_combinators_in_term ctxt kind t = 
42361  879 
let val thy = Proof_Context.theory_of ctxt in 
38491
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

880 
if Meson.is_fol_term thy t then 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

881 
t 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

882 
else 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

883 
let 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

884 
fun aux Ts t = 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

885 
case t of 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

886 
@{const Not} $ t1 => @{const Not} $ aux Ts t1 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

887 
 (t0 as Const (@{const_name All}, _)) $ Abs (s, T, t') => 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

888 
t0 $ Abs (s, T, aux (T :: Ts) t') 
38652
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

889 
 (t0 as Const (@{const_name All}, _)) $ t1 => 
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

890 
aux Ts (t0 $ eta_expand Ts t1 1) 
38491
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

891 
 (t0 as Const (@{const_name Ex}, _)) $ Abs (s, T, t') => 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

892 
t0 $ Abs (s, T, aux (T :: Ts) t') 
38652
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

893 
 (t0 as Const (@{const_name Ex}, _)) $ t1 => 
e063be321438
perform etaexpansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38618
diff
changeset

894 
aux Ts (t0 $ eta_expand Ts t1 1) 
38795
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

895 
 (t0 as @{const HOL.conj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
848be46708dc
formerly unnamed infix conjunction and disjunction now named HOL.conj and HOL.disj
haftmann
parents:
38786
diff
changeset

896 
 (t0 as @{const HOL.disj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
38786
e46e7a9cb622
formerly unnamed infix impliciation now named HOL.implies
haftmann
parents:
38752
diff
changeset

897 
 (t0 as @{const HOL.implies}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2 
38864
4abe644fcea5
formerly unnamed infix equality now named HOL.eq
haftmann
parents:
38829
diff
changeset

898 
 (t0 as Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _]))) 
38491
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

899 
$ t1 $ t2 => 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

900 
t0 $ aux Ts t1 $ aux Ts t2 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

901 
 _ => if not (exists_subterm (fn Abs _ => true  _ => false) t) then 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

902 
t 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

903 
else 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

904 
t > conceal_bounds Ts 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

905 
> Envir.eta_contract 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

906 
> cterm_of thy 
39890  907 
> Meson_Clausify.introduce_combinators_in_cterm 
38491
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

908 
> prop_of > Logic.dest_equals > snd 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

909 
> reveal_bounds Ts 
39370
f8292d3020db
use same hack as in "Async_Manager" to work around Proof General bug
blanchet
parents:
39005
diff
changeset

910 
val (t, ctxt') = Variable.import_terms true [t] ctxt >> the_single 
38491
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

911 
in t > aux [] > singleton (Variable.export_terms ctxt' ctxt) end 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

912 
handle THM _ => 
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

913 
(* A type variable of sort "{}" will make abstraction fail. *) 
38613
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

914 
if kind = Conjecture then HOLogic.false_const 
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

915 
else HOLogic.true_const 
38491
f7e51d981a9f
invoke Variable.export/import_term on the entire formula, to make sure that schematic variables don't get different indices in different subterms;
blanchet
parents:
38282
diff
changeset

916 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

917 

319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

918 
(* Metis's use of "resolve_tac" freezes the schematic variables. We simulate the 
42353
7797efa897a1
correctly handle TFrees that occur in (local) facts  Metis did the right thing here but Sledgehammer was incorrectly generating spurious preconditions such as "dense_linorder(t_a)"
blanchet
parents:
42237
diff
changeset

919 
same in Sledgehammer to prevent the discovery of unreplayable proofs. *) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

920 
fun freeze_term t = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

921 
let 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

922 
fun aux (t $ u) = aux t $ aux u 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

923 
 aux (Abs (s, T, t)) = Abs (s, T, aux t) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

924 
 aux (Var ((s, i), T)) = 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

925 
Free (sledgehammer_weak_prefix ^ s ^ "_" ^ string_of_int i, T) 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

926 
 aux t = t 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

927 
in t > exists_subterm is_Var t ? aux end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

928 

43096  929 
fun preprocess_prop ctxt presimp kind t = 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

930 
let 
42361  931 
val thy = Proof_Context.theory_of ctxt 
38608
01ed56c46259
beta eta contract the Sledgehammer conjecture (and also the axioms, although this might not be needed), just like Metis does (implicitly);
blanchet
parents:
38606
diff
changeset

932 
val t = t > Envir.beta_eta_contract 
42944
9e620869a576
improved Waldmeister support  even run it by default on unit equational goals
blanchet
parents:
42943
diff
changeset

933 
> transform_elim_prop 
41211
1e2e16bc0077
no need to do a superduper atomization if Metis fails afterwards anyway
blanchet
parents:
41199
diff
changeset

934 
> Object_Logic.atomize_term thy 
42563  935 
val need_trueprop = (fastype_of t = @{typ bool}) 
43096  936 
in 
937 
t > need_trueprop ? HOLogic.mk_Trueprop 

938 
> Raw_Simplifier.rewrite_term thy (Meson.unfold_set_const_simps ctxt) [] 

939 
> extensionalize_term ctxt 

940 
> presimp ? presimplify_term ctxt 

43120
a9c2cdf4ae97
make sure "Trueprop" is removed before combinators are added  the code is fragile in that respect
blanchet
parents:
43105
diff
changeset

941 
> perhaps (try (HOLogic.dest_Trueprop)) 
43096  942 
> introduce_combinators_in_term ctxt kind 
943 
end 

944 

945 
(* making fact and conjecture formulas *) 

946 
fun make_formula thy format type_sys eq_as_iff name loc kind t = 

947 
let 

42962
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42956
diff
changeset

948 
val (combformula, atomic_types) = 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

949 
combformula_from_prop thy format type_sys eq_as_iff t [] 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

950 
in 
42640
879d2d6b05ce
generate tags for simps, intros, and elims in TPTP poblems on demand
blanchet
parents:
42613
diff
changeset

951 
{name = name, locality = loc, kind = kind, combformula = combformula, 
42562  952 
atomic_types = atomic_types} 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

953 
end 
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

954 

43096  955 
fun make_fact ctxt format type_sys keep_trivial eq_as_iff preproc presimp 
42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

956 
((name, loc), t) = 
43096  957 
let val thy = Proof_Context.theory_of ctxt in 
958 
case (keep_trivial, 

959 
t > preproc ? preprocess_prop ctxt presimp Axiom 

960 
> make_formula thy format type_sys eq_as_iff name loc Axiom) of 

961 
(false, 

962 
formula as {combformula = AAtom (CombConst ((s, _), _, _)), ...}) => 

963 
if s = tptp_true then NONE else SOME formula 

964 
 (_, formula) => SOME formula 

965 
end 

42561
23ddc4e3d19c
have properly typeinstantiated helper facts (combinators and If)
blanchet
parents:
42560
diff
changeset

966 

43096  967 
fun make_conjecture ctxt format prem_kind type_sys preproc ts = 
968 
let 

969 
val thy = Proof_Context.theory_of ctxt 

970 
val last = length ts  1 

971 
in 

42709
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

972 
map2 (fn j => fn t => 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

973 
let 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

974 
val (kind, maybe_negate) = 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

975 
if j = last then 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

976 
(Conjecture, I) 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

977 
else 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

978 
(prem_kind, 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

979 
if prem_kind = Conjecture then update_combformula mk_anot 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

980 
else I) 
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

981 
in 
43098
e88e974c4846
proper handling of type variable classes in new Metis
blanchet
parents:
43096
diff
changeset

982 
t > preproc ? (preprocess_prop ctxt true kind #> freeze_term) 
43193
e11bd628f1a5
improved ATP clausifier so it can deal with "x => (y <=> z)"
blanchet
parents:
43192
diff
changeset

983 
> make_formula thy format type_sys (format <> CNF) 
e11bd628f1a5
improved ATP clausifier so it can deal with "x => (y <=> z)"
blanchet
parents:
43192
diff
changeset

984 
(string_of_int j) General kind 
42962
3b50fdeb6cfc
started adding support for THF output (but no lambdas)
blanchet
parents:
42956
diff
changeset

985 
> maybe_negate 
42709
e7af132d48fe
allow each prover to specify its own formula kind for symbols occurring in the conjecture
blanchet
parents:
42701
diff
changeset

986 
end) 
38613
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

987 
(0 upto last) ts 
4ca2cae2653f
use "hypothesis" rather than "conjecture" for hypotheses in TPTP format;
blanchet
parents:
38610
diff
changeset

988 
end 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

989 

42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

990 
(** Finite and infinite type inference **) 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

991 

42886
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

992 
fun deep_freeze_atyp (TVar (_, S)) = TFree ("v", S) 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

993 
 deep_freeze_atyp T = T 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

994 
val deep_freeze_type = map_atyps deep_freeze_atyp 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

995 

42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

996 
(* Finite types such as "unit", "bool", "bool * bool", and "bool => bool" are 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

997 
dangerous because their "exhaust" properties can easily lead to unsound ATP 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

998 
proofs. On the other hand, all HOL infinite types can be given the same 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

999 
models in firstorder logic (via LÃ¶wenheimSkolem). *) 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1000 

42886
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1001 
fun should_encode_type ctxt (nonmono_Ts as _ :: _) _ T = 
208ec29cc013
improved "poly_preds_{bang,query}" by picking up good witnesses for the possible infinity of common type classes and ensuring that "?'a::type" doesn't ruin everything
blanchet
parents:
42885
diff
changeset

1002 
exists (curry (type_instance ctxt) (deep_freeze_type T)) nonmono_Ts 
42836  1003 
 should_encode_type _ _ All_Types _ = true 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1004 
 should_encode_type ctxt _ Finite_Types T = is_type_surely_finite ctxt T 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1005 
 should_encode_type _ _ _ _ = false 
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1006 

42837  1007 
fun should_predicate_on_type ctxt nonmono_Ts (Preds (_, level, heaviness)) 
42834
40f7691d0539
implemented thin versions of "preds" type systems + fixed various issues with type args
blanchet
parents:
42832
diff
changeset

1008 
should_predicate_on_var T = 
43128  1009 
(heaviness = Heavyweight orelse should_predicate_on_var ()) andalso 
42878
85ac4c12a4b7
slightly fewer type predicates introduced in the lightweight encoding, based on the observation that only universal positive equalities are dangerous
blanchet
parents:
42855
diff
changeset

1010 
should_encode_type ctxt nonmono_Ts level T 
42834
40f7691d0539
implemented thin versions of "preds" type systems + fixed various issues with type args
blanchet
parents:
42832
diff
changeset

1011 
 should_predicate_on_type _ _ _ _ _ = false 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1012 

42836  1013 
fun is_var_or_bound_var (CombConst ((s, _), _, _)) = 
1014 
String.isPrefix bound_var_prefix s 

1015 
 is_var_or_bound_var (CombVar _) = true 

1016 
 is_var_or_bound_var _ = false 

1017 

42829
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1018 
datatype tag_site = Top_Level  Eq_Arg  Elsewhere 
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1019 

1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1020 
fun should_tag_with_type _ _ _ Top_Level _ _ = false 
42837  1021 
 should_tag_with_type ctxt nonmono_Ts (Tags (_, level, heaviness)) site u T = 
1022 
(case heaviness of 

43128  1023 
Heavyweight => should_encode_type ctxt nonmono_Ts level T 
1024 
 Lightweight => 

42836  1025 
case (site, is_var_or_bound_var u) of 
1026 
(Eq_Arg, true) => should_encode_type ctxt nonmono_Ts level T 

42829
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1027 
 _ => false) 
1558741f8a72
started implementing "shallow" type systems, based on ideas by Claessen et al.
blanchet
parents:
42828
diff
changeset

1028 
 should_tag_with_type _ _ _ _ _ _ = false 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1029 

42994
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1030 
fun homogenized_type ctxt nonmono_Ts level = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1031 
let 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1032 
val should_encode = should_encode_type ctxt nonmono_Ts level 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1033 
fun homo 0 T = if should_encode T then T else homo_infinite_type 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1034 
 homo ary (Type (@{type_name fun}, [T1, T2])) = 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1035 
homo 0 T1 > homo (ary  1) T2 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1036 
 homo _ _ = raise Fail "expected function type" 
fe291ab75eb5
towards supporting nonsimplytyped encodings for TFF and THF (for orthogonality and experiments)
blanchet
parents:
42966
diff
changeset

1037 
in homo end 
42682
562046fd8e0c
added type homogenization, whereby all (isomorphic) infinite types are mapped to the same type (to reduce the number of different predicates/TFFtypes)
blanchet
parents:
42680
diff
changeset

1038 

42573
744215c3e90c
got rid of one "sym_table" in "prepare_atp_problem" now that proxies are always handled first, and tuned accordingly
blanchet
parents:
42572
diff
changeset

1039 
(** "hBOOL" and "hAPP" **) 
41313
a96ac4d180b7
optionally supply constant weights to E  turned off by default until properly parameterized
blanchet
parents:
41211
diff
changeset

1040 

42574  1041 
type sym_info = 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1042 
{pred_sym : bool, min_ary : int, max_ary : int, types : typ list} 
42563  1043 

43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1044 
fun add_combterm_syms_to_table ctxt explicit_apply = 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1045 
let 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1046 
fun consider_var_arity const_T var_T max_ary = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1047 
let 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1048 
fun iter ary T = 
43210
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1049 
if ary = max_ary orelse type_instance ctxt (var_T, T) orelse 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1050 
type_instance ctxt (T, var_T) then 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1051 
ary 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1052 
else 
7384b771805d
made "explicit_apply"'s smart mode (more) complete
blanchet
parents:
43207
diff
changeset

1053 
iter (ary + 1) (range_type T) 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1054 
in iter 0 const_T end 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1055 
fun add_var_or_bound_var T (accum as ((bool_vars, fun_var_Ts), sym_tab)) = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1056 
if explicit_apply = NONE andalso 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1057 
(can dest_funT T orelse T = @{typ bool}) then 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1058 
let 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1059 
val bool_vars' = bool_vars orelse body_type T = @{typ bool} 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1060 
fun repair_min_arity {pred_sym, min_ary, max_ary, types} = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1061 
{pred_sym = pred_sym andalso not bool_vars', 
43213
e1fdd27e0c98
generate less type information in polymorphic case
blanchet
parents:
43210
diff
changeset

1062 
min_ary = fold (fn T' => consider_var_arity T' T) types min_ary, 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1063 
max_ary = max_ary, types = types} 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1064 
val fun_var_Ts' = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1065 
fun_var_Ts > can dest_funT T ? insert_type ctxt I T 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1066 
in 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1067 
if bool_vars' = bool_vars andalso 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1068 
pointer_eq (fun_var_Ts', fun_var_Ts) then 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1069 
accum 
43167
839f599bc7ed
ensured that the logic for "explicit_apply = smart" also works on CNF (i.e. new Metis)
blanchet
parents:
43159
diff
changeset

1070 
else 
43213
e1fdd27e0c98
generate less type information in polymorphic case
blanchet
parents:
43210
diff
changeset

1071 
((bool_vars', fun_var_Ts'), Symtab.map (K repair_min_arity) sym_tab) 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1072 
end 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1073 
else 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1074 
accum 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1075 
fun add top_level tm (accum as ((bool_vars, fun_var_Ts), sym_tab)) = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1076 
let val (head, args) = strip_combterm_comb tm in 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1077 
(case head of 
42563  1078 
CombConst ((s, _), T, _) => 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1079 
if String.isPrefix bound_var_prefix s then 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1080 
add_var_or_bound_var T accum 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1081 
else 
43139
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
43136
diff
changeset

1082 
let val ary = length args in 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1083 
((bool_vars, fun_var_Ts), 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1084 
case Symtab.lookup sym_tab s of 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1085 
SOME {pred_sym, min_ary, max_ary, types} => 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1086 
let 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1087 
val pred_sym = 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1088 
pred_sym andalso top_level andalso not bool_vars 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1089 
val types' = types > insert_type ctxt I T 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1090 
val min_ary = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1091 
if is_some explicit_apply orelse 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1092 
pointer_eq (types', types) then 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1093 
min_ary 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1094 
else 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1095 
fold (consider_var_arity T) fun_var_Ts min_ary 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1096 
in 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1097 
Symtab.update (s, {pred_sym = pred_sym, 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1098 
min_ary = Int.min (ary, min_ary), 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1099 
max_ary = Int.max (ary, max_ary), 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1100 
types = types'}) 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1101 
sym_tab 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1102 
end 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1103 
 NONE => 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1104 
let 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1105 
val pred_sym = top_level andalso not bool_vars 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1106 
val min_ary = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1107 
case explicit_apply of 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1108 
SOME true => 0 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1109 
 SOME false => ary 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1110 
 NONE => fold (consider_var_arity T) fun_var_Ts ary 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1111 
in 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1112 
Symtab.update_new (s, {pred_sym = pred_sym, 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1113 
min_ary = min_ary, max_ary = ary, 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1114 
types = [T]}) 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1115 
sym_tab 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
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parents:
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diff
changeset

1116 
end) 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
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parents:
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diff
changeset

1117 
end 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1118 
 CombVar (_, T) => add_var_or_bound_var T accum 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
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parents:
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diff
changeset

1119 
 _ => accum) 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
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diff
changeset

1120 
> fold (add false) args 
42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
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diff
changeset

1121 
end 
43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1122 
in add true end 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
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diff
changeset

1123 
fun add_fact_syms_to_table ctxt explicit_apply = 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1124 
fact_lift (formula_fold NONE 
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
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parents:
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diff
changeset

1125 
(K (add_combterm_syms_to_table ctxt explicit_apply))) 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

1126 

43139
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
43136
diff
changeset

1127 
val default_sym_tab_entries : (string * sym_info) list = 
43174  1128 
(prefixed_predicator_name, 
43139
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
43136
diff
changeset

1129 
{pred_sym = true, min_ary = 1, max_ary = 1, types = []}) :: 
42568
7b9801a34836
no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents:
42566
diff
changeset

1130 
([tptp_false, tptp_true] 
43139
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
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diff
changeset

1131 
> map (rpair {pred_sym = true, min_ary = 0, max_ary = 0, types = []})) @ 
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
43136
diff
changeset

1132 
([tptp_equal, tptp_old_equal] 
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
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diff
changeset

1133 
> map (rpair {pred_sym = true, min_ary = 2, max_ary = 2, types = []})) 
41140
9c68004b8c9d
added Sledgehammer support for higherorder propositional reasoning
blanchet
parents:
41138
diff
changeset

1134 

43064
b6e61d22fa61
made "explicit_apply" smarter  no need to force explicit applications in minimizer on all constants, better do it more fine granularly
blanchet
parents:
43039
diff
changeset

1135 
fun sym_table_for_facts ctxt explicit_apply facts = 
43201
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1136 
((false, []), Symtab.empty) 
0c9bf1a8e0d8
make "smart" mode of "explicit_apply" smarter, by also detecting the other kind of higherorder quantification, namely "bool"s
blanchet
parents:
43198
diff
changeset

1137 
> fold (add_fact_syms_to_table ctxt explicit_apply) facts > snd 
43139
9ed5d8ad8fa0
fixed debilitating translation bug introduced in b6e61d22fa61  "equal" and "=" should always have arity 2
blanchet
parents:
43136
diff
changeset

1138 
> fold Symtab.update default_sym_tab_entries 
38282
319c59682c51
move Sledgehammer's HOL > FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff
changeset

1139 

42558
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1140 
fun min_arity_of sym_tab s = 
3d9930cb6770
cleaned up "explicit_apply" so that it shares most of its code path with the default mode of operation
blanchet
parents:
42557
diff
changeset

1141 
case Symtab.lookup sym_tab s of 
42574 