src/HOL/Tools/Sledgehammer/sledgehammer_atp_translate.ML
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(*  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 SLEDGEHAMMER_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 'a problem = 'a ATP_Problem.problem
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  type translated_formula
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  datatype type_system =
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    Many_Typed |
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    Mangled of bool |
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    Args of bool |
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    Tags of bool |
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    No_Types
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  val readable_names : bool Unsynchronized.ref
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  val fact_prefix : string
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  val conjecture_prefix : string
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  val predicator_base : string
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  val explicit_app_base : string
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  val type_pred_base : string
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  val tff_type_prefix : string
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  val is_type_system_sound : type_system -> bool
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  val type_system_types_dangerous_types : type_system -> bool
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  val num_atp_type_args : theory -> type_system -> string -> int
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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 -> bool -> (string * 'a) * thm
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    -> translated_formula option * ((string * 'a) * thm)
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  val prepare_atp_problem :
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    Proof.context -> type_system -> 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
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  val atp_problem_weights : string problem -> (string * real) list
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end;
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structure Sledgehammer_ATP_Translate : SLEDGEHAMMER_ATP_TRANSLATE =
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struct
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open ATP_Problem
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open Metis_Translate
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open Sledgehammer_Util
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(* Readable names are often much shorter, especially if types are mangled in
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   names. For that reason, they are on by default. *)
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val readable_names = Unsynchronized.ref true
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val type_decl_prefix = "type_"
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val sym_decl_prefix = "sym_"
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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 = "crel_";
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val arity_clause_prefix = "arity_"
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val tfree_prefix = "tfree_"
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val predicator_base = "hBOOL"
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val explicit_app_base = "hAPP"
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val type_pred_base = "is"
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val tff_type_prefix = "ty_"
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fun make_tff_type s = tff_type_prefix ^ ascii_of s
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(* official TPTP syntax *)
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val tptp_tff_type_of_types = "$tType"
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val tptp_tff_bool_type = "$o"
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val tptp_false = "$false"
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val tptp_true = "$true"
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(* Freshness almost guaranteed! *)
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val sledgehammer_weak_prefix = "Sledgehammer:"
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type translated_formula =
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  {name: string,
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   kind: formula_kind,
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   combformula: (name, typ, combterm) formula,
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   atomic_types: typ list}
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fun update_combformula f
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        ({name, kind, combformula, atomic_types} : translated_formula) =
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  {name = name, kind = kind, combformula = f combformula,
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   atomic_types = atomic_types} : translated_formula
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fun fact_lift f ({combformula, ...} : translated_formula) = f combformula
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datatype type_system =
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  Many_Typed |
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  Mangled of bool |
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  Args of bool |
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  Tags of bool |
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  No_Types
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fun is_type_system_sound Many_Typed = true
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  | is_type_system_sound (Mangled full_types) = full_types
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  | is_type_system_sound (Args full_types) = full_types
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  | is_type_system_sound (Tags full_types) = full_types
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  | is_type_system_sound No_Types = false
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fun type_system_types_dangerous_types (Tags _) = true
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  | type_system_types_dangerous_types type_sys = is_type_system_sound type_sys
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fun dont_need_type_args type_sys s =
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  s <> type_pred_base andalso
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  (member (op =) [@{const_name HOL.eq}] s orelse
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   case type_sys of
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     Many_Typed => false
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   | Mangled _ => false
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   | Args _ => s = explicit_app_base
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   | Tags full_types => full_types orelse s = explicit_app_base
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   | No_Types => true)
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datatype type_arg_policy = No_Type_Args | Mangled_Types | Explicit_Type_Args
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fun general_type_arg_policy Many_Typed = Mangled_Types
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  | general_type_arg_policy (Mangled _) = Mangled_Types
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  | general_type_arg_policy _ = Explicit_Type_Args
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fun type_arg_policy type_sys s =
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  if dont_need_type_args type_sys s then No_Type_Args
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  else general_type_arg_policy type_sys
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fun num_atp_type_args thy type_sys s =
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  if type_arg_policy type_sys s = Explicit_Type_Args then num_type_args thy s
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  else 0
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fun atp_type_literals_for_types type_sys kind Ts =
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  if type_sys = No_Types then
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    []
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  else
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    Ts |> type_literals_for_types
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       |> filter (fn TyLitVar _ => kind <> Conjecture
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                   | TyLitFree _ => kind = Conjecture)
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fun mk_anot phi = AConn (ANot, [phi])
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fun mk_aconn c phi1 phi2 = AConn (c, [phi1, phi2])
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fun mk_aconns c phis =
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  let val (phis', phi') = split_last phis in
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    fold_rev (mk_aconn c) phis' phi'
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  end
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fun mk_ahorn [] phi = phi
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  | mk_ahorn phis psi = AConn (AImplies, [mk_aconns AAnd phis, psi])
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fun mk_aquant _ [] phi = phi
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  | mk_aquant q xs (phi as AQuant (q', xs', phi')) =
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    if q = q' then AQuant (q, xs @ xs', phi') else AQuant (q, xs, phi)
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  | mk_aquant q xs phi = AQuant (q, xs, phi)
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fun close_universally atom_vars phi =
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  let
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    fun formula_vars bounds (AQuant (_, xs, phi)) =
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        formula_vars (map fst xs @ bounds) phi
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      | formula_vars bounds (AConn (_, phis)) = fold (formula_vars bounds) phis
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      | formula_vars bounds (AAtom tm) =
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        union (op =) (atom_vars tm []
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                      |> filter_out (member (op =) bounds o fst))
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  in mk_aquant AForall (formula_vars [] phi []) phi end
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fun combterm_vars (CombApp (tm1, tm2)) = fold combterm_vars [tm1, tm2]
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  | combterm_vars (CombConst _) = I
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  | combterm_vars (CombVar (name, ty)) = insert (op =) (name, SOME ty)
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val close_combformula_universally = close_universally combterm_vars
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fun term_vars (ATerm (name as (s, _), tms)) =
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  is_atp_variable s ? insert (op =) (name, NONE)
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  #> fold term_vars tms
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val close_formula_universally = close_universally term_vars
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fun fo_term_from_typ (Type (s, Ts)) =
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    ATerm (`make_fixed_type_const s, map fo_term_from_typ Ts)
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  | fo_term_from_typ (TFree (s, _)) =
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    ATerm (`make_fixed_type_var s, [])
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  | fo_term_from_typ (TVar ((x as (s, _)), _)) =
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    ATerm ((make_schematic_type_var x, s), [])
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(* This shouldn't clash with anything else. *)
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val mangled_type_sep = "\000"
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fun generic_mangled_type_name f (ATerm (name, [])) = f name
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  | generic_mangled_type_name f (ATerm (name, tys)) =
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    f name ^ "(" ^ commas (map (generic_mangled_type_name f) tys) ^ ")"
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val mangled_type_name =
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  fo_term_from_typ
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  #> (fn ty => (make_tff_type (generic_mangled_type_name fst ty),
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                generic_mangled_type_name snd ty))
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fun generic_mangled_type_suffix f g tys =
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  fold_rev (curry (op ^) o g o prefix mangled_type_sep
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            o generic_mangled_type_name f) tys ""
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fun mangled_const_name T_args (s, s') =
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  let val ty_args = map fo_term_from_typ T_args in
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    (s ^ generic_mangled_type_suffix fst ascii_of ty_args,
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     s' ^ generic_mangled_type_suffix snd I ty_args)
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  end
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val parse_mangled_ident =
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  Scan.many1 (not o member (op =) ["(", ")", ","]) >> implode
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fun parse_mangled_type x =
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  (parse_mangled_ident
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   -- Scan.optional ($$ "(" |-- Scan.optional parse_mangled_types [] --| $$ ")")
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                    [] >> ATerm) x
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and parse_mangled_types x =
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  (parse_mangled_type ::: Scan.repeat ($$ "," |-- parse_mangled_type)) x
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fun unmangled_type s =
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  s |> suffix ")" |> raw_explode
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    |> Scan.finite Symbol.stopper
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           (Scan.error (!! (fn _ => raise Fail ("unrecognized mangled type " ^
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                                                quote s)) parse_mangled_type))
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    |> fst
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val unmangled_const_name = space_explode mangled_type_sep #> hd
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fun unmangled_const s =
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  let val ss = space_explode mangled_type_sep s in
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    (hd ss, map unmangled_type (tl ss))
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  end
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val introduce_proxies =
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  let
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    fun aux top_level (CombApp (tm1, tm2)) =
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        CombApp (aux top_level tm1, aux false tm2)
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      | aux top_level (CombConst (name as (s, s'), ty, ty_args)) =
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        (case AList.lookup (op =) metis_proxies s of
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           SOME proxy_base =>
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           if top_level then
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             (case s of
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                "c_False" => (tptp_false, s')
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              | "c_True" => (tptp_true, s')
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              | _ => name, [])
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            else
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              (proxy_base |>> prefix const_prefix, ty_args)
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          | NONE => (name, ty_args))
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        |> (fn (name, ty_args) => CombConst (name, ty, ty_args))
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      | aux _ tm = tm
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  in aux true end
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fun combformula_from_prop thy eq_as_iff =
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  let
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    fun do_term bs t atomic_types =
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      combterm_from_term thy bs (Envir.eta_contract t)
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      |>> (introduce_proxies #> AAtom)
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      ||> union (op =) atomic_types
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    fun do_quant bs q s T t' =
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      let val s = Name.variant (map fst bs) s in
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        do_formula ((s, T) :: bs) t'
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        #>> mk_aquant q [(`make_bound_var s, SOME T)]
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      end
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    and do_conn bs c t1 t2 =
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      do_formula bs t1 ##>> do_formula bs t2
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      #>> uncurry (mk_aconn c)
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    and do_formula bs t =
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      case t of
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        @{const Not} $ t1 => do_formula bs t1 #>> mk_anot
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      | Const (@{const_name All}, _) $ Abs (s, T, t') =>
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        do_quant bs AForall s T t'
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      | Const (@{const_name Ex}, _) $ Abs (s, T, t') =>
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        do_quant bs AExists s T t'
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      | @{const HOL.conj} $ t1 $ t2 => do_conn bs AAnd t1 t2
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      | @{const HOL.disj} $ t1 $ t2 => do_conn bs AOr t1 t2
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      | @{const HOL.implies} $ t1 $ t2 => do_conn bs AImplies t1 t2
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      | Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _])) $ t1 $ t2 =>
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        if eq_as_iff then do_conn bs AIff t1 t2 else do_term bs t
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      | _ => do_term bs t
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  in do_formula [] end
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val presimplify_term = prop_of o Meson.presimplify oo Skip_Proof.make_thm
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fun concealed_bound_name j = sledgehammer_weak_prefix ^ string_of_int j
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fun conceal_bounds Ts t =
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  subst_bounds (map (Free o apfst concealed_bound_name)
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                    (0 upto length Ts - 1 ~~ Ts), t)
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fun reveal_bounds Ts =
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  subst_atomic (map (fn (j, T) => (Free (concealed_bound_name j, T), Bound j))
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                    (0 upto length Ts - 1 ~~ Ts))
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(* Removes the lambdas from an equation of the form "t = (%x. u)".
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   (Cf. "extensionalize_theorem" in "Meson_Clausify".) *)
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fun extensionalize_term t =
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  let
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    fun aux j (@{const Trueprop} $ t') = @{const Trueprop} $ aux j t'
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      | aux j (t as Const (s, Type (_, [Type (_, [_, T']),
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                                        Type (_, [_, res_T])]))
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                    $ t2 $ Abs (var_s, var_T, t')) =
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        if s = @{const_name HOL.eq} orelse s = @{const_name "=="} then
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          let val var_t = Var ((var_s, j), var_T) in
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            Const (s, T' --> T' --> res_T)
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              $ betapply (t2, var_t) $ subst_bound (var_t, t')
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            |> aux (j + 1)
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          end
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        else
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          t
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      | aux _ t = t
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  in aux (maxidx_of_term t + 1) t end
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fun introduce_combinators_in_term ctxt kind t =
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  let val thy = Proof_Context.theory_of ctxt in
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    if Meson.is_fol_term thy t then
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      t
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    else
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      let
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        fun aux Ts t =
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          case t of
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            @{const Not} $ t1 => @{const Not} $ aux Ts t1
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          | (t0 as Const (@{const_name All}, _)) $ Abs (s, T, t') =>
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            t0 $ Abs (s, T, aux (T :: Ts) t')
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          | (t0 as Const (@{const_name All}, _)) $ t1 =>
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            aux Ts (t0 $ eta_expand Ts t1 1)
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          | (t0 as Const (@{const_name Ex}, _)) $ Abs (s, T, t') =>
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            t0 $ Abs (s, T, aux (T :: Ts) t')
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          | (t0 as Const (@{const_name Ex}, _)) $ t1 =>
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            aux Ts (t0 $ eta_expand Ts t1 1)
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          | (t0 as @{const HOL.conj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
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          | (t0 as @{const HOL.disj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
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          | (t0 as @{const HOL.implies}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
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   321
          | (t0 as Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _])))
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              $ t1 $ t2 =>
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   323
            t0 $ aux Ts t1 $ aux Ts t2
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   324
          | _ => if not (exists_subterm (fn Abs _ => true | _ => false) t) then
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   325
                   t
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   326
                 else
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                   t |> conceal_bounds Ts
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                     |> Envir.eta_contract
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   329
                     |> cterm_of thy
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   330
                     |> Meson_Clausify.introduce_combinators_in_cterm
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   331
                     |> prop_of |> Logic.dest_equals |> snd
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   332
                     |> reveal_bounds Ts
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f8292d3020db use same hack as in "Async_Manager" to work around Proof General bug
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   333
        val (t, ctxt') = Variable.import_terms true [t] ctxt |>> the_single
38491
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   334
      in t |> aux [] |> singleton (Variable.export_terms ctxt' ctxt) end
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   335
      handle THM _ =>
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   336
             (* A type variable of sort "{}" will make abstraction fail. *)
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             if kind = Conjecture then HOLogic.false_const
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             else HOLogic.true_const
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   339
  end
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319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   341
(* Metis's use of "resolve_tac" freezes the schematic variables. We simulate the
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   same in Sledgehammer to prevent the discovery of unreplayable proofs. *)
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   343
fun freeze_term t =
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   344
  let
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    fun aux (t $ u) = aux t $ aux u
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      | aux (Abs (s, T, t)) = Abs (s, T, aux t)
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      | aux (Var ((s, i), T)) =
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   348
        Free (sledgehammer_weak_prefix ^ s ^ "_" ^ string_of_int i, T)
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   349
      | aux t = t
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  in t |> exists_subterm is_Var t ? aux end
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da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
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(* making fact and conjecture formulas *)
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   353
fun make_formula ctxt eq_as_iff presimp name kind t =
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   354
  let
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   355
    val thy = Proof_Context.theory_of ctxt
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   356
    val t = t |> Envir.beta_eta_contract
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              |> transform_elim_term
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   358
              |> Object_Logic.atomize_term thy
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   359
    val need_trueprop = (fastype_of t = @{typ bool})
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   360
    val t = t |> need_trueprop ? HOLogic.mk_Trueprop
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   361
              |> extensionalize_term
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   362
              |> presimp ? presimplify_term thy
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   363
              |> perhaps (try (HOLogic.dest_Trueprop))
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              |> introduce_combinators_in_term ctxt kind
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              |> kind <> Axiom ? freeze_term
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   366
    val (combformula, atomic_types) =
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   367
      combformula_from_prop thy eq_as_iff t []
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   368
  in
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6628adcae4a7 consider "locality" when assigning weights to facts
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   369
    {name = name, combformula = combformula, kind = kind,
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   370
     atomic_types = atomic_types}
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   371
  end
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   372
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23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   373
fun make_fact ctxt keep_trivial eq_as_iff presimp ((name, _), t) =
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  case (keep_trivial, make_formula ctxt eq_as_iff presimp name Axiom t) of
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    (false, {combformula = AAtom (CombConst (("c_True", _), _, _)), ...}) =>
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    NONE
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  | (_, formula) => SOME formula
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   378
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   379
fun make_conjecture ctxt ts =
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   380
  let val last = length ts - 1 in
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   381
    map2 (fn j => make_formula ctxt true true (string_of_int j)
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   382
                               (if j = last then Conjecture else Hypothesis))
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   383
         (0 upto last) ts
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   384
  end
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   385
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   386
(** Helper facts **)
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   388
fun formula_map f (AQuant (q, xs, phi)) = AQuant (q, xs, formula_map f phi)
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   389
  | formula_map f (AConn (c, phis)) = AConn (c, map (formula_map f) phis)
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   390
  | formula_map f (AAtom tm) = AAtom (f tm)
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   391
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
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   392
fun formula_fold f (AQuant (_, _, phi)) = formula_fold f phi
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   393
  | formula_fold f (AConn (_, phis)) = fold (formula_fold f) phis
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   394
  | formula_fold f (AAtom tm) = f tm
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   395
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   396
type sym_table_info =
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   397
  {pred_sym : bool, min_ary : int, max_ary : int, typ : typ option}
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diff changeset
   398
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   399
fun ti_ti_helper_fact () =
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319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   400
  let
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   401
    fun var s = ATerm (`I s, [])
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   402
    fun tag tm = ATerm (`I type_tag_name, [var "X", tm])
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319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   403
  in
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23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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diff changeset
   404
    Formula (Fof, helper_prefix ^ ascii_of "ti_ti", Axiom,
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   405
             AAtom (ATerm (`I "equal", [tag (tag (var "Y")), tag (var "Y")]))
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   406
             |> close_formula_universally, NONE, NONE)
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319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   407
  end
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   408
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   409
fun helper_facts_for_sym ctxt type_sys (s, {typ, ...} : sym_table_info) =
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   410
  case strip_prefix_and_unascii const_prefix s of
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   411
    SOME mangled_s =>
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   412
    let
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   413
      val thy = Proof_Context.theory_of ctxt
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   414
      val unmangled_s = mangled_s |> unmangled_const_name
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   415
      fun dub_and_inst c needs_full_types (th, j) =
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   416
        ((c ^ "_" ^ string_of_int j ^ (if needs_full_types then "ft" else ""),
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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diff changeset
   417
          false),
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   418
         let val t = th |> prop_of in
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   419
           t |> (general_type_arg_policy type_sys = Mangled_Types andalso
299d4266a9f9 avoid Type.TYPE_MATCH exception for "True_or_False" for "If"
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   420
                 not (null (Term.hidden_polymorphism t)))
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   421
                ? (case typ of
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   422
                     SOME T =>
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   423
                     specialize_type thy (safe_invert_const unmangled_s, T)
299d4266a9f9 avoid Type.TYPE_MATCH exception for "True_or_False" for "If"
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   424
                   | NONE => I)
299d4266a9f9 avoid Type.TYPE_MATCH exception for "True_or_False" for "If"
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   425
         end)
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23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   426
      fun make_facts eq_as_iff =
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   427
        map_filter (make_fact ctxt false eq_as_iff false)
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diff changeset
   428
    in
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   429
      metis_helpers
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   430
      |> maps (fn (metis_s, (needs_full_types, ths)) =>
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   431
                  if metis_s <> unmangled_s orelse
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   432
                     (needs_full_types andalso
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   433
                      not (type_system_types_dangerous_types type_sys)) then
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   434
                    []
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   435
                  else
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   436
                    ths ~~ (1 upto length ths)
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   437
                    |> map (dub_and_inst mangled_s needs_full_types)
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   438
                    |> make_facts (not needs_full_types))
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   439
    end
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   440
  | NONE => []
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   441
fun helper_facts_for_sym_table ctxt type_sys sym_tab =
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   442
  Symtab.fold_rev (append o helper_facts_for_sym ctxt type_sys) sym_tab []
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   443
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
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   444
fun translate_atp_fact ctxt keep_trivial =
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   445
  `(make_fact ctxt keep_trivial true true o apsnd prop_of)
39004
f1b465f889b5 translate the axioms to FOF once and for all ATPs
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diff changeset
   446
41134
de9e0adc21da added "type_sys" option to Sledgehammer
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diff changeset
   447
fun translate_formulas ctxt type_sys hyp_ts concl_t rich_facts =
38282
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   448
  let
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23f352990944 modernized structure Proof_Context;
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   449
    val thy = Proof_Context.theory_of ctxt
41091
0afdf5cde874 implicitly call the minimizer for SMT solvers that don't return an unsat core
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   450
    val fact_ts = map (prop_of o snd o snd) rich_facts
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   451
    val (facts, fact_names) =
0afdf5cde874 implicitly call the minimizer for SMT solvers that don't return an unsat core
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   452
      rich_facts
0afdf5cde874 implicitly call the minimizer for SMT solvers that don't return an unsat core
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   453
      |> map_filter (fn (NONE, _) => NONE
0afdf5cde874 implicitly call the minimizer for SMT solvers that don't return an unsat core
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   454
                      | (SOME fact, (name, _)) => SOME (fact, name))
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   455
      |> ListPair.unzip
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
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   456
    (* Remove existing facts from the conjecture, as this can dramatically
39005
42fcb25de082 minor refactoring
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   457
       boost an ATP's performance (for some reason). *)
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
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   458
    val hyp_ts = hyp_ts |> filter_out (member (op aconv) fact_ts)
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319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   459
    val goal_t = Logic.list_implies (hyp_ts, concl_t)
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)"
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diff changeset
   460
    val all_ts = goal_t :: fact_ts
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)"
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   461
    val subs = tfree_classes_of_terms all_ts
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)"
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   462
    val supers = tvar_classes_of_terms all_ts
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)"
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diff changeset
   463
    val tycons = type_consts_of_terms thy all_ts
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
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   464
    val conjs = make_conjecture ctxt (hyp_ts @ [concl_t])
41137
8b634031b2a5 implemented "no_types" encoding, which is too unsound to be useful but can come in handy for evaluations
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   465
    val (supers', arity_clauses) =
8b634031b2a5 implemented "no_types" encoding, which is too unsound to be useful but can come in handy for evaluations
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   466
      if type_sys = No_Types then ([], [])
8b634031b2a5 implemented "no_types" encoding, which is too unsound to be useful but can come in handy for evaluations
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   467
      else make_arity_clauses thy tycons supers
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319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   468
    val class_rel_clauses = make_class_rel_clauses thy subs supers'
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   469
  in
41313
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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   470
    (fact_names |> map single, (conjs, facts, class_rel_clauses, arity_clauses))
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319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   471
  end
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   472
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   473
fun impose_type_arg_policy type_sys =
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   474
  let
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   475
    fun aux (CombApp tmp) = CombApp (pairself aux tmp)
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   476
      | aux (CombConst (name as (s, _), ty, ty_args)) =
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   477
        (case strip_prefix_and_unascii const_prefix s of
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   478
           NONE => (name, ty_args)
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   479
         | SOME s'' =>
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   480
           let val s'' = invert_const s'' in
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   481
             case type_arg_policy type_sys s'' of
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   482
               No_Type_Args => (name, [])
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   483
             | Mangled_Types => (mangled_const_name ty_args name, [])
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   484
             | Explicit_Type_Args => (name, ty_args)
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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diff changeset
   485
           end)
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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   486
        |> (fn (name, ty_args) => CombConst (name, ty, ty_args))
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93f58e6a6f3e proper handling of partially applied proxy symbols
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   487
      | aux tm = tm
93f58e6a6f3e proper handling of partially applied proxy symbols
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diff changeset
   488
  in aux end
93f58e6a6f3e proper handling of partially applied proxy symbols
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diff changeset
   489
val impose_type_arg_policy_on_fact =
93f58e6a6f3e proper handling of partially applied proxy symbols
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diff changeset
   490
  update_combformula o formula_map o impose_type_arg_policy
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
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diff changeset
   491
41138
eb80538166b6 implemented partially-typed "tags" type encoding
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diff changeset
   492
fun tag_with_type ty t = ATerm (`I type_tag_name, [ty, t])
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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parents:
diff changeset
   493
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
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diff changeset
   494
fun fo_literal_from_type_literal (TyLitVar (class, name)) =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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parents:
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   495
    (true, ATerm (class, [ATerm (name, [])]))
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
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   496
  | fo_literal_from_type_literal (TyLitFree (class, name)) =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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   497
    (true, ATerm (class, [ATerm (name, [])]))
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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parents:
diff changeset
   498
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f1d903f789b1 killed needless datatype "combtyp" in Metis
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diff changeset
   499
fun formula_from_fo_literal (pos, t) = AAtom t |> not pos ? mk_anot
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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diff changeset
   500
41138
eb80538166b6 implemented partially-typed "tags" type encoding
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diff changeset
   501
(* Finite types such as "unit", "bool", "bool * bool", and "bool => bool" are
eb80538166b6 implemented partially-typed "tags" type encoding
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diff changeset
   502
   considered dangerous because their "exhaust" properties can easily lead to
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   503
   unsound ATP proofs. The checks below are an (unsound) approximation of
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   504
   finiteness. *)
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   505
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   506
fun is_dtyp_dangerous _ (Datatype_Aux.DtTFree _) = true
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   507
  | is_dtyp_dangerous ctxt (Datatype_Aux.DtType (s, Us)) =
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   508
    is_type_constr_dangerous ctxt s andalso forall (is_dtyp_dangerous ctxt) Us
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   509
  | is_dtyp_dangerous _ (Datatype_Aux.DtRec _) = false
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   510
and is_type_dangerous ctxt (Type (s, Ts)) =
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   511
    is_type_constr_dangerous ctxt s andalso forall (is_type_dangerous ctxt) Ts
41140
9c68004b8c9d added Sledgehammer support for higher-order propositional reasoning
blanchet
parents: 41138
diff changeset
   512
  | is_type_dangerous _ _ = false
41138
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   513
and is_type_constr_dangerous ctxt s =
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42353
diff changeset
   514
  let val thy = Proof_Context.theory_of ctxt in
41138
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   515
    case Datatype_Data.get_info thy s of
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   516
      SOME {descr, ...} =>
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   517
      forall (fn (_, (_, _, constrs)) =>
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   518
                 forall (forall (is_dtyp_dangerous ctxt) o snd) constrs) descr
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   519
    | NONE =>
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   520
      case Typedef.get_info ctxt s of
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   521
        ({rep_type, ...}, _) :: _ => is_type_dangerous ctxt rep_type
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   522
      | [] => true
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   523
  end
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   524
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   525
fun should_tag_with_type ctxt (Tags full_types) T =
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   526
    full_types orelse is_type_dangerous ctxt T
41138
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   527
  | should_tag_with_type _ _ _ = false
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   528
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   529
fun type_pred_combatom type_sys T tm =
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   530
  CombApp (CombConst (`make_fixed_const type_pred_base, T --> @{typ bool}, [T]),
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   531
           tm)
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   532
  |> impose_type_arg_policy type_sys
42534
46e690db16b8 fake type declarations for full-type args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents: 42533
diff changeset
   533
  |> AAtom
46e690db16b8 fake type declarations for full-type args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents: 42533
diff changeset
   534
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   535
fun formula_from_combformula ctxt type_sys =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   536
  let
42556
f65e5f0341b8 fixed "tags" type encoding after latest round of changes
blanchet
parents: 42553
diff changeset
   537
    fun do_term top_level u =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   538
      let
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   539
        val (head, args) = strip_combterm_comb u
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   540
        val (x, ty_args) =
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   541
          case head of
42553
d9963b253ffa fix handling of proxies after recent drastic changes to the type encodings
blanchet
parents: 42551
diff changeset
   542
            CombConst (name, _, ty_args) => (name, ty_args)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   543
          | CombVar (name, _) => (name, [])
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   544
          | CombApp _ => raise Fail "impossible \"CombApp\""
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   545
        val t = ATerm (x, map fo_term_from_typ ty_args @
42556
f65e5f0341b8 fixed "tags" type encoding after latest round of changes
blanchet
parents: 42553
diff changeset
   546
                          map (do_term false) args)
41138
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   547
        val ty = combtyp_of u
42530
f64c546efe8c fixed type of ATP quantifier types (sic)
blanchet
parents: 42529
diff changeset
   548
      in
42556
f65e5f0341b8 fixed "tags" type encoding after latest round of changes
blanchet
parents: 42553
diff changeset
   549
        t |> (if not top_level andalso
f65e5f0341b8 fixed "tags" type encoding after latest round of changes
blanchet
parents: 42553
diff changeset
   550
                 should_tag_with_type ctxt type_sys ty then
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   551
                tag_with_type (fo_term_from_typ ty)
42530
f64c546efe8c fixed type of ATP quantifier types (sic)
blanchet
parents: 42529
diff changeset
   552
              else
f64c546efe8c fixed type of ATP quantifier types (sic)
blanchet
parents: 42529
diff changeset
   553
                I)
f64c546efe8c fixed type of ATP quantifier types (sic)
blanchet
parents: 42529
diff changeset
   554
      end
42531
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   555
    val do_bound_type =
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   556
      if type_sys = Many_Typed then SOME o mangled_type_name else K NONE
42531
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   557
    val do_out_of_bound_type =
42548
ea2a28b1938f make sure the minimizer monomorphizes when it should
blanchet
parents: 42547
diff changeset
   558
      if member (op =) [Mangled true, Args true] type_sys then
42531
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   559
        (fn (s, ty) =>
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
   560
            type_pred_combatom type_sys ty (CombVar (s, ty))
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   561
            |> formula_from_combformula ctxt type_sys |> SOME)
42531
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   562
      else
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   563
        K NONE
42530
f64c546efe8c fixed type of ATP quantifier types (sic)
blanchet
parents: 42529
diff changeset
   564
    fun do_formula (AQuant (q, xs, phi)) =
42531
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   565
        AQuant (q, xs |> map (apsnd (fn NONE => NONE
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   566
                                      | SOME ty => do_bound_type ty)),
42534
46e690db16b8 fake type declarations for full-type args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents: 42533
diff changeset
   567
                (if q = AForall then mk_ahorn else fold_rev (mk_aconn AAnd))
42531
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   568
                    (map_filter
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   569
                         (fn (_, NONE) => NONE
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   570
                           | (s, SOME ty) => do_out_of_bound_type (s, ty)) xs)
a462dbaa584f added more rudimentary type support to Sledgehammer's ATP encoding
blanchet
parents: 42530
diff changeset
   571
                    (do_formula phi))
42530
f64c546efe8c fixed type of ATP quantifier types (sic)
blanchet
parents: 42529
diff changeset
   572
      | do_formula (AConn (c, phis)) = AConn (c, map do_formula phis)
42556
f65e5f0341b8 fixed "tags" type encoding after latest round of changes
blanchet
parents: 42553
diff changeset
   573
      | do_formula (AAtom tm) = AAtom (do_term true tm)
42530
f64c546efe8c fixed type of ATP quantifier types (sic)
blanchet
parents: 42529
diff changeset
   574
  in do_formula end
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   575
41138
eb80538166b6 implemented partially-typed "tags" type encoding
blanchet
parents: 41137
diff changeset
   576
fun formula_for_fact ctxt type_sys
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   577
                     ({combformula, atomic_types, ...} : translated_formula) =
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   578
  mk_ahorn (map (formula_from_fo_literal o fo_literal_from_type_literal)
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   579
                (atp_type_literals_for_types type_sys Axiom atomic_types))
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   580
           (formula_from_combformula ctxt type_sys
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   581
                (close_combformula_universally combformula))
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
   582
  |> close_formula_universally
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   583
42538
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   584
fun logic_for_type_sys Many_Typed = Tff
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   585
  | logic_for_type_sys _ = Fof
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   586
42180
a6c141925a8a added monomorphization option to Sledgehammer ATPs -- this looks promising but is still off by default
blanchet
parents: 41990
diff changeset
   587
(* Each fact is given a unique fact number to avoid name clashes (e.g., because
a6c141925a8a added monomorphization option to Sledgehammer ATPs -- this looks promising but is still off by default
blanchet
parents: 41990
diff changeset
   588
   of monomorphization). The TPTP explicitly forbids name clashes, and some of
a6c141925a8a added monomorphization option to Sledgehammer ATPs -- this looks promising but is still off by default
blanchet
parents: 41990
diff changeset
   589
   the remote provers might care. *)
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   590
fun formula_line_for_fact ctxt prefix type_sys
42180
a6c141925a8a added monomorphization option to Sledgehammer ATPs -- this looks promising but is still off by default
blanchet
parents: 41990
diff changeset
   591
                          (j, formula as {name, kind, ...}) =
42538
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   592
  Formula (logic_for_type_sys type_sys,
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   593
           prefix ^ string_of_int j ^ "_" ^ ascii_of name, kind,
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   594
           formula_for_fact ctxt type_sys formula, NONE, NONE)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   595
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   596
fun formula_line_for_class_rel_clause (ClassRelClause {name, subclass,
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   597
                                                       superclass, ...}) =
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
   598
  let val ty_arg = ATerm (`I "T", []) in
42538
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   599
    Formula (Fof, class_rel_clause_prefix ^ ascii_of name, Axiom,
42527
6a9458524f01 reintroduced constructor for formulas, and automatically detect which logic to use (TFF or FOF) to avoid clutter
blanchet
parents: 42526
diff changeset
   600
             AConn (AImplies, [AAtom (ATerm (subclass, [ty_arg])),
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
   601
                               AAtom (ATerm (superclass, [ty_arg]))])
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
   602
             |> close_formula_universally, NONE, NONE)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   603
  end
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   604
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   605
fun fo_literal_from_arity_literal (TConsLit (c, t, args)) =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   606
    (true, ATerm (c, [ATerm (t, map (fn arg => ATerm (arg, [])) args)]))
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   607
  | fo_literal_from_arity_literal (TVarLit (c, sort)) =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   608
    (false, ATerm (c, [ATerm (sort, [])]))
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   609
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   610
fun formula_line_for_arity_clause (ArityClause {name, conclLit, premLits,
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   611
                                                ...}) =
42538
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   612
  Formula (Fof, arity_clause_prefix ^ ascii_of name, Axiom,
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   613
           mk_ahorn (map (formula_from_fo_literal o apfst not
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   614
                          o fo_literal_from_arity_literal) premLits)
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   615
                    (formula_from_fo_literal
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   616
                         (fo_literal_from_arity_literal conclLit))
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
   617
           |> close_formula_universally, NONE, NONE)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   618
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   619
fun formula_line_for_conjecture ctxt type_sys
40114
blanchet
parents: 40069
diff changeset
   620
        ({name, kind, combformula, ...} : translated_formula) =
42538
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   621
  Formula (logic_for_type_sys type_sys, conjecture_prefix ^ name, kind,
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   622
           formula_from_combformula ctxt type_sys
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   623
                                    (close_combformula_universally combformula)
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
   624
           |> close_formula_universally, NONE, NONE)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   625
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   626
fun free_type_literals type_sys ({atomic_types, ...} : translated_formula) =
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   627
  atomic_types |> atp_type_literals_for_types type_sys Conjecture
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   628
               |> map fo_literal_from_type_literal
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   629
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   630
fun formula_line_for_free_type j lit =
42538
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   631
  Formula (Fof, tfree_prefix ^ string_of_int j, Hypothesis,
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   632
           formula_from_fo_literal lit, NONE, NONE)
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   633
fun formula_lines_for_free_types type_sys facts =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   634
  let
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
   635
    val litss = map (free_type_literals type_sys) facts
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   636
    val lits = fold (union (op =)) litss []
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   637
  in map2 formula_line_for_free_type (0 upto length lits - 1) lits end
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   638
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   639
(** "hBOOL" and "hAPP" **)
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   640
42560
7bb3796a4975 don't destroy sym table entry for special symbols such as "hAPP" if "explicit_apply" is set
blanchet
parents: 42558
diff changeset
   641
fun add_combterm_to_sym_table 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
   642
  let
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
   643
    fun aux top_level tm =
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
   644
      let val (head, args) = strip_combterm_comb tm in
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
   645
        (case head of
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   646
           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
   647
           if String.isPrefix bound_var_prefix s then
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
   648
             I
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
   649
           else
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   650
             let val ary = length args 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
   651
               Symtab.map_default
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
   652
                   (s, {pred_sym = true,
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   653
                        min_ary = if explicit_apply then 0 else ary,
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   654
                        max_ary = 0, typ = SOME T})
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   655
                   (fn {pred_sym, min_ary, max_ary, typ} =>
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
   656
                       {pred_sym = pred_sym andalso top_level,
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   657
                        min_ary = Int.min (ary, min_ary),
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   658
                        max_ary = Int.max (ary, max_ary),
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   659
                        typ = if typ = SOME T then typ else NONE})
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
   660
            end
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
   661
         | _ => I)
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
   662
        #> fold (aux false) args
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
   663
      end
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
   664
  in aux true end
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   665
42560
7bb3796a4975 don't destroy sym table entry for special symbols such as "hAPP" if "explicit_apply" is set
blanchet
parents: 42558
diff changeset
   666
val add_fact_to_sym_table = fact_lift o formula_fold o add_combterm_to_sym_table
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   667
42557
ae0deb39a254 fixed min-arity computation when "explicit_apply" is specified
blanchet
parents: 42556
diff changeset
   668
val default_sym_table_entries =
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   669
  [("equal", {pred_sym = true, min_ary = 2, max_ary = 2, typ = NONE}),
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   670
   (make_fixed_const predicator_base,
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   671
    {pred_sym = true, min_ary = 1, max_ary = 1, typ = NONE})] @
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   672
  ([tptp_false, tptp_true]
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   673
   |> map (rpair {pred_sym = true, min_ary = 0, max_ary = 0, typ = NONE}))
41140
9c68004b8c9d added Sledgehammer support for higher-order propositional reasoning
blanchet
parents: 41138
diff changeset
   674
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   675
fun sym_table_for_facts explicit_apply facts =
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   676
  Symtab.empty |> fold Symtab.default default_sym_table_entries
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   677
               |> fold (add_fact_to_sym_table explicit_apply) facts
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   678
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
   679
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
   680
  case Symtab.lookup sym_tab s of
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   681
    SOME ({min_ary, ...} : sym_table_info) => min_ary
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
   682
  | NONE =>
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
   683
    case strip_prefix_and_unascii const_prefix s of
42547
b5eec0c99528 fixed arity of special constants if "explicit_apply" is set
blanchet
parents: 42546
diff changeset
   684
      SOME s =>
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   685
      let val s = s |> unmangled_const_name |> invert_const in
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   686
        if s = predicator_base then 1
42547
b5eec0c99528 fixed arity of special constants if "explicit_apply" is set
blanchet
parents: 42546
diff changeset
   687
        else if s = explicit_app_base then 2
b5eec0c99528 fixed arity of special constants if "explicit_apply" is set
blanchet
parents: 42546
diff changeset
   688
        else if s = type_pred_base then 1
42557
ae0deb39a254 fixed min-arity computation when "explicit_apply" is specified
blanchet
parents: 42556
diff changeset
   689
        else 0
42547
b5eec0c99528 fixed arity of special constants if "explicit_apply" is set
blanchet
parents: 42546
diff changeset
   690
      end
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   691
    | NONE => 0
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   692
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   693
(* True if the constant ever appears outside of the top-level position in
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   694
   literals, or if it appears with different arities (e.g., because of different
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   695
   type instantiations). If false, the constant always receives all of its
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   696
   arguments and is used as a predicate. *)
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
   697
fun is_pred_sym 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
   698
  case Symtab.lookup sym_tab s of
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   699
    SOME {pred_sym, min_ary, max_ary, ...} => pred_sym andalso min_ary = max_ary
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
   700
  | NONE => false
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   701
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   702
val predicator_combconst =
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   703
  CombConst (`make_fixed_const predicator_base, @{typ "bool => bool"}, [])
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   704
fun predicator tm = CombApp (predicator_combconst, tm)
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
   705
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   706
fun introduce_predicators_in_combterm sym_tab tm =
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
   707
  case strip_combterm_comb tm of
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
   708
    (CombConst ((s, _), _, _), _) =>
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   709
    if is_pred_sym sym_tab s then tm else predicator tm
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   710
  | _ => predicator tm
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
   711
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   712
fun list_app head args = fold (curry (CombApp o swap)) args head
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   713
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   714
fun explicit_app arg head =
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   715
  let
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   716
    val head_T = combtyp_of head
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   717
    val (arg_T, res_T) = dest_funT head_T
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   718
    val explicit_app =
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   719
      CombConst (`make_fixed_const explicit_app_base, head_T --> head_T,
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   720
                 [arg_T, res_T])
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   721
  in list_app explicit_app [head, arg] end
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   722
fun list_explicit_app head args = fold explicit_app args head
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   723
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   724
fun introduce_explicit_apps_in_combterm sym_tab =
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   725
  let
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   726
    fun aux tm =
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   727
      case strip_combterm_comb tm of
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   728
        (head as CombConst ((s, _), _, _), args) =>
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   729
        args |> map aux
42557
ae0deb39a254 fixed min-arity computation when "explicit_apply" is specified
blanchet
parents: 42556
diff changeset
   730
             |> chop (min_arity_of sym_tab s)
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   731
             |>> list_app head
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   732
             |-> list_explicit_app
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   733
      | (head, args) => list_explicit_app head (map aux args)
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   734
  in aux end
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   735
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   736
fun firstorderize_combterm sym_tab =
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   737
  introduce_explicit_apps_in_combterm sym_tab
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   738
  #> introduce_predicators_in_combterm sym_tab
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   739
val firstorderize_fact =
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   740
  update_combformula o formula_map o firstorderize_combterm
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   741
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   742
fun is_const_relevant type_sys sym_tab s =
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
   743
  not (String.isPrefix bound_var_prefix s) andalso s <> "equal" andalso
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   744
  (type_sys = Many_Typed orelse not (is_pred_sym sym_tab s))
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   745
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   746
fun consider_combterm_consts type_sys sym_tab tm =
42533
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   747
  let val (head, args) = strip_combterm_comb tm in
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   748
    (case head of
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   749
       CombConst ((s, s'), ty, ty_args) =>
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   750
       (* FIXME: exploit type subsumption *)
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   751
       is_const_relevant type_sys sym_tab s
42534
46e690db16b8 fake type declarations for full-type args and mangled type encodings, so that type assumptions can be discharged
blanchet
parents: 42533
diff changeset
   752
       ? Symtab.insert_list (op =) (s, (s', ty_args, ty))
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   753
     | _ => I)
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   754
    #> fold (consider_combterm_consts type_sys sym_tab) args
42533
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   755
  end
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   756
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
   757
fun consider_fact_consts type_sys sym_tab =
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
   758
  fact_lift (formula_fold (consider_combterm_consts type_sys sym_tab))
42533
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   759
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   760
(* FIXME: needed? *)
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   761
fun typed_const_table_for_facts type_sys sym_tab facts =
42548
ea2a28b1938f make sure the minimizer monomorphizes when it should
blanchet
parents: 42547
diff changeset
   762
  Symtab.empty |> member (op =) [Many_Typed, Mangled true, Args true] type_sys
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   763
                  ? fold (consider_fact_consts type_sys sym_tab) facts
42533
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   764
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   765
fun strip_and_map_type 0 f T = ([], f T)
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   766
  | strip_and_map_type n f (Type (@{type_name fun}, [dom_T, ran_T])) =
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   767
    strip_and_map_type (n - 1) f ran_T |>> cons (f dom_T)
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   768
  | strip_and_map_type _ _ _ = raise Fail "unexpected non-function"
42533
dc81fe6b7a87 generate TFF type declarations in typed mode
blanchet
parents: 42531
diff changeset
   769
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   770
fun problem_line_for_typed_const ctxt type_sys sym_tab s n j (s', ty_args, T) =
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   771
  let val ary = min_arity_of sym_tab s in
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   772
    if type_sys = Many_Typed then
42564
d40bdf941a9a make the problems a bit lighter by getting rid of bound quantifiers for monomorphized constants, since these always have the same return type
blanchet
parents: 42563
diff changeset
   773
      let val (arg_Ts, res_T) = strip_and_map_type ary mangled_type_name T in
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   774
        Decl (sym_decl_prefix ^ ascii_of s, (s, s'), arg_Ts,
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   775
              (* ### FIXME: put that in typed_const_tab *)
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   776
              if is_pred_sym sym_tab s then `I tptp_tff_bool_type else res_T)
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   777
      end
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   778
    else
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   779
      let
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   780
        val (arg_Ts, res_T) = strip_and_map_type ary I T
42564
d40bdf941a9a make the problems a bit lighter by getting rid of bound quantifiers for monomorphized constants, since these always have the same return type
blanchet
parents: 42563
diff changeset
   781
        val bound_names =
d40bdf941a9a make the problems a bit lighter by getting rid of bound quantifiers for monomorphized constants, since these always have the same return type
blanchet
parents: 42563
diff changeset
   782
          1 upto length arg_Ts |> map (`I o make_bound_var o string_of_int)
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   783
        val bound_tms =
42564
d40bdf941a9a make the problems a bit lighter by getting rid of bound quantifiers for monomorphized constants, since these always have the same return type
blanchet
parents: 42563
diff changeset
   784
          bound_names ~~ arg_Ts |> map (fn (name, T) => CombConst (name, T, []))
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   785
        val bound_Ts = arg_Ts |> map (if n > 1 then SOME else K NONE)
42546
8591fcc56c34 make sure typing fact names are unique (needed e.g. by SNARK)
blanchet
parents: 42545
diff changeset
   786
        val freshener =
8591fcc56c34 make sure typing fact names are unique (needed e.g. by SNARK)
blanchet
parents: 42545
diff changeset
   787
          case type_sys of Args _ => string_of_int j ^ "_" | _ => ""
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   788
      in
42546
8591fcc56c34 make sure typing fact names are unique (needed e.g. by SNARK)
blanchet
parents: 42545
diff changeset
   789
        Formula (Fof, sym_decl_prefix ^ freshener ^ "_" ^ ascii_of s, Axiom,
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   790
                 CombConst ((s, s'), T, ty_args)
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   791
                 |> fold (curry (CombApp o swap)) bound_tms
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   792
                 |> type_pred_combatom type_sys res_T
42564
d40bdf941a9a make the problems a bit lighter by getting rid of bound quantifiers for monomorphized constants, since these always have the same return type
blanchet
parents: 42563
diff changeset
   793
                 |> mk_aquant AForall (bound_names ~~ bound_Ts)
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   794
                 |> formula_from_combformula ctxt type_sys,
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   795
                 NONE, NONE)
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   796
      end
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   797
  end
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   798
fun problem_lines_for_sym_decl ctxt type_sys sym_tab (s, xs) =
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   799
  let val n = length xs in
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   800
    map2 (problem_line_for_typed_const ctxt type_sys sym_tab s n)
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   801
         (0 upto n - 1) xs
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   802
  end
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   803
fun problem_lines_for_sym_decls ctxt type_sys sym_tab typed_const_tab =
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   804
  Symtab.fold_rev (append o problem_lines_for_sym_decl ctxt type_sys sym_tab)
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   805
                  typed_const_tab []
42543
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   806
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   807
fun add_tff_types_in_formula (AQuant (_, xs, phi)) =
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   808
    union (op =) (map_filter snd xs) #> add_tff_types_in_formula phi
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   809
  | add_tff_types_in_formula (AConn (_, phis)) =
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   810
    fold add_tff_types_in_formula phis
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   811
  | add_tff_types_in_formula (AAtom _) = I
42539
f6ba908b8b27 generate typing for "hBOOL" in "Many_Typed" mode + tuning
blanchet
parents: 42538
diff changeset
   812
42562
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   813
fun add_tff_types_in_problem_line (Decl (_, _, arg_Ts, res_T)) =
f1d903f789b1 killed needless datatype "combtyp" in Metis
blanchet
parents: 42561
diff changeset
   814
    union (op =) (res_T :: arg_Ts)
42543
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   815
  | add_tff_types_in_problem_line (Formula (_, _, _, phi, _, _)) =
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   816
    add_tff_types_in_formula phi
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   817
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   818
fun tff_types_in_problem problem =
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   819
  fold (fold add_tff_types_in_problem_line o snd) problem []
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   820
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   821
fun decl_line_for_tff_type (s, s') =
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   822
  Decl (type_decl_prefix ^ ascii_of s, (s, s'), [], `I tptp_tff_type_of_types)
42543
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   823
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   824
val type_declsN = "Types"
42544
75cb06eee990 reimplemented the hAPP introduction code so that it's done earlier, when the types are still available
blanchet
parents: 42543
diff changeset
   825
val sym_declsN = "Symbol types"
41157
blanchet
parents: 41150
diff changeset
   826
val factsN = "Relevant facts"
blanchet
parents: 41150
diff changeset
   827
val class_relsN = "Class relationships"
42543
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   828
val aritiesN = "Arities"
41157
blanchet
parents: 41150
diff changeset
   829
val helpersN = "Helper facts"
blanchet
parents: 41150
diff changeset
   830
val conjsN = "Conjectures"
41313
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   831
val free_typesN = "Type variables"
41157
blanchet
parents: 41150
diff changeset
   832
blanchet
parents: 41150
diff changeset
   833
fun offset_of_heading_in_problem _ [] j = j
blanchet
parents: 41150
diff changeset
   834
  | offset_of_heading_in_problem needle ((heading, lines) :: problem) j =
blanchet
parents: 41150
diff changeset
   835
    if heading = needle then j
blanchet
parents: 41150
diff changeset
   836
    else offset_of_heading_in_problem needle problem (j + length lines)
blanchet
parents: 41150
diff changeset
   837
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   838
fun prepare_atp_problem ctxt type_sys explicit_apply hyp_ts concl_t facts =
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   839
  let
41313
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   840
    val (fact_names, (conjs, facts, class_rel_clauses, arity_clauses)) =
41134
de9e0adc21da added "type_sys" option to Sledgehammer
blanchet
parents: 41091
diff changeset
   841
      translate_formulas ctxt type_sys hyp_ts concl_t facts
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   842
    val sym_tab = conjs @ facts |> sym_table_for_facts explicit_apply
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   843
    val (conjs, facts) =
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   844
      (conjs, facts) |> pairself (map (firstorderize_fact sym_tab))
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   845
    val sym_tab = conjs @ facts |> sym_table_for_facts explicit_apply
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   846
    val (conjs, facts) =
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   847
      (conjs, facts) |> pairself (map (impose_type_arg_policy_on_fact type_sys))
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   848
    val sym_tab' = conjs @ facts |> sym_table_for_facts false
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   849
    val typed_const_tab =
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   850
      conjs @ facts |> typed_const_table_for_facts type_sys sym_tab'
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   851
    val sym_decl_lines =
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   852
      typed_const_tab |> problem_lines_for_sym_decls ctxt type_sys sym_tab'
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   853
    val helpers = helper_facts_for_sym_table ctxt type_sys sym_tab'
42565
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   854
                  |> map (firstorderize_fact sym_tab
93f58e6a6f3e proper handling of partially applied proxy symbols
blanchet
parents: 42564
diff changeset
   855
                          #> impose_type_arg_policy_on_fact type_sys)
42522
413b56894f82 close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents: 42521
diff changeset
   856
    (* Reordering these might confuse the proof reconstruction code or the SPASS
413b56894f82 close ATP formulas universally earlier, so that we can add type predicates
blanchet
parents: 42521
diff changeset
   857
       Flotter hack. *)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   858
    val problem =
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   859
      [(sym_declsN, sym_decl_lines),
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   860
       (factsN, map (formula_line_for_fact ctxt fact_prefix type_sys)
42180
a6c141925a8a added monomorphization option to Sledgehammer ATPs -- this looks promising but is still off by default
blanchet
parents: 41990
diff changeset
   861
                    (0 upto length facts - 1 ~~ facts)),
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   862
       (class_relsN, map formula_line_for_class_rel_clause class_rel_clauses),
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   863
       (aritiesN, map formula_line_for_arity_clause arity_clauses),
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   864
       (helpersN, map (formula_line_for_fact ctxt helper_prefix type_sys)
42563
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   865
                      (0 upto length helpers - 1 ~~ helpers)
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   866
                  |> (if type_sys = Tags false then cons (ti_ti_helper_fact ())
e70ffe3846d0 improve helper type instantiation code
blanchet
parents: 42562
diff changeset
   867
                      else I)),
42545
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   868
       (conjsN, map (formula_line_for_conjecture ctxt type_sys) conjs),
a14b602fb3d5 minor cleanup
blanchet
parents: 42544
diff changeset
   869
       (free_typesN, formula_lines_for_free_types type_sys (facts @ conjs))]
42543
f9d402d144d4 declare TFF types so that SNARK can be used with types
blanchet
parents: 42542
diff changeset
   870
    val problem =
42561
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   871
      problem
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   872
      |> (if type_sys = Many_Typed then
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   873
            cons (type_declsN,
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   874
                  map decl_line_for_tff_type (tff_types_in_problem problem))
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   875
          else
23ddc4e3d19c have properly type-instantiated helper facts (combinators and If)
blanchet
parents: 42560
diff changeset
   876
            I)
42568
7b9801a34836 no needless "fequal" proxies if "explicit_apply" is set + always have readable names
blanchet
parents: 42566
diff changeset
   877
    val (problem, pool) = problem |> nice_atp_problem (!readable_names)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   878
  in
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   879
    (problem,
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   880
     case pool of SOME the_pool => snd the_pool | NONE => Symtab.empty,
42541
8938507b2054 move type declarations to the front, for TFF-compliance
blanchet
parents: 42540
diff changeset
   881
     offset_of_heading_in_problem factsN problem 0,
41157
blanchet
parents: 41150
diff changeset
   882
     offset_of_heading_in_problem conjsN problem 0,
blanchet
parents: 41150
diff changeset
   883
     fact_names |> Vector.fromList)
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   884
  end
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   885
41313
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   886
(* FUDGE *)
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   887
val conj_weight = 0.0
41770
a710e96583d5 adjust fudge factors
blanchet
parents: 41769
diff changeset
   888
val hyp_weight = 0.1
a710e96583d5 adjust fudge factors
blanchet
parents: 41769
diff changeset
   889
val fact_min_weight = 0.2
41313
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   890
val fact_max_weight = 1.0
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   891
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   892
fun add_term_weights weight (ATerm (s, tms)) =
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   893
  (not (is_atp_variable s) andalso s <> "equal") ? Symtab.default (s, weight)
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   894
  #> fold (add_term_weights weight) tms
42538
9e3e45636459 generate pure TFF problems -- ToFoF doesn't like mixtures of FOF and TFF, even when the two logics coincide (e.g. for ground formulas)
blanchet
parents: 42534
diff changeset
   895
fun add_problem_line_weights weight (Formula (_, _, _, phi, _, _)) =
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
   896
    formula_fold (add_term_weights weight) phi
42528
a15f0db2bcaf added support for TFF type declarations
blanchet
parents: 42527
diff changeset
   897
  | add_problem_line_weights _ _ = I
41313
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   898
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   899
fun add_conjectures_weights [] = I
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   900
  | add_conjectures_weights conjs =
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   901
    let val (hyps, conj) = split_last conjs in
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   902
      add_problem_line_weights conj_weight conj
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   903
      #> fold (add_problem_line_weights hyp_weight) hyps
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   904
    end
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   905
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   906
fun add_facts_weights facts =
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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parents: 41211
diff changeset
   907
  let
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   908
    val num_facts = length facts
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   909
    fun weight_of j =
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   910
      fact_min_weight + (fact_max_weight - fact_min_weight) * Real.fromInt j
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   911
                        / Real.fromInt num_facts
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   912
  in
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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parents: 41211
diff changeset
   913
    map weight_of (0 upto num_facts - 1) ~~ facts
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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parents: 41211
diff changeset
   914
    |> fold (uncurry add_problem_line_weights)
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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parents: 41211
diff changeset
   915
  end
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   916
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   917
(* Weights are from 0.0 (most important) to 1.0 (least important). *)
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   918
fun atp_problem_weights problem =
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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diff changeset
   919
  Symtab.empty
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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parents: 41211
diff changeset
   920
  |> add_conjectures_weights (these (AList.lookup (op =) problem conjsN))
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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parents: 41211
diff changeset
   921
  |> add_facts_weights (these (AList.lookup (op =) problem factsN))
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
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diff changeset
   922
  |> Symtab.dest
41726
1ef01508bb9b sort E weights
blanchet
parents: 41491
diff changeset
   923
  |> sort (prod_ord Real.compare string_ord o pairself swap)
41313
a96ac4d180b7 optionally supply constant weights to E -- turned off by default until properly parameterized
blanchet
parents: 41211
diff changeset
   924
38282
319c59682c51 move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
diff changeset
   925
end;