author | haftmann |
Thu, 26 Aug 2010 20:51:17 +0200 | |
changeset 38786 | e46e7a9cb622 |
parent 38752 | 6628adcae4a7 |
child 38795 | 848be46708dc |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/Sledgehammer/sledgehammer_fact_filter.ML |
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Author: Jia Meng, Cambridge University Computer Laboratory and NICTA |
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Author: Jasmin Blanchette, TU Muenchen |
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*) |
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signature SLEDGEHAMMER_FACT_FILTER = |
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sig |
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datatype locality = General | Theory | Local | Chained |
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type relevance_override = |
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{add: Facts.ref list, |
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del: Facts.ref list, |
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only: bool} |
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val trace : bool Unsynchronized.ref |
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val name_thm_pairs_from_ref : |
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Proof.context -> unit Symtab.table -> thm list -> Facts.ref |
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-> ((string * locality) * thm) list |
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val relevant_facts : |
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bool -> real * real -> int -> bool -> relevance_override |
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generate full first-order formulas (FOF) in Sledgehammer
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-> Proof.context * (thm list * 'a) -> term list -> term |
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-> ((string * locality) * thm) list |
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end; |
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||
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structure Sledgehammer_Fact_Filter : SLEDGEHAMMER_FACT_FILTER = |
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struct |
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||
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open Sledgehammer_Util |
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val trace = Unsynchronized.ref false |
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fun trace_msg msg = if !trace then tracing (msg ()) else () |
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val respect_no_atp = true |
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datatype locality = General | Theory | Local | Chained |
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type relevance_override = |
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{add: Facts.ref list, |
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del: Facts.ref list, |
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only: bool} |
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val sledgehammer_prefix = "Sledgehammer" ^ Long_Name.separator |
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fun repair_name reserved multi j name = |
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(name |> Symtab.defined reserved name ? quote) ^ |
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(if multi then "(" ^ Int.toString j ^ ")" else "") |
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fun name_thm_pairs_from_ref ctxt reserved chained_ths xref = |
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let |
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val ths = ProofContext.get_fact ctxt xref |
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val name = Facts.string_of_ref xref |
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val multi = length ths > 1 |
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in |
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(ths, (1, [])) |
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|-> fold (fn th => fn (j, rest) => |
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(j + 1, ((repair_name reserved multi j name, |
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if member Thm.eq_thm chained_ths th then Chained |
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else General), th) :: rest)) |
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|> snd |
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end |
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(***************************************************************) |
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(* Relevance Filtering *) |
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(***************************************************************) |
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(*** constants with types ***) |
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(*An abstraction of Isabelle types*) |
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datatype pseudotype = PVar | PType of string * pseudotype list |
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fun string_for_pseudotype PVar = "?" |
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| string_for_pseudotype (PType (s, Ts)) = |
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(case Ts of |
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[] => "" |
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| [T] => string_for_pseudotype T |
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| Ts => string_for_pseudotypes Ts ^ " ") ^ s |
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and string_for_pseudotypes Ts = |
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"(" ^ commas (map string_for_pseudotype Ts) ^ ")" |
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(*Is the second type an instance of the first one?*) |
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fun match_pseudotype (PType (a, T), PType (b, U)) = |
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a = b andalso match_pseudotypes (T, U) |
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| match_pseudotype (PVar, _) = true |
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| match_pseudotype (_, PVar) = false |
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and match_pseudotypes ([], []) = true |
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| match_pseudotypes (T :: Ts, U :: Us) = |
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match_pseudotype (T, U) andalso match_pseudotypes (Ts, Us) |
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(*Is there a unifiable constant?*) |
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fun pseudoconst_mem f const_tab (c, c_typ) = |
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exists (curry (match_pseudotypes o f) c_typ) |
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(these (Symtab.lookup const_tab c)) |
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fun pseudotype_for (Type (c,typs)) = PType (c, map pseudotype_for typs) |
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| pseudotype_for (TFree _) = PVar |
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| pseudotype_for (TVar _) = PVar |
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(* Pairs a constant with the list of its type instantiations. *) |
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fun pseudoconst_for thy (c, T) = |
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(c, map pseudotype_for (Sign.const_typargs thy (c, T))) |
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handle TYPE _ => (c, []) (* Variable (locale constant): monomorphic *) |
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fun string_for_pseudoconst (s, []) = s |
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| string_for_pseudoconst (s, Ts) = s ^ string_for_pseudotypes Ts |
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fun string_for_super_pseudoconst (s, [[]]) = s |
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| string_for_super_pseudoconst (s, Tss) = |
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s ^ "{" ^ commas (map string_for_pseudotypes Tss) ^ "}" |
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val abs_prefix = "Sledgehammer.abs" |
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val skolem_prefix = "Sledgehammer.sko" |
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(* Add a pseudoconstant to the table, but a [] entry means a standard |
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connective, which we ignore.*) |
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fun add_pseudoconst_to_table also_skolem (c, ctyps) = |
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if also_skolem orelse not (String.isPrefix skolem_prefix c) then |
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Symtab.map_default (c, [ctyps]) |
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(fn [] => [] | ctypss => insert (op =) ctyps ctypss) |
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else |
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I |
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fun is_formula_type T = (T = HOLogic.boolT orelse T = propT) |
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val flip = Option.map not |
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(* These are typically simplified away by "Meson.presimplify". *) |
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val boring_consts = |
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[@{const_name False}, @{const_name True}, @{const_name If}, @{const_name Let}] |
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fun get_pseudoconsts thy also_skolems pos ts = |
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let |
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(* We include free variables, as well as constants, to handle locales. For |
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each quantifiers that must necessarily be skolemized by the ATP, we |
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introduce a fresh constant to simulate the effect of Skolemization. *) |
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fun do_term t = |
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case t of |
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Const x => add_pseudoconst_to_table also_skolems (pseudoconst_for thy x) |
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| Free (s, _) => add_pseudoconst_to_table also_skolems (s, []) |
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| t1 $ t2 => fold do_term [t1, t2] |
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| Abs (_, _, t') => |
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do_term t' #> add_pseudoconst_to_table true (abs_prefix, []) |
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| _ => I |
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fun do_quantifier will_surely_be_skolemized body_t = |
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do_formula pos body_t |
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#> (if also_skolems andalso will_surely_be_skolemized then |
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add_pseudoconst_to_table true (gensym skolem_prefix, []) |
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else |
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I) |
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and do_term_or_formula T = |
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if is_formula_type T then do_formula NONE else do_term |
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and do_formula pos t = |
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case t of |
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Const (@{const_name all}, _) $ Abs (_, _, body_t) => |
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do_quantifier (pos = SOME false) body_t |
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| @{const "==>"} $ t1 $ t2 => |
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do_formula (flip pos) t1 #> do_formula pos t2 |
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| Const (@{const_name "=="}, Type (_, [T, _])) $ t1 $ t2 => |
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fold (do_term_or_formula T) [t1, t2] |
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| @{const Trueprop} $ t1 => do_formula pos t1 |
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| @{const Not} $ t1 => do_formula (flip pos) t1 |
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| Const (@{const_name All}, _) $ Abs (_, _, body_t) => |
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do_quantifier (pos = SOME false) body_t |
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| Const (@{const_name Ex}, _) $ Abs (_, _, body_t) => |
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do_quantifier (pos = SOME true) body_t |
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| @{const "op &"} $ t1 $ t2 => fold (do_formula pos) [t1, t2] |
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| @{const "op |"} $ t1 $ t2 => fold (do_formula pos) [t1, t2] |
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| @{const HOL.implies} $ t1 $ t2 => |
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do_formula (flip pos) t1 #> do_formula pos t2 |
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| Const (@{const_name "op ="}, Type (_, [T, _])) $ t1 $ t2 => |
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fold (do_term_or_formula T) [t1, t2] |
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| Const (@{const_name If}, Type (_, [_, Type (_, [T, _])])) |
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$ t1 $ t2 $ t3 => |
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do_formula NONE t1 #> fold (do_term_or_formula T) [t2, t3] |
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| Const (@{const_name Ex1}, _) $ Abs (_, _, body_t) => |
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do_quantifier (is_some pos) body_t |
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| Const (@{const_name Ball}, _) $ t1 $ Abs (_, _, body_t) => |
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do_quantifier (pos = SOME false) |
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(HOLogic.mk_imp (incr_boundvars 1 t1 $ Bound 0, body_t)) |
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| Const (@{const_name Bex}, _) $ t1 $ Abs (_, _, body_t) => |
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do_quantifier (pos = SOME true) |
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(HOLogic.mk_conj (incr_boundvars 1 t1 $ Bound 0, body_t)) |
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| (t0 as Const (_, @{typ bool})) $ t1 => |
180 |
do_term t0 #> do_formula pos t1 (* theory constant *) |
|
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| _ => do_term t |
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in |
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Symtab.empty |> fold (Symtab.update o rpair []) boring_consts |
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|> fold (do_formula pos) ts |
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end |
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(*Inserts a dummy "constant" referring to the theory name, so that relevance |
|
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takes the given theory into account.*) |
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fun theory_const_prop_of theory_relevant th = |
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if theory_relevant then |
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let |
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val name = Context.theory_name (theory_of_thm th) |
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val t = Const (name ^ ". 1", @{typ bool}) |
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in t $ prop_of th end |
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else |
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prop_of th |
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197 |
|
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(**** Constant / Type Frequencies ****) |
199 |
||
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(* A two-dimensional symbol table counts frequencies of constants. It's keyed |
201 |
first by constant name and second by its list of type instantiations. For the |
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latter, we need a linear ordering on "pseudotype list". *) |
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|
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fun pseudotype_ord p = |
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case p of |
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(PVar, PVar) => EQUAL |
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| (PVar, PType _) => LESS |
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| (PType _, PVar) => GREATER |
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| (PType q1, PType q2) => |
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prod_ord fast_string_ord (dict_ord pseudotype_ord) (q1, q2) |
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|
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structure CTtab = |
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Table(type key = pseudotype list val ord = dict_ord pseudotype_ord) |
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fun count_axiom_consts theory_relevant thy (_, th) = |
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let |
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fun do_const (a, T) = |
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let val (c, cts) = pseudoconst_for thy (a, T) in |
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(* Two-dimensional table update. Constant maps to types maps to |
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count. *) |
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CTtab.map_default (cts, 0) (Integer.add 1) |
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|> Symtab.map_default (c, CTtab.empty) |
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end |
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fun do_term (Const x) = do_const x |
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| do_term (Free x) = do_const x |
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| do_term (t $ u) = do_term t #> do_term u |
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| do_term (Abs (_, _, t)) = do_term t |
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| do_term _ = I |
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in th |> theory_const_prop_of theory_relevant |> do_term end |
24287 | 230 |
|
231 |
||
232 |
(**** Actual Filtering Code ****) |
|
233 |
||
234 |
(*The frequency of a constant is the sum of those of all instances of its type.*) |
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fun pseudoconst_freq match const_tab (c, cts) = |
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CTtab.fold (fn (cts', m) => match (cts, cts') ? Integer.add m) |
38686 | 237 |
(the (Symtab.lookup const_tab c)) 0 |
238 |
handle Option.Option => 0 |
|
239 |
||
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|
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(* A surprising number of theorems contain only a few significant constants. |
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These include all induction rules, and other general theorems. *) |
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243 |
|
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(* "log" seems best in practice. A constant function of one ignores the constant |
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245 |
frequencies. *) |
38747 | 246 |
fun rel_log n = 1.0 + 2.0 / Math.ln (Real.fromInt n + 1.0) |
247 |
(* TODO: experiment |
|
248 |
fun irrel_log n = 0.5 + 1.0 / Math.ln (Real.fromInt n + 1.0) |
|
249 |
*) |
|
250 |
fun irrel_log n = Math.ln (Real.fromInt n + 19.0) / 6.4 |
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|
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252 |
(* FUDGE *) |
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val skolem_weight = 1.0 |
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val abs_weight = 2.0 |
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255 |
|
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256 |
(* Computes a constant's weight, as determined by its frequency. *) |
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val rel_weight = rel_log oo pseudoconst_freq match_pseudotypes |
258 |
fun irrel_weight const_tab (c as (s, _)) = |
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259 |
if String.isPrefix skolem_prefix s then skolem_weight |
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260 |
else if String.isPrefix abs_prefix s then abs_weight |
38747 | 261 |
else irrel_log (pseudoconst_freq (match_pseudotypes o swap) const_tab c) |
262 |
(* TODO: experiment |
|
263 |
fun irrel_weight _ _ = 1.0 |
|
264 |
*) |
|
24287 | 265 |
|
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266 |
(* FUDGE *) |
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fun locality_multiplier General = 1.0 |
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268 |
| locality_multiplier Theory = 1.1 |
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| locality_multiplier Local = 1.3 |
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| locality_multiplier Chained = 2.0 |
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|
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272 |
fun axiom_weight loc const_tab relevant_consts axiom_consts = |
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case axiom_consts |> List.partition (pseudoconst_mem I relevant_consts) |
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274 |
||> filter_out (pseudoconst_mem swap relevant_consts) of |
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([], []) => 0.0 |
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| (_, []) => 1.0 |
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| (rel, irrel) => |
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278 |
let |
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279 |
val rel_weight = fold (curry Real.+ o rel_weight const_tab) rel 0.0 |
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280 |
|> curry Real.* (locality_multiplier loc) |
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281 |
val irrel_weight = fold (curry Real.+ o irrel_weight const_tab) irrel 0.0 |
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282 |
val res = rel_weight / (rel_weight + irrel_weight) |
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283 |
in if Real.isFinite res then res else 0.0 end |
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284 |
|
38747 | 285 |
(* TODO: experiment |
286 |
fun debug_axiom_weight const_tab relevant_consts axiom_consts = |
|
287 |
case axiom_consts |> List.partition (pseudoconst_mem I relevant_consts) |
|
288 |
||> filter_out (pseudoconst_mem swap relevant_consts) of |
|
289 |
([], []) => 0.0 |
|
290 |
| (_, []) => 1.0 |
|
291 |
| (rel, irrel) => |
|
292 |
let |
|
293 |
val _ = tracing (PolyML.makestring ("REL: ", rel)) |
|
294 |
val _ = tracing (PolyML.makestring ("IRREL: ", irrel)) |
|
295 |
val rel_weight = fold (curry Real.+ o rel_weight const_tab) rel 0.0 |
|
296 |
val irrel_weight = fold (curry Real.+ o irrel_weight const_tab) irrel 0.0 |
|
297 |
val res = rel_weight / (rel_weight + irrel_weight) |
|
298 |
in if Real.isFinite res then res else 0.0 end |
|
299 |
*) |
|
300 |
||
301 |
fun pseudoconsts_of_term thy t = |
|
38742 | 302 |
Symtab.fold (fn (x, ys) => fold (fn y => cons (x, y)) ys) |
38747 | 303 |
(get_pseudoconsts thy true (SOME true) [t]) [] |
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304 |
fun pair_consts_axiom theory_relevant thy axiom = |
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305 |
(axiom, axiom |> snd |> theory_const_prop_of theory_relevant |
38747 | 306 |
|> pseudoconsts_of_term thy) |
24287 | 307 |
|
38699 | 308 |
type annotated_thm = |
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|
309 |
(((unit -> string) * locality) * thm) * (string * pseudotype list) list |
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|
310 |
|
38747 | 311 |
fun take_most_relevant max_max_imperfect max_relevant remaining_max |
312 |
(candidates : (annotated_thm * real) list) = |
|
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313 |
let |
38747 | 314 |
val max_imperfect = |
315 |
Real.ceil (Math.pow (max_max_imperfect, |
|
316 |
Real.fromInt remaining_max |
|
317 |
/ Real.fromInt max_relevant)) |
|
318 |
val (perfect, imperfect) = |
|
319 |
candidates |> List.partition (fn (_, w) => w > 0.99999) |
|
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320 |
||> sort (Real.compare o swap o pairself snd) |
38747 | 321 |
val ((accepts, more_rejects), rejects) = |
322 |
chop max_imperfect imperfect |>> append perfect |>> chop remaining_max |
|
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|
323 |
in |
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|
324 |
trace_msg (fn () => "Number of candidates: " ^ |
38745
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|
325 |
string_of_int (length candidates)); |
38744
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diff
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|
326 |
trace_msg (fn () => "Effective threshold: " ^ |
38745
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|
327 |
Real.toString (#2 (hd accepts))); |
38747 | 328 |
trace_msg (fn () => "Actually passed (" ^ Int.toString (length accepts) ^ |
329 |
"): " ^ (accepts |
|
38752
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diff
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|
330 |
|> map (fn ((((name, _), _), _), weight) => |
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changeset
|
331 |
name () ^ " [" ^ Real.toString weight ^ "]") |
38745
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parents:
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|
332 |
|> commas)); |
38747 | 333 |
(accepts, more_rejects @ rejects) |
38744
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|
334 |
end |
24287 | 335 |
|
38752
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|
336 |
(* FUDGE *) |
38683
23266607cb81
if no facts were selected on first iteration, try again with a lower threshold
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38682
diff
changeset
|
337 |
val threshold_divisor = 2.0 |
23266607cb81
if no facts were selected on first iteration, try again with a lower threshold
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parents:
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diff
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|
338 |
val ridiculous_threshold = 0.1 |
38747 | 339 |
val max_max_imperfect_fudge_factor = 0.66 |
38683
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|
340 |
|
38745
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|
341 |
fun relevance_filter ctxt threshold0 decay max_relevant theory_relevant |
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|
342 |
({add, del, ...} : relevance_override) axioms goal_ts = |
38739
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|
343 |
let |
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parents:
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changeset
|
344 |
val thy = ProofContext.theory_of ctxt |
8b8ed80b5699
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parents:
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changeset
|
345 |
val const_tab = fold (count_axiom_consts theory_relevant thy) axioms |
8b8ed80b5699
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parents:
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|
346 |
Symtab.empty |
8b8ed80b5699
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parents:
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changeset
|
347 |
val add_thms = maps (ProofContext.get_fact ctxt) add |
8b8ed80b5699
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parents:
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changeset
|
348 |
val del_thms = maps (ProofContext.get_fact ctxt) del |
38747 | 349 |
val max_max_imperfect = |
350 |
Math.sqrt (Real.fromInt max_relevant * max_max_imperfect_fudge_factor) |
|
351 |
fun iter j remaining_max threshold rel_const_tab hopeless hopeful = |
|
38739
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|
352 |
let |
38744
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|
353 |
fun game_over rejects = |
38747 | 354 |
(* Add "add:" facts. *) |
355 |
if null add_thms then |
|
356 |
[] |
|
38744
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|
357 |
else |
38747 | 358 |
map_filter (fn ((p as (_, th), _), _) => |
359 |
if member Thm.eq_thm add_thms th then SOME p |
|
360 |
else NONE) rejects |
|
361 |
fun relevant [] rejects hopeless [] = |
|
362 |
(* Nothing has been added this iteration. *) |
|
363 |
if j = 0 andalso threshold >= ridiculous_threshold then |
|
364 |
(* First iteration? Try again. *) |
|
365 |
iter 0 max_relevant (threshold / threshold_divisor) rel_const_tab |
|
366 |
hopeless hopeful |
|
38744
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blanchet
parents:
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changeset
|
367 |
else |
38747 | 368 |
game_over (rejects @ hopeless) |
369 |
| relevant candidates rejects hopeless [] = |
|
38739
8b8ed80b5699
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parents:
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diff
changeset
|
370 |
let |
38747 | 371 |
val (accepts, more_rejects) = |
372 |
take_most_relevant max_max_imperfect max_relevant remaining_max |
|
373 |
candidates |
|
38739
8b8ed80b5699
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parents:
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diff
changeset
|
374 |
val rel_const_tab' = |
38745
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parents:
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diff
changeset
|
375 |
rel_const_tab |
38747 | 376 |
|> fold (add_pseudoconst_to_table false) |
377 |
(maps (snd o fst) accepts) |
|
38744
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blanchet
parents:
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diff
changeset
|
378 |
fun is_dirty (c, _) = |
2b6333f78a9e
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blanchet
parents:
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diff
changeset
|
379 |
Symtab.lookup rel_const_tab' c <> Symtab.lookup rel_const_tab c |
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
380 |
val (hopeful_rejects, hopeless_rejects) = |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
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parents:
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diff
changeset
|
381 |
(rejects @ hopeless, ([], [])) |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
382 |
|-> fold (fn (ax as (_, consts), old_weight) => |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
383 |
if exists is_dirty consts then |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
384 |
apfst (cons (ax, NONE)) |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
385 |
else |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
386 |
apsnd (cons (ax, old_weight))) |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
387 |
|>> append (more_rejects |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
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diff
changeset
|
388 |
|> map (fn (ax as (_, consts), old_weight) => |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
389 |
(ax, if exists is_dirty consts then NONE |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
390 |
else SOME old_weight))) |
38747 | 391 |
val threshold = |
392 |
threshold + (1.0 - threshold) |
|
393 |
* Math.pow (decay, Real.fromInt (length accepts)) |
|
394 |
val remaining_max = remaining_max - length accepts |
|
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
395 |
in |
38744
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
396 |
trace_msg (fn () => "New or updated constants: " ^ |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
397 |
commas (rel_const_tab' |> Symtab.dest |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
398 |
|> subtract (op =) (Symtab.dest rel_const_tab) |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
399 |
|> map string_for_super_pseudoconst)); |
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
400 |
map (fst o fst) accepts @ |
38747 | 401 |
(if remaining_max = 0 then |
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
402 |
game_over (hopeful_rejects @ map (apsnd SOME) hopeless_rejects) |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
403 |
else |
38747 | 404 |
iter (j + 1) remaining_max threshold rel_const_tab' |
405 |
hopeless_rejects hopeful_rejects) |
|
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
406 |
end |
38747 | 407 |
| relevant candidates rejects hopeless |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
408 |
(((ax as (((_, loc), th), axiom_consts)), cached_weight) |
38747 | 409 |
:: hopeful) = |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
410 |
let |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
411 |
val weight = |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
412 |
case cached_weight of |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
413 |
SOME w => w |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
414 |
| NONE => axiom_weight loc const_tab rel_const_tab axiom_consts |
38747 | 415 |
(* TODO: experiment |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
416 |
val name = fst (fst (fst ax)) () |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
417 |
val _ = if String.isPrefix "lift.simps(3" name then |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
418 |
tracing ("*** " ^ name ^ PolyML.makestring (debug_axiom_weight const_tab rel_const_tab axiom_consts)) |
38747 | 419 |
else |
420 |
() |
|
421 |
*) |
|
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
422 |
in |
38741 | 423 |
if weight >= threshold then |
38747 | 424 |
relevant ((ax, weight) :: candidates) rejects hopeless hopeful |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
425 |
else |
38747 | 426 |
relevant candidates ((ax, weight) :: rejects) hopeless hopeful |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
427 |
end |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
428 |
in |
38744
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
429 |
trace_msg (fn () => |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
430 |
"ITERATION " ^ string_of_int j ^ ": current threshold: " ^ |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
431 |
Real.toString threshold ^ ", constants: " ^ |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
432 |
commas (rel_const_tab |> Symtab.dest |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
433 |
|> filter (curry (op <>) [] o snd) |
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
434 |
|> map string_for_super_pseudoconst)); |
38747 | 435 |
relevant [] [] hopeless hopeful |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
436 |
end |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
437 |
in |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
438 |
axioms |> filter_out (member Thm.eq_thm del_thms o snd) |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
439 |
|> map (rpair NONE o pair_consts_axiom theory_relevant thy) |
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
440 |
|> iter 0 max_relevant threshold0 |
38747 | 441 |
(get_pseudoconsts thy false (SOME false) goal_ts) [] |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
442 |
|> tap (fn res => trace_msg (fn () => |
38686 | 443 |
"Total relevant: " ^ Int.toString (length res))) |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
444 |
end |
24287 | 445 |
|
38744
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
446 |
|
24287 | 447 |
(***************************************************************) |
19768
9afd9b9c47d0
ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents:
19746
diff
changeset
|
448 |
(* Retrieving and filtering lemmas *) |
9afd9b9c47d0
ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents:
19746
diff
changeset
|
449 |
(***************************************************************) |
9afd9b9c47d0
ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents:
19746
diff
changeset
|
450 |
|
33022
c95102496490
Removal of the unused atpset concept, the atp attribute and some related code.
paulson
parents:
32994
diff
changeset
|
451 |
(*** retrieve lemmas and filter them ***) |
19768
9afd9b9c47d0
ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents:
19746
diff
changeset
|
452 |
|
20757
fe84fe0dfd30
Definitions produced by packages are now blacklisted.
paulson
parents:
20661
diff
changeset
|
453 |
(*Reject theorems with names like "List.filter.filter_list_def" or |
21690
552d20ff9a95
Removal of theorem tagging, which the ATP linkup no longer requires.
paulson
parents:
21588
diff
changeset
|
454 |
"Accessible_Part.acc.defs", as these are definitions arising from packages.*) |
20757
fe84fe0dfd30
Definitions produced by packages are now blacklisted.
paulson
parents:
20661
diff
changeset
|
455 |
fun is_package_def a = |
30364
577edc39b501
moved basic algebra of long names from structure NameSpace to Long_Name;
wenzelm
parents:
30291
diff
changeset
|
456 |
let val names = Long_Name.explode a |
21690
552d20ff9a95
Removal of theorem tagging, which the ATP linkup no longer requires.
paulson
parents:
21588
diff
changeset
|
457 |
in |
552d20ff9a95
Removal of theorem tagging, which the ATP linkup no longer requires.
paulson
parents:
21588
diff
changeset
|
458 |
length names > 2 andalso |
552d20ff9a95
Removal of theorem tagging, which the ATP linkup no longer requires.
paulson
parents:
21588
diff
changeset
|
459 |
not (hd names = "local") andalso |
552d20ff9a95
Removal of theorem tagging, which the ATP linkup no longer requires.
paulson
parents:
21588
diff
changeset
|
460 |
String.isSuffix "_def" a orelse String.isSuffix "_defs" a |
552d20ff9a95
Removal of theorem tagging, which the ATP linkup no longer requires.
paulson
parents:
21588
diff
changeset
|
461 |
end; |
20757
fe84fe0dfd30
Definitions produced by packages are now blacklisted.
paulson
parents:
20661
diff
changeset
|
462 |
|
38085
cc44e887246c
avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents:
38027
diff
changeset
|
463 |
fun make_fact_table xs = |
37616
c8d2d84d6011
always perform relevance filtering on original formulas
blanchet
parents:
37580
diff
changeset
|
464 |
fold (Termtab.update o `(prop_of o snd)) xs Termtab.empty |
38085
cc44e887246c
avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents:
38027
diff
changeset
|
465 |
fun make_unique xs = Termtab.fold (cons o snd) (make_fact_table xs) [] |
19768
9afd9b9c47d0
ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents:
19746
diff
changeset
|
466 |
|
37626
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
467 |
(* FIXME: put other record thms here, or declare as "no_atp" *) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
468 |
val multi_base_blacklist = |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
469 |
["defs", "select_defs", "update_defs", "induct", "inducts", "split", "splits", |
38682 | 470 |
"split_asm", "cases", "ext_cases", "eq.simps", "eq.refl", "nchotomy", |
471 |
"case_cong", "weak_case_cong"] |
|
472 |
|> map (prefix ".") |
|
37626
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
473 |
|
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
474 |
val max_lambda_nesting = 3 |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
475 |
|
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
476 |
fun term_has_too_many_lambdas max (t1 $ t2) = |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
477 |
exists (term_has_too_many_lambdas max) [t1, t2] |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
478 |
| term_has_too_many_lambdas max (Abs (_, _, t)) = |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
479 |
max = 0 orelse term_has_too_many_lambdas (max - 1) t |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
480 |
| term_has_too_many_lambdas _ _ = false |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
481 |
|
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
482 |
(* Don't count nested lambdas at the level of formulas, since they are |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
483 |
quantifiers. *) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
484 |
fun formula_has_too_many_lambdas Ts (Abs (_, T, t)) = |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
485 |
formula_has_too_many_lambdas (T :: Ts) t |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
486 |
| formula_has_too_many_lambdas Ts t = |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
487 |
if is_formula_type (fastype_of1 (Ts, t)) then |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
488 |
exists (formula_has_too_many_lambdas Ts) (#2 (strip_comb t)) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
489 |
else |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
490 |
term_has_too_many_lambdas max_lambda_nesting t |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
491 |
|
38692 | 492 |
(* The max apply depth of any "metis" call in "Metis_Examples" (on 2007-10-31) |
37626
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
493 |
was 11. *) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
494 |
val max_apply_depth = 15 |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
495 |
|
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
496 |
fun apply_depth (f $ t) = Int.max (apply_depth f, apply_depth t + 1) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
497 |
| apply_depth (Abs (_, _, t)) = apply_depth t |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
498 |
| apply_depth _ = 0 |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
499 |
|
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
500 |
fun is_formula_too_complex t = |
38085
cc44e887246c
avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents:
38027
diff
changeset
|
501 |
apply_depth t > max_apply_depth orelse formula_has_too_many_lambdas [] t |
37626
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
502 |
|
37543 | 503 |
val exists_sledgehammer_const = |
37626
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
504 |
exists_Const (fn (s, _) => String.isPrefix sledgehammer_prefix s) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
505 |
|
38652
e063be321438
perform eta-expansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38644
diff
changeset
|
506 |
fun is_strange_theorem th = |
37626
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
507 |
case head_of (concl_of th) of |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
508 |
Const (a, _) => (a <> @{const_name Trueprop} andalso |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
509 |
a <> @{const_name "=="}) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
510 |
| _ => false |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
511 |
|
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
512 |
val type_has_top_sort = |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
513 |
exists_subtype (fn TFree (_, []) => true | TVar (_, []) => true | _ => false) |
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37616
diff
changeset
|
514 |
|
38085
cc44e887246c
avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents:
38027
diff
changeset
|
515 |
(**** Predicates to detect unwanted facts (prolific or likely to cause |
37347
635425a442e8
show more respect for user-specified facts, even if they could lead to unsound proofs + don't throw away "unsound" theorems in "full_type" mode, since they are then sound
blanchet
parents:
37345
diff
changeset
|
516 |
unsoundness) ****) |
21470
7c1b59ddcd56
Consolidation of code to "blacklist" unhelpful theorems, including record
paulson
parents:
21431
diff
changeset
|
517 |
|
38289
74dd8dd33512
adapt "too_general_equality" blacklisting to the new FOF context, where quantifiers are sometimes present
blanchet
parents:
38279
diff
changeset
|
518 |
(* Too general means, positive equality literal with a variable X as one |
74dd8dd33512
adapt "too_general_equality" blacklisting to the new FOF context, where quantifiers are sometimes present
blanchet
parents:
38279
diff
changeset
|
519 |
operand, when X does not occur properly in the other operand. This rules out |
74dd8dd33512
adapt "too_general_equality" blacklisting to the new FOF context, where quantifiers are sometimes present
blanchet
parents:
38279
diff
changeset
|
520 |
clearly inconsistent facts such as X = a | X = b, though it by no means |
74dd8dd33512
adapt "too_general_equality" blacklisting to the new FOF context, where quantifiers are sometimes present
blanchet
parents:
38279
diff
changeset
|
521 |
guarantees soundness. *) |
21470
7c1b59ddcd56
Consolidation of code to "blacklist" unhelpful theorems, including record
paulson
parents:
21431
diff
changeset
|
522 |
|
38289
74dd8dd33512
adapt "too_general_equality" blacklisting to the new FOF context, where quantifiers are sometimes present
blanchet
parents:
38279
diff
changeset
|
523 |
(* Unwanted equalities are those between a (bound or schematic) variable that |
74dd8dd33512
adapt "too_general_equality" blacklisting to the new FOF context, where quantifiers are sometimes present
blanchet
parents:
38279
diff
changeset
|
524 |
does not properly occur in the second operand. *) |
38607
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
525 |
val is_exhaustive_finite = |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
526 |
let |
38629 | 527 |
fun is_bad_equal (Var z) t = |
528 |
not (exists_subterm (fn Var z' => z = z' | _ => false) t) |
|
529 |
| is_bad_equal (Bound j) t = not (loose_bvar1 (t, j)) |
|
530 |
| is_bad_equal _ _ = false |
|
531 |
fun do_equals t1 t2 = is_bad_equal t1 t2 orelse is_bad_equal t2 t1 |
|
38607
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
532 |
fun do_formula pos t = |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
533 |
case (pos, t) of |
38615
4e1d828ee514
improve "x = A | x = B | x = C"-style axiom detection
blanchet
parents:
38611
diff
changeset
|
534 |
(_, @{const Trueprop} $ t1) => do_formula pos t1 |
38607
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
535 |
| (true, Const (@{const_name all}, _) $ Abs (_, _, t')) => |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
536 |
do_formula pos t' |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
537 |
| (true, Const (@{const_name All}, _) $ Abs (_, _, t')) => |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
538 |
do_formula pos t' |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
539 |
| (false, Const (@{const_name Ex}, _) $ Abs (_, _, t')) => |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
540 |
do_formula pos t' |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
541 |
| (_, @{const "==>"} $ t1 $ t2) => |
38629 | 542 |
do_formula (not pos) t1 andalso |
543 |
(t2 = @{prop False} orelse do_formula pos t2) |
|
38786
e46e7a9cb622
formerly unnamed infix impliciation now named HOL.implies
haftmann
parents:
38752
diff
changeset
|
544 |
| (_, @{const HOL.implies} $ t1 $ t2) => |
38629 | 545 |
do_formula (not pos) t1 andalso |
546 |
(t2 = @{const False} orelse do_formula pos t2) |
|
38607
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
547 |
| (_, @{const Not} $ t1) => do_formula (not pos) t1 |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
548 |
| (true, @{const "op |"} $ t1 $ t2) => forall (do_formula pos) [t1, t2] |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
549 |
| (false, @{const "op &"} $ t1 $ t2) => forall (do_formula pos) [t1, t2] |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
550 |
| (true, Const (@{const_name "op ="}, _) $ t1 $ t2) => do_equals t1 t2 |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
551 |
| (true, Const (@{const_name "=="}, _) $ t1 $ t2) => do_equals t1 t2 |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
552 |
| _ => false |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
553 |
in do_formula true end |
a2abe8c2a1c2
generalize the "too general equality" code to handle facts like "x ~= A ==> x = B"
blanchet
parents:
38606
diff
changeset
|
554 |
|
38592
ae6bb801e583
bound variables can be just as evil as schematic variables and lead to unsound proofs (e.g. "all_bool_eq")
blanchet
parents:
38587
diff
changeset
|
555 |
fun has_bound_or_var_of_type tycons = |
ae6bb801e583
bound variables can be just as evil as schematic variables and lead to unsound proofs (e.g. "all_bool_eq")
blanchet
parents:
38587
diff
changeset
|
556 |
exists_subterm (fn Var (_, Type (s, _)) => member (op =) tycons s |
ae6bb801e583
bound variables can be just as evil as schematic variables and lead to unsound proofs (e.g. "all_bool_eq")
blanchet
parents:
38587
diff
changeset
|
557 |
| Abs (_, Type (s, _), _) => member (op =) tycons s |
ae6bb801e583
bound variables can be just as evil as schematic variables and lead to unsound proofs (e.g. "all_bool_eq")
blanchet
parents:
38587
diff
changeset
|
558 |
| _ => false) |
21431
ef9080e7dbbc
Outputs a minimal number of arity clauses. Tidying of blacklist, fixing the blacklisting of thm lists
paulson
parents:
21397
diff
changeset
|
559 |
|
38085
cc44e887246c
avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents:
38027
diff
changeset
|
560 |
(* Facts are forbidden to contain variables of these types. The typical reason |
37347
635425a442e8
show more respect for user-specified facts, even if they could lead to unsound proofs + don't throw away "unsound" theorems in "full_type" mode, since they are then sound
blanchet
parents:
37345
diff
changeset
|
561 |
is that they lead to unsoundness. Note that "unit" satisfies numerous |
38085
cc44e887246c
avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents:
38027
diff
changeset
|
562 |
equations like "?x = ()". The resulting clauses will have no type constraint, |
37347
635425a442e8
show more respect for user-specified facts, even if they could lead to unsound proofs + don't throw away "unsound" theorems in "full_type" mode, since they are then sound
blanchet
parents:
37345
diff
changeset
|
563 |
yielding false proofs. Even "bool" leads to many unsound proofs, though only |
635425a442e8
show more respect for user-specified facts, even if they could lead to unsound proofs + don't throw away "unsound" theorems in "full_type" mode, since they are then sound
blanchet
parents:
37345
diff
changeset
|
564 |
for higher-order problems. *) |
38592
ae6bb801e583
bound variables can be just as evil as schematic variables and lead to unsound proofs (e.g. "all_bool_eq")
blanchet
parents:
38587
diff
changeset
|
565 |
val dangerous_types = [@{type_name unit}, @{type_name bool}, @{type_name prop}]; |
22217
a5d983f7113f
Tidying; more debugging information. New reference unwanted_types.
paulson
parents:
22193
diff
changeset
|
566 |
|
38085
cc44e887246c
avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents:
38027
diff
changeset
|
567 |
(* Facts containing variables of type "unit" or "bool" or of the form |
38290
581a402a80f0
prevent ATP thread for staying around for 1 minute if an exception occurred earlier;
blanchet
parents:
38289
diff
changeset
|
568 |
"ALL x. x = A | x = B | x = C" are likely to lead to unsound proofs if types |
581a402a80f0
prevent ATP thread for staying around for 1 minute if an exception occurred earlier;
blanchet
parents:
38289
diff
changeset
|
569 |
are omitted. *) |
38593 | 570 |
fun is_dangerous_term full_types t = |
38609 | 571 |
not full_types andalso |
38679
2cfd0777580f
destroy elim rules before checking for finite exhaustive facts
blanchet
parents:
38652
diff
changeset
|
572 |
let val t = transform_elim_term t in |
2cfd0777580f
destroy elim rules before checking for finite exhaustive facts
blanchet
parents:
38652
diff
changeset
|
573 |
has_bound_or_var_of_type dangerous_types t orelse |
2cfd0777580f
destroy elim rules before checking for finite exhaustive facts
blanchet
parents:
38652
diff
changeset
|
574 |
is_exhaustive_finite t |
2cfd0777580f
destroy elim rules before checking for finite exhaustive facts
blanchet
parents:
38652
diff
changeset
|
575 |
end |
21470
7c1b59ddcd56
Consolidation of code to "blacklist" unhelpful theorems, including record
paulson
parents:
21431
diff
changeset
|
576 |
|
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
577 |
fun is_theorem_bad_for_atps full_types thm = |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
578 |
let val t = prop_of thm in |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
579 |
is_formula_too_complex t orelse exists_type type_has_top_sort t orelse |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
580 |
is_dangerous_term full_types t orelse exists_sledgehammer_const t orelse |
38652
e063be321438
perform eta-expansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38644
diff
changeset
|
581 |
is_strange_theorem thm |
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
582 |
end |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
583 |
|
38696
4c6b65d6a135
quote facts whose names collide with a keyword or command name (cf. "subclass" in "Jinja/J/TypeSafe.thy")
blanchet
parents:
38692
diff
changeset
|
584 |
fun all_name_thms_pairs ctxt reserved full_types add_thms chained_ths = |
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
585 |
let |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
586 |
val thy = ProofContext.theory_of ctxt |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
587 |
val thy_prefix = Context.theory_name thy ^ Long_Name.separator |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
588 |
val global_facts = PureThy.facts_of thy |
38644
25bbbaf7ce65
don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents:
38629
diff
changeset
|
589 |
val local_facts = ProofContext.facts_of ctxt |
25bbbaf7ce65
don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents:
38629
diff
changeset
|
590 |
val named_locals = local_facts |> Facts.dest_static [] |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
591 |
val is_chained = member Thm.eq_thm chained_ths |
38697
9bbd5141d0a1
don't backtick facts that contain schematic variables, since this doesn't work (for some reason)
blanchet
parents:
38696
diff
changeset
|
592 |
(* Unnamed, not chained formulas with schematic variables are omitted, |
9bbd5141d0a1
don't backtick facts that contain schematic variables, since this doesn't work (for some reason)
blanchet
parents:
38696
diff
changeset
|
593 |
because they are rejected by the backticks (`...`) parser for some |
9bbd5141d0a1
don't backtick facts that contain schematic variables, since this doesn't work (for some reason)
blanchet
parents:
38696
diff
changeset
|
594 |
reason. *) |
38738
0ce517c1970f
make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents:
38699
diff
changeset
|
595 |
fun is_good_unnamed_local th = |
0ce517c1970f
make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents:
38699
diff
changeset
|
596 |
forall (fn (_, ths) => not (member Thm.eq_thm ths th)) named_locals |
0ce517c1970f
make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents:
38699
diff
changeset
|
597 |
andalso (not (exists_subterm is_Var (prop_of th)) orelse (is_chained th)) |
38644
25bbbaf7ce65
don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents:
38629
diff
changeset
|
598 |
val unnamed_locals = |
38738
0ce517c1970f
make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents:
38699
diff
changeset
|
599 |
local_facts |> Facts.props |> filter is_good_unnamed_local |
38697
9bbd5141d0a1
don't backtick facts that contain schematic variables, since this doesn't work (for some reason)
blanchet
parents:
38696
diff
changeset
|
600 |
|> map (pair "" o single) |
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
601 |
val full_space = |
38738
0ce517c1970f
make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents:
38699
diff
changeset
|
602 |
Name_Space.merge (Facts.space_of global_facts, Facts.space_of local_facts) |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
603 |
fun add_facts global foldx facts = |
38699 | 604 |
foldx (fn (name0, ths) => |
605 |
if name0 <> "" andalso |
|
606 |
forall (not o member Thm.eq_thm add_thms) ths andalso |
|
607 |
(Facts.is_concealed facts name0 orelse |
|
608 |
(respect_no_atp andalso is_package_def name0) orelse |
|
609 |
exists (fn s => String.isSuffix s name0) multi_base_blacklist orelse |
|
610 |
String.isSuffix "_def_raw" (* FIXME: crude hack *) name0) then |
|
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
611 |
I |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
612 |
else |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
613 |
let |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
614 |
val base_loc = |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
615 |
if not global then Local |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
616 |
else if String.isPrefix thy_prefix name0 then Theory |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
617 |
else General |
38699 | 618 |
val multi = length ths > 1 |
38696
4c6b65d6a135
quote facts whose names collide with a keyword or command name (cf. "subclass" in "Jinja/J/TypeSafe.thy")
blanchet
parents:
38692
diff
changeset
|
619 |
fun backquotify th = |
4c6b65d6a135
quote facts whose names collide with a keyword or command name (cf. "subclass" in "Jinja/J/TypeSafe.thy")
blanchet
parents:
38692
diff
changeset
|
620 |
"`" ^ Print_Mode.setmp [Print_Mode.input] |
4c6b65d6a135
quote facts whose names collide with a keyword or command name (cf. "subclass" in "Jinja/J/TypeSafe.thy")
blanchet
parents:
38692
diff
changeset
|
621 |
(Syntax.string_of_term ctxt) (prop_of th) ^ "`" |
38738
0ce517c1970f
make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents:
38699
diff
changeset
|
622 |
|> String.translate (fn c => if Char.isPrint c then str c else "") |
0ce517c1970f
make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents:
38699
diff
changeset
|
623 |
|> simplify_spaces |
38699 | 624 |
fun check_thms a = |
625 |
case try (ProofContext.get_thms ctxt) a of |
|
626 |
NONE => false |
|
627 |
| SOME ths' => Thm.eq_thms (ths, ths') |
|
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
628 |
in |
38699 | 629 |
pair 1 |
630 |
#> fold (fn th => fn (j, rest) => |
|
631 |
(j + 1, |
|
632 |
if is_theorem_bad_for_atps full_types th andalso |
|
633 |
not (member Thm.eq_thm add_thms th) then |
|
634 |
rest |
|
635 |
else |
|
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
636 |
(((fn () => |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
637 |
if name0 = "" then |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
638 |
th |> backquotify |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
639 |
else |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
640 |
let |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
641 |
val name1 = Facts.extern facts name0 |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
642 |
val name2 = Name_Space.extern full_space name0 |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
643 |
in |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
644 |
case find_first check_thms [name1, name2, name0] of |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
645 |
SOME name => repair_name reserved multi j name |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
646 |
| NONE => "" |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
647 |
end), if is_chained th then Chained else base_loc), |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
648 |
(multi, th)) :: rest)) ths |
38699 | 649 |
#> snd |
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
650 |
end) |
38644
25bbbaf7ce65
don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents:
38629
diff
changeset
|
651 |
in |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
652 |
[] |> add_facts false fold local_facts (unnamed_locals @ named_locals) |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
653 |
|> add_facts true Facts.fold_static global_facts global_facts |
38644
25bbbaf7ce65
don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents:
38629
diff
changeset
|
654 |
end |
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
655 |
|
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
656 |
(* The single-name theorems go after the multiple-name ones, so that single |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
657 |
names are preferred when both are available. *) |
38699 | 658 |
fun name_thm_pairs ctxt respect_no_atp = |
38744
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
659 |
List.partition (fst o snd) #> op @ #> map (apsnd snd) |
38699 | 660 |
#> respect_no_atp ? filter_out (No_ATPs.member ctxt o snd) |
38627
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
661 |
|
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
662 |
(***************************************************************) |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
663 |
(* ATP invocation methods setup *) |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
664 |
(***************************************************************) |
760a2d5cc671
make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents:
38617
diff
changeset
|
665 |
|
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
666 |
fun relevant_facts full_types (threshold0, threshold1) max_relevant |
38744
2b6333f78a9e
make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents:
38743
diff
changeset
|
667 |
theory_relevant (relevance_override as {add, del, only}) |
37995
06f02b15ef8a
generate full first-order formulas (FOF) in Sledgehammer
blanchet
parents:
37626
diff
changeset
|
668 |
(ctxt, (chained_ths, _)) hyp_ts concl_t = |
37538
97ab019d5ac8
make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents:
37537
diff
changeset
|
669 |
let |
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
670 |
val decay = 1.0 - Math.pow ((1.0 - threshold1) / (1.0 - threshold0), |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
671 |
1.0 / Real.fromInt (max_relevant + 1)) |
37538
97ab019d5ac8
make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents:
37537
diff
changeset
|
672 |
val add_thms = maps (ProofContext.get_fact ctxt) add |
38696
4c6b65d6a135
quote facts whose names collide with a keyword or command name (cf. "subclass" in "Jinja/J/TypeSafe.thy")
blanchet
parents:
38692
diff
changeset
|
673 |
val reserved = reserved_isar_keyword_table () |
37538
97ab019d5ac8
make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents:
37537
diff
changeset
|
674 |
val axioms = |
38699 | 675 |
(if only then |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
676 |
maps (map (fn ((name, loc), th) => ((K name, loc), (true, th))) |
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
677 |
o name_thm_pairs_from_ref ctxt reserved chained_ths) add |
38699 | 678 |
else |
679 |
all_name_thms_pairs ctxt reserved full_types add_thms chained_ths) |
|
38688 | 680 |
|> name_thm_pairs ctxt (respect_no_atp andalso not only) |
38595
bbb0982656eb
make sure that "add:" doesn't influence the relevance filter too much
blanchet
parents:
38594
diff
changeset
|
681 |
|> make_unique |
37538
97ab019d5ac8
make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents:
37537
diff
changeset
|
682 |
in |
38688 | 683 |
trace_msg (fn () => "Considering " ^ Int.toString (length axioms) ^ |
684 |
" theorems"); |
|
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
685 |
(if threshold0 > 1.0 orelse threshold0 > threshold1 then |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
686 |
[] |
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
687 |
else if threshold0 < 0.0 then |
38739
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
688 |
axioms |
8b8ed80b5699
renamed "relevance_convergence" to "relevance_decay"
blanchet
parents:
38738
diff
changeset
|
689 |
else |
38745
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
690 |
relevance_filter ctxt threshold0 decay max_relevant theory_relevant |
ad577fd62ee4
reorganize options regarding to the relevance threshold and decay
blanchet
parents:
38744
diff
changeset
|
691 |
relevance_override axioms (concl_t :: hyp_ts)) |
38752
6628adcae4a7
consider "locality" when assigning weights to facts
blanchet
parents:
38751
diff
changeset
|
692 |
|> map (apfst (apfst (fn f => f ()))) |> sort_wrt (fst o fst) |
37538
97ab019d5ac8
make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents:
37537
diff
changeset
|
693 |
end |
30536
07b4f050e4df
split relevance-filter and writing of problem-files;
immler@in.tum.de
parents:
30364
diff
changeset
|
694 |
|
15347 | 695 |
end; |