author | blanchet |
Thu, 25 Aug 2011 14:25:07 +0200 | |
changeset 44492 | a330c0608da8 |
parent 44411 | e3629929b171 |
child 44494 | a77901b3774e |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/Metis/metis_tactics.ML |
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Author: Kong W. Susanto, Cambridge University Computer Laboratory |
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Author: Lawrence C. Paulson, Cambridge University Computer Laboratory |
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Author: Jasmin Blanchette, TU Muenchen |
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Copyright Cambridge University 2007 |
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HOL setup for the Metis prover. |
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*) |
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signature METIS_TACTICS = |
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sig |
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val metisN : string |
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val full_typesN : string |
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val partial_typesN : string |
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val no_typesN : string |
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val really_full_type_enc : string |
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val full_type_enc : string |
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val partial_type_enc : string |
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val no_type_enc : string |
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val full_type_syss : string list |
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val partial_type_syss : string list |
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val trace : bool Config.T |
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val verbose : bool Config.T |
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val new_skolemizer : bool Config.T |
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val metis_tac : string list -> Proof.context -> thm list -> int -> tactic |
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val setup : theory -> theory |
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end |
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structure Metis_Tactics : METIS_TACTICS = |
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struct |
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open ATP_Translate |
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open Metis_Translate |
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open Metis_Reconstruct |
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val metisN = "metis" |
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val full_typesN = "full_types" |
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val partial_typesN = "partial_types" |
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val no_typesN = "no_types" |
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val really_full_type_enc = "mangled_tags_uniform" |
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val full_type_enc = "poly_guards_uniform_query" |
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val partial_type_enc = "poly_args" |
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val no_type_enc = "erased" |
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val full_type_syss = [full_type_enc, really_full_type_enc] |
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val partial_type_syss = partial_type_enc :: full_type_syss |
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val type_enc_aliases = |
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[(full_typesN, full_type_syss), |
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(partial_typesN, partial_type_syss), |
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(no_typesN, [no_type_enc])] |
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fun method_call_for_type_enc type_syss = |
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metisN ^ " (" ^ |
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(case AList.find (op =) type_enc_aliases type_syss of |
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[alias] => alias |
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| _ => hd type_syss) ^ ")" |
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val new_skolemizer = |
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Attrib.setup_config_bool @{binding metis_new_skolemizer} (K false) |
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(* Designed to work also with monomorphic instances of polymorphic theorems. *) |
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fun have_common_thm ths1 ths2 = |
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exists (member (Term.aconv_untyped o pairself prop_of) ths1) |
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(map Meson.make_meta_clause ths2) |
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(*Determining which axiom clauses are actually used*) |
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fun used_axioms axioms (th, Metis_Proof.Axiom _) = SOME (lookth axioms th) |
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| used_axioms _ _ = NONE |
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(* Lightweight predicate type information comes in two flavors, "t = t'" and |
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"t => t'", where "t" and "t'" are the same term modulo type tags. |
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In Isabelle, type tags are stripped away, so we are left with "t = t" or |
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"t => t". Type tag idempotence is also handled this way. *) |
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fun reflexive_or_trivial_from_metis ctxt type_enc sym_tab old_skolems mth = |
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let val thy = Proof_Context.theory_of ctxt in |
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case hol_clause_from_metis ctxt type_enc sym_tab old_skolems mth of |
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Const (@{const_name HOL.eq}, _) $ _ $ t => |
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let |
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val ct = cterm_of thy t |
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val cT = ctyp_of_term ct |
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in refl |> Drule.instantiate' [SOME cT] [SOME ct] end |
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| Const (@{const_name disj}, _) $ t1 $ t2 => |
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(if can HOLogic.dest_not t1 then t2 else t1) |
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|> HOLogic.mk_Trueprop |> cterm_of thy |> Thm.trivial |
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| _ => raise Fail "unexpected tags sym clause" |
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end |
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|> Meson.make_meta_clause |
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fun clause_params type_enc = |
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{ordering = Metis_KnuthBendixOrder.default, |
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orderLiterals = Metis_Clause.UnsignedLiteralOrder, |
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orderTerms = true} |
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fun active_params type_enc = |
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{clause = clause_params type_enc, |
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prefactor = #prefactor Metis_Active.default, |
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postfactor = #postfactor Metis_Active.default} |
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val waiting_params = |
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{symbolsWeight = 1.0, |
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variablesWeight = 0.0, |
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literalsWeight = 0.0, |
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models = []} |
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fun resolution_params type_enc = |
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{active = active_params type_enc, waiting = waiting_params} |
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(* Main function to start Metis proof and reconstruction *) |
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fun FOL_SOLVE (type_enc :: fallback_type_syss) ctxt cls ths0 = |
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let val thy = Proof_Context.theory_of ctxt |
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val new_skolemizer = |
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Config.get ctxt new_skolemizer orelse null (Meson.choice_theorems thy) |
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val th_cls_pairs = |
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map2 (fn j => fn th => |
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(Thm.get_name_hint th, |
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Meson_Clausify.cnf_axiom ctxt new_skolemizer j th)) |
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(0 upto length ths0 - 1) ths0 |
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val ths = maps (snd o snd) th_cls_pairs |
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val dischargers = map (fst o snd) th_cls_pairs |
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val _ = trace_msg ctxt (fn () => "FOL_SOLVE: CONJECTURE CLAUSES") |
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val _ = app (fn th => trace_msg ctxt (fn () => Display.string_of_thm ctxt th)) cls |
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val _ = trace_msg ctxt (fn () => "THEOREM CLAUSES") |
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val _ = app (fn th => trace_msg ctxt (fn () => Display.string_of_thm ctxt th)) ths |
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val _ = trace_msg ctxt (fn () => "type_enc = " ^ type_enc) |
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val type_enc = type_enc_from_string Unsound type_enc |
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val (sym_tab, axioms, old_skolems) = |
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prepare_metis_problem ctxt type_enc cls ths |
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fun get_isa_thm mth Isa_Reflexive_or_Trivial = |
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reflexive_or_trivial_from_metis ctxt type_enc sym_tab old_skolems mth |
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29b55f292e0b
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|
130 |
| get_isa_thm _ (Isa_Raw ith) = ith |
29b55f292e0b
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changeset
|
131 |
val axioms = axioms |> map (fn (mth, ith) => (mth, get_isa_thm mth ith)) |
39978
11bfb7e7cc86
added "trace_metis" configuration option, replacing old-fashioned references
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|
132 |
val _ = trace_msg ctxt (fn () => "CLAUSES GIVEN TO METIS") |
43159
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parents:
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changeset
|
133 |
val thms = axioms |> map fst |
39978
11bfb7e7cc86
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parents:
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changeset
|
134 |
val _ = app (fn th => trace_msg ctxt (fn () => Metis_Thm.toString th)) thms |
11bfb7e7cc86
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changeset
|
135 |
val _ = trace_msg ctxt (fn () => "START METIS PROVE PROCESS") |
32956 | 136 |
in |
43159
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parents:
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changeset
|
137 |
case filter (fn t => prop_of t aconv @{prop False}) cls of |
29b55f292e0b
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diff
changeset
|
138 |
false_th :: _ => [false_th RS @{thm FalseE}] |
32956 | 139 |
| [] => |
44411
e3629929b171
change Metis's default settings if type information axioms are generated
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parents:
44408
diff
changeset
|
140 |
case Metis_Resolution.new (resolution_params type_enc) |
e3629929b171
change Metis's default settings if type information axioms are generated
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|
141 |
{axioms = thms, conjecture = []} |
39497
fa16349939b7
complete refactoring of Metis along the lines of Sledgehammer
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|
142 |
|> Metis_Resolution.loop of |
39419
c9accfd621a5
"Metis." -> "Metis_" to reflect change in "metis.ML"
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|
143 |
Metis_Resolution.Contradiction mth => |
39978
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|
144 |
let val _ = trace_msg ctxt (fn () => "METIS RECONSTRUCTION START: " ^ |
39419
c9accfd621a5
"Metis." -> "Metis_" to reflect change in "metis.ML"
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changeset
|
145 |
Metis_Thm.toString mth) |
32956 | 146 |
val ctxt' = fold Variable.declare_constraints (map prop_of cls) ctxt |
147 |
(*add constraints arising from converting goal to clause form*) |
|
39419
c9accfd621a5
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parents:
39376
diff
changeset
|
148 |
val proof = Metis_Proof.proof mth |
43094 | 149 |
val result = |
43212 | 150 |
axioms |
44492
a330c0608da8
avoid using ":" for anything but systematic type tag annotations, because Hurd's Metis gives it that special semantics
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|
151 |
|> fold (replay_one_inference ctxt' type_enc old_skolems sym_tab) proof |
43134
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parents:
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diff
changeset
|
152 |
val used = map_filter (used_axioms axioms) proof |
39978
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parents:
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changeset
|
153 |
val _ = trace_msg ctxt (fn () => "METIS COMPLETED...clauses actually used:") |
11bfb7e7cc86
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parents:
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changeset
|
154 |
val _ = app (fn th => trace_msg ctxt (fn () => Display.string_of_thm ctxt th)) used |
43134
0c82e00ba63e
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parents:
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changeset
|
155 |
val names = th_cls_pairs |> map fst |
0c82e00ba63e
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diff
changeset
|
156 |
val used_names = |
0c82e00ba63e
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diff
changeset
|
157 |
th_cls_pairs |
0c82e00ba63e
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changeset
|
158 |
|> map_filter (fn (name, (_, cls)) => |
0c82e00ba63e
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diff
changeset
|
159 |
if have_common_thm used cls then SOME name |
0c82e00ba63e
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|
160 |
else NONE) |
0c82e00ba63e
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diff
changeset
|
161 |
val unused_names = names |> subtract (op =) used_names |
32956 | 162 |
in |
39497
fa16349939b7
complete refactoring of Metis along the lines of Sledgehammer
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parents:
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diff
changeset
|
163 |
if not (null cls) andalso not (have_common_thm used cls) then |
42650
552eae49f97d
reintroduce this idea of running "metisFT" after a failed "metis" -- I took it out in e85ce10cef1a because I couldn't think of a reasonable use case, but now that ATPs use sound encodings and include dangerous facts (e.g. True_or_False) it makes more sense than ever to run "metisFT" after "metis"
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parents:
42616
diff
changeset
|
164 |
verbose_warning ctxt "The assumptions are inconsistent" |
36383 | 165 |
else |
166 |
(); |
|
43134
0c82e00ba63e
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blanchet
parents:
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diff
changeset
|
167 |
if not (null unused_names) then |
0c82e00ba63e
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changeset
|
168 |
"Unused theorems: " ^ commas_quote unused_names |
0c82e00ba63e
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changeset
|
169 |
|> verbose_warning ctxt |
36230
43d10a494c91
added warning about inconsistent context to Metis;
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parents:
36170
diff
changeset
|
170 |
else |
43d10a494c91
added warning about inconsistent context to Metis;
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parents:
36170
diff
changeset
|
171 |
(); |
32956 | 172 |
case result of |
173 |
(_,ith)::_ => |
|
39978
11bfb7e7cc86
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parents:
39964
diff
changeset
|
174 |
(trace_msg ctxt (fn () => "Success: " ^ Display.string_of_thm ctxt ith); |
39887
74939e2afb95
second step in introducing the new Skolemizer -- notably, added procedure for discharging Skolem assumptions
blanchet
parents:
39886
diff
changeset
|
175 |
[discharge_skolem_premises ctxt dischargers ith]) |
39978
11bfb7e7cc86
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parents:
39964
diff
changeset
|
176 |
| _ => (trace_msg ctxt (fn () => "Metis: No result"); []) |
32956 | 177 |
end |
39419
c9accfd621a5
"Metis." -> "Metis_" to reflect change in "metis.ML"
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parents:
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changeset
|
178 |
| Metis_Resolution.Satisfiable _ => |
39978
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parents:
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diff
changeset
|
179 |
(trace_msg ctxt (fn () => "Metis: No first-order proof with the lemmas supplied"); |
43212 | 180 |
if null fallback_type_syss then |
43034
18259246abb5
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changeset
|
181 |
() |
18259246abb5
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blanchet
parents:
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diff
changeset
|
182 |
else |
42650
552eae49f97d
reintroduce this idea of running "metisFT" after a failed "metis" -- I took it out in e85ce10cef1a because I couldn't think of a reasonable use case, but now that ATPs use sound encodings and include dangerous facts (e.g. True_or_False) it makes more sense than ever to run "metisFT" after "metis"
blanchet
parents:
42616
diff
changeset
|
183 |
raise METIS ("FOL_SOLVE", |
43034
18259246abb5
try both "metis" and (on failure) "metisFT" in replay
blanchet
parents:
42847
diff
changeset
|
184 |
"No first-order proof with the lemmas supplied"); |
38097
5e4ad2df09f3
revert exception throwing in FOL_SOLVE, since they're not caught anyway
blanchet
parents:
38028
diff
changeset
|
185 |
[]) |
42733
01ef1c3d9cfd
more robust exception handling in Metis (also works if there are several subgoals)
blanchet
parents:
42650
diff
changeset
|
186 |
end |
01ef1c3d9cfd
more robust exception handling in Metis (also works if there are several subgoals)
blanchet
parents:
42650
diff
changeset
|
187 |
handle METIS (loc, msg) => |
43212 | 188 |
case fallback_type_syss of |
43034
18259246abb5
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parents:
42847
diff
changeset
|
189 |
[] => error ("Failed to replay Metis proof in Isabelle." ^ |
18259246abb5
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parents:
42847
diff
changeset
|
190 |
(if Config.get ctxt verbose then "\n" ^ loc ^ ": " ^ msg |
18259246abb5
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parents:
42847
diff
changeset
|
191 |
else "")) |
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
192 |
| _ => |
43228
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
193 |
(verbose_warning ctxt |
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
194 |
("Falling back on " ^ |
43626
a867ebb12209
renamed "type_sys" to "type_enc", which is more accurate
blanchet
parents:
43545
diff
changeset
|
195 |
quote (method_call_for_type_enc fallback_type_syss) ^ "..."); |
43228
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
196 |
FOL_SOLVE fallback_type_syss ctxt cls ths0) |
23442
028e39e5e8f3
The Metis prover (slightly modified version from Larry);
wenzelm
parents:
diff
changeset
|
197 |
|
43964
9338aa218f09
thread proper context through, to make sure that "using [[meson_max_clauses = 200]]" is not ignored when clausifying the conjecture
blanchet
parents:
43963
diff
changeset
|
198 |
fun neg_clausify ctxt = |
38028 | 199 |
single |
43964
9338aa218f09
thread proper context through, to make sure that "using [[meson_max_clauses = 200]]" is not ignored when clausifying the conjecture
blanchet
parents:
43963
diff
changeset
|
200 |
#> Meson.make_clauses_unsorted ctxt |
39890 | 201 |
#> map Meson_Clausify.introduce_combinators_in_theorem |
38028 | 202 |
#> Meson.finish_cnf |
203 |
||
39269
c2795d8a2461
use definitional CNF for the goal if at least one of the premisses would lead to too many clauses in Meson
blanchet
parents:
39267
diff
changeset
|
204 |
fun preskolem_tac ctxt st0 = |
c2795d8a2461
use definitional CNF for the goal if at least one of the premisses would lead to too many clauses in Meson
blanchet
parents:
39267
diff
changeset
|
205 |
(if exists (Meson.has_too_many_clauses ctxt) |
c2795d8a2461
use definitional CNF for the goal if at least one of the premisses would lead to too many clauses in Meson
blanchet
parents:
39267
diff
changeset
|
206 |
(Logic.prems_of_goal (prop_of st0) 1) then |
42336
d63d43e85879
improve definitional CNF on goal by moving "not" past the quantifiers
blanchet
parents:
40665
diff
changeset
|
207 |
Simplifier.full_simp_tac (Meson_Clausify.ss_only @{thms not_all not_ex}) 1 |
d63d43e85879
improve definitional CNF on goal by moving "not" past the quantifiers
blanchet
parents:
40665
diff
changeset
|
208 |
THEN cnf.cnfx_rewrite_tac ctxt 1 |
39269
c2795d8a2461
use definitional CNF for the goal if at least one of the premisses would lead to too many clauses in Meson
blanchet
parents:
39267
diff
changeset
|
209 |
else |
c2795d8a2461
use definitional CNF for the goal if at least one of the premisses would lead to too many clauses in Meson
blanchet
parents:
39267
diff
changeset
|
210 |
all_tac) st0 |
c2795d8a2461
use definitional CNF for the goal if at least one of the premisses would lead to too many clauses in Meson
blanchet
parents:
39267
diff
changeset
|
211 |
|
38652
e063be321438
perform eta-expansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38632
diff
changeset
|
212 |
val type_has_top_sort = |
e063be321438
perform eta-expansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38632
diff
changeset
|
213 |
exists_subtype (fn TFree (_, []) => true | TVar (_, []) => true | _ => false) |
e063be321438
perform eta-expansion of quantifier bodies in Sledgehammer translation when needed + transform elim rules later;
blanchet
parents:
38632
diff
changeset
|
214 |
|
43212 | 215 |
fun generic_metis_tac type_syss ctxt ths i st0 = |
37926
e6ff246c0cdb
renamings + only need second component of name pool to reconstruct proofs
blanchet
parents:
37925
diff
changeset
|
216 |
let |
39978
11bfb7e7cc86
added "trace_metis" configuration option, replacing old-fashioned references
blanchet
parents:
39964
diff
changeset
|
217 |
val _ = trace_msg ctxt (fn () => |
43194 | 218 |
"Metis called with theorems\n" ^ |
43034
18259246abb5
try both "metis" and (on failure) "metisFT" in replay
blanchet
parents:
42847
diff
changeset
|
219 |
cat_lines (map (Display.string_of_thm ctxt) ths)) |
43212 | 220 |
fun tac clause = resolve_tac (FOL_SOLVE type_syss ctxt clause ths) 1 |
32956 | 221 |
in |
37626
1146291fe718
move blacklisting completely out of the clausifier;
blanchet
parents:
37625
diff
changeset
|
222 |
if exists_type type_has_top_sort (prop_of st0) then |
43299
f78d5f0818a0
be a bit more liberal with respect to the universal sort -- it sometimes help
blanchet
parents:
43298
diff
changeset
|
223 |
verbose_warning ctxt "Proof state contains the universal sort {}" |
35568
8fbbfc39508f
renamed type_has_empty_sort to type_has_topsort -- {} is the full universal sort;
wenzelm
parents:
34087
diff
changeset
|
224 |
else |
43299
f78d5f0818a0
be a bit more liberal with respect to the universal sort -- it sometimes help
blanchet
parents:
43298
diff
changeset
|
225 |
(); |
43964
9338aa218f09
thread proper context through, to make sure that "using [[meson_max_clauses = 200]]" is not ignored when clausifying the conjecture
blanchet
parents:
43963
diff
changeset
|
226 |
Meson.MESON (preskolem_tac ctxt) (maps (neg_clausify ctxt)) tac ctxt i st0 |
32956 | 227 |
end |
23442
028e39e5e8f3
The Metis prover (slightly modified version from Larry);
wenzelm
parents:
diff
changeset
|
228 |
|
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
229 |
fun metis_tac [] = generic_metis_tac partial_type_syss |
43212 | 230 |
| metis_tac type_syss = generic_metis_tac type_syss |
23442
028e39e5e8f3
The Metis prover (slightly modified version from Larry);
wenzelm
parents:
diff
changeset
|
231 |
|
38632
9cde57cdd0e3
treat "using X by metis" (more or less) the same as "by (metis X)"
blanchet
parents:
38614
diff
changeset
|
232 |
(* Whenever "X" has schematic type variables, we treat "using X by metis" as |
43100 | 233 |
"by (metis X)" to prevent "Subgoal.FOCUS" from freezing the type variables. |
38632
9cde57cdd0e3
treat "using X by metis" (more or less) the same as "by (metis X)"
blanchet
parents:
38614
diff
changeset
|
234 |
We don't do it for nonschematic facts "X" because this breaks a few proofs |
9cde57cdd0e3
treat "using X by metis" (more or less) the same as "by (metis X)"
blanchet
parents:
38614
diff
changeset
|
235 |
(in the rare and subtle case where a proof relied on extensionality not being |
38994 | 236 |
applied) and brings few benefits. *) |
38632
9cde57cdd0e3
treat "using X by metis" (more or less) the same as "by (metis X)"
blanchet
parents:
38614
diff
changeset
|
237 |
val has_tvar = |
9cde57cdd0e3
treat "using X by metis" (more or less) the same as "by (metis X)"
blanchet
parents:
38614
diff
changeset
|
238 |
exists_type (exists_subtype (fn TVar _ => true | _ => false)) o prop_of |
43034
18259246abb5
try both "metis" and (on failure) "metisFT" in replay
blanchet
parents:
42847
diff
changeset
|
239 |
|
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
240 |
fun method default_type_syss (override_type_syss, ths) ctxt facts = |
43100 | 241 |
let |
43228
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
242 |
val _ = |
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
243 |
if default_type_syss = full_type_syss then |
44052 | 244 |
legacy_feature "Old \"metisFT\" method -- use \"metis (full_types)\" instead" |
43228
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
245 |
else |
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
246 |
() |
43100 | 247 |
val (schem_facts, nonschem_facts) = List.partition has_tvar facts |
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
248 |
val type_syss = override_type_syss |> the_default default_type_syss |
43100 | 249 |
in |
43099 | 250 |
HEADGOAL (Method.insert_tac nonschem_facts THEN' |
43212 | 251 |
CHANGED_PROP |
252 |
o generic_metis_tac type_syss ctxt (schem_facts @ ths)) |
|
43099 | 253 |
end |
43100 | 254 |
|
43235 | 255 |
fun setup_method (binding, type_syss) = |
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
256 |
((Args.parens (Scan.repeat Parse.short_ident) |
43963 | 257 |
>> maps (fn s => AList.lookup (op =) type_enc_aliases s |> the_default [s])) |
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
258 |
|> Scan.option |> Scan.lift) |
43212 | 259 |
-- Attrib.thms >> (METHOD oo method type_syss) |
43228
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
260 |
|> Method.setup binding |
23442
028e39e5e8f3
The Metis prover (slightly modified version from Larry);
wenzelm
parents:
diff
changeset
|
261 |
|
32956 | 262 |
val setup = |
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
263 |
[((@{binding metis}, partial_type_syss), |
43228
2ed2f092e990
obsoleted "metisFT", and added "no_types" version of Metis as fallback to Sledgehammer after noticing how useful it can be
blanchet
parents:
43212
diff
changeset
|
264 |
"Metis for FOL and HOL problems"), |
43303
c4ea897a5326
added a really fully typed translation as a fallback for Metis, in rare cases where Metis correctly proves a theorem but has type-unsound steps in it (which is likelier to happen with some of the lighter translations)
blanchet
parents:
43301
diff
changeset
|
265 |
((@{binding metisFT}, full_type_syss), |
43212 | 266 |
"Metis for FOL/HOL problems with fully-typed translation")] |
43034
18259246abb5
try both "metis" and (on failure) "metisFT" in replay
blanchet
parents:
42847
diff
changeset
|
267 |
|> fold (uncurry setup_method) |
23442
028e39e5e8f3
The Metis prover (slightly modified version from Larry);
wenzelm
parents:
diff
changeset
|
268 |
|
028e39e5e8f3
The Metis prover (slightly modified version from Larry);
wenzelm
parents:
diff
changeset
|
269 |
end; |