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(* Title: HOL/Tools/Sledgehammer/sledgehammer_atp_translate.ML
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Author: Fabian Immler, TU Muenchen
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Author: Makarius
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Author: Jasmin Blanchette, TU Muenchen
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Translation of HOL to FOL for Sledgehammer.
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*)
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signature SLEDGEHAMMER_ATP_TRANSLATE =
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sig
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type 'a fo_term = 'a ATP_Problem.fo_term
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type format = ATP_Problem.format
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type formula_kind = ATP_Problem.formula_kind
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type 'a problem = 'a ATP_Problem.problem
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type locality = Sledgehammer_Filter.locality
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datatype polymorphism = Polymorphic | Monomorphic | Mangled_Monomorphic
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datatype type_level =
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All_Types | Nonmonotonic_Types | Finite_Types | Const_Arg_Types | No_Types
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datatype type_heaviness = Heavy | Light
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datatype type_system =
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Simple_Types of type_level |
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Preds of polymorphism * type_level * type_heaviness |
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Tags of polymorphism * type_level * type_heaviness
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type translated_formula
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val readable_names : bool Config.T
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val fact_prefix : string
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val conjecture_prefix : string
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val helper_prefix : string
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val typed_helper_suffix : string
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val predicator_name : string
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val app_op_name : string
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val type_pred_name : string
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val simple_type_prefix : string
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val type_sys_from_string : string -> type_system
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val polymorphism_of_type_sys : type_system -> polymorphism
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val level_of_type_sys : type_system -> type_level
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val is_type_sys_virtually_sound : type_system -> bool
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val is_type_sys_fairly_sound : type_system -> bool
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val unmangled_const : string -> string * string fo_term list
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val translate_atp_fact :
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Proof.context -> format -> type_system -> bool -> (string * locality) * thm
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-> translated_formula option * ((string * locality) * thm)
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val prepare_atp_problem :
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Proof.context -> format -> formula_kind -> formula_kind -> type_system
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-> bool option -> term list -> term
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-> (translated_formula option * ((string * 'a) * thm)) list
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-> string problem * string Symtab.table * int * int
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* (string * 'a) list vector * int list * int Symtab.table
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val atp_problem_weights : string problem -> (string * real) list
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end;
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structure Sledgehammer_ATP_Translate : SLEDGEHAMMER_ATP_TRANSLATE =
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struct
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open ATP_Problem
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open Metis_Translate
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open Sledgehammer_Util
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open Sledgehammer_Filter
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(* experimental *)
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val generate_useful_info = false
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fun useful_isabelle_info s =
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if generate_useful_info then
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SOME (ATerm ("[]", [ATerm ("isabelle_" ^ s, [])]))
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else
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NONE
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val intro_info = useful_isabelle_info "intro"
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val elim_info = useful_isabelle_info "elim"
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val simp_info = useful_isabelle_info "simp"
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(* Readable names are often much shorter, especially if types are mangled in
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names. Also, the logic for generating legal SNARK sort names is only
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implemented for readable names. Finally, readable names are, well, more
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readable. For these reason, they are enabled by default. *)
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val readable_names =
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Attrib.setup_config_bool @{binding sledgehammer_atp_readable_names} (K true)
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val type_decl_prefix = "ty_"
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val sym_decl_prefix = "sy_"
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val sym_formula_prefix = "sym_"
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val fact_prefix = "fact_"
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val conjecture_prefix = "conj_"
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val helper_prefix = "help_"
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val class_rel_clause_prefix = "crel_";
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val arity_clause_prefix = "arity_"
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val tfree_prefix = "tfree_"
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val typed_helper_suffix = "_T"
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val untyped_helper_suffix = "_U"
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val predicator_name = "hBOOL"
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val app_op_name = "hAPP"
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val type_pred_name = "is"
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val simple_type_prefix = "ty_"
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fun make_simple_type s =
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if s = tptp_bool_type orelse s = tptp_fun_type orelse
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s = tptp_individual_type then
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s
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else
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simple_type_prefix ^ ascii_of s
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(* Freshness almost guaranteed! *)
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val sledgehammer_weak_prefix = "Sledgehammer:"
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datatype polymorphism = Polymorphic | Monomorphic | Mangled_Monomorphic
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datatype type_level =
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All_Types | Nonmonotonic_Types | Finite_Types | Const_Arg_Types | No_Types
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datatype type_heaviness = Heavy | Light
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datatype type_system =
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Simple_Types of type_level |
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Preds of polymorphism * type_level * type_heaviness |
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Tags of polymorphism * type_level * type_heaviness
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fun try_unsuffixes ss s =
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fold (fn s' => fn NONE => try (unsuffix s') s | some => some) ss NONE
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fun type_sys_from_string s =
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(case try (unprefix "poly_") s of
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SOME s => (SOME Polymorphic, s)
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| NONE =>
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case try (unprefix "mono_") s of
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SOME s => (SOME Monomorphic, s)
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| NONE =>
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case try (unprefix "mangled_") s of
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SOME s => (SOME Mangled_Monomorphic, s)
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| NONE => (NONE, s))
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||> (fn s =>
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(* "_query" and "_bang" are for the ASCII-challenged Mirabelle. *)
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case try_unsuffixes ["?", "_query"] s of
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SOME s => (Nonmonotonic_Types, s)
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| NONE =>
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case try_unsuffixes ["!", "_bang"] s of
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SOME s => (Finite_Types, s)
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| NONE => (All_Types, s))
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||> apsnd (fn s =>
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case try (unsuffix "_heavy") s of
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SOME s => (Heavy, s)
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| NONE => (Light, s))
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|> (fn (poly, (level, (heaviness, core))) =>
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case (core, (poly, level, heaviness)) of
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("simple", (NONE, _, Light)) => Simple_Types level
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| ("preds", (SOME poly, _, _)) => Preds (poly, level, heaviness)
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| ("tags", (SOME Polymorphic, All_Types, _)) =>
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Tags (Polymorphic, All_Types, heaviness)
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| ("tags", (SOME Polymorphic, _, _)) =>
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(* The actual light encoding is very unsound. *)
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Tags (Polymorphic, level, Heavy)
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| ("tags", (SOME poly, _, _)) => Tags (poly, level, heaviness)
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| ("args", (SOME poly, All_Types (* naja *), Light)) =>
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Preds (poly, Const_Arg_Types, Light)
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| ("erased", (NONE, All_Types (* naja *), Light)) =>
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Preds (Polymorphic, No_Types, Light)
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| _ => raise Same.SAME)
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handle Same.SAME => error ("Unknown type system: " ^ quote s ^ ".")
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fun polymorphism_of_type_sys (Simple_Types _) = Mangled_Monomorphic
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| polymorphism_of_type_sys (Preds (poly, _, _)) = poly
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| polymorphism_of_type_sys (Tags (poly, _, _)) = poly
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fun level_of_type_sys (Simple_Types level) = level
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| level_of_type_sys (Preds (_, level, _)) = level
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| level_of_type_sys (Tags (_, level, _)) = level
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fun heaviness_of_type_sys (Simple_Types _) = Heavy
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| heaviness_of_type_sys (Preds (_, _, heaviness)) = heaviness
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| heaviness_of_type_sys (Tags (_, _, heaviness)) = heaviness
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fun is_type_level_virtually_sound level =
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level = All_Types orelse level = Nonmonotonic_Types
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val is_type_sys_virtually_sound =
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is_type_level_virtually_sound o level_of_type_sys
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fun is_type_level_fairly_sound level =
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is_type_level_virtually_sound level orelse level = Finite_Types
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val is_type_sys_fairly_sound = is_type_level_fairly_sound o level_of_type_sys
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fun is_setting_higher_order THF (Simple_Types _) = true
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| is_setting_higher_order _ _ = false
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type translated_formula =
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{name: string,
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locality: locality,
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kind: formula_kind,
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combformula: (name, typ, combterm) formula,
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atomic_types: typ list}
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fun update_combformula f ({name, locality, kind, combformula, atomic_types}
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: translated_formula) =
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{name = name, locality = locality, kind = kind, combformula = f combformula,
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atomic_types = atomic_types} : translated_formula
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fun fact_lift f ({combformula, ...} : translated_formula) = f combformula
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val type_instance = Sign.typ_instance o Proof_Context.theory_of
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fun insert_type ctxt get_T x xs =
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let val T = get_T x in
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if exists (curry (type_instance ctxt) T o get_T) xs then xs
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else x :: filter_out (curry (type_instance ctxt o swap) T o get_T) xs
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end
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(* The Booleans indicate whether all type arguments should be kept. *)
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datatype type_arg_policy =
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Explicit_Type_Args of bool |
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Mangled_Type_Args of bool |
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No_Type_Args
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fun should_drop_arg_type_args (Simple_Types _) =
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false (* since TFF doesn't support overloading *)
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| should_drop_arg_type_args type_sys =
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level_of_type_sys type_sys = All_Types andalso
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heaviness_of_type_sys type_sys = Heavy
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fun general_type_arg_policy type_sys =
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if level_of_type_sys type_sys = No_Types then
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No_Type_Args
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else if polymorphism_of_type_sys type_sys = Mangled_Monomorphic then
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Mangled_Type_Args (should_drop_arg_type_args type_sys)
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else
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blanchet@43702
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Explicit_Type_Args (should_drop_arg_type_args type_sys)
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blanchet@43434
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fun type_arg_policy type_sys s =
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blanchet@43792
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if s = @{const_name HOL.eq} orelse
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(s = app_op_name andalso level_of_type_sys type_sys = Const_Arg_Types) then
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No_Type_Args
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blanchet@43792
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else
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blanchet@43792
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general_type_arg_policy type_sys
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blanchet@43088
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blanchet@43797
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fun atp_type_literals_for_types format type_sys kind Ts =
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blanchet@43797
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if level_of_type_sys type_sys = No_Types orelse format = CNF_UEQ then
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[]
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else
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Ts |> type_literals_for_types
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|> filter (fn TyLitVar _ => kind <> Conjecture
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blanchet@43224
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| TyLitFree _ => kind = Conjecture)
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blanchet@41385
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blanchet@43405
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fun mk_aconns c phis =
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blanchet@43405
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let val (phis', phi') = split_last phis in
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fold_rev (mk_aconn c) phis' phi'
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end
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fun mk_ahorn [] phi = phi
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| mk_ahorn phis psi = AConn (AImplies, [mk_aconns AAnd phis, psi])
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blanchet@43393
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fun mk_aquant _ [] phi = phi
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| mk_aquant q xs (phi as AQuant (q', xs', phi')) =
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blanchet@43393
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if q = q' then AQuant (q, xs @ xs', phi') else AQuant (q, xs, phi)
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blanchet@43393
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| mk_aquant q xs phi = AQuant (q, xs, phi)
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fun close_universally atom_vars phi =
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let
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fun formula_vars bounds (AQuant (_, xs, phi)) =
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blanchet@43397
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formula_vars (map fst xs @ bounds) phi
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blanchet@41393
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| formula_vars bounds (AConn (_, phis)) = fold (formula_vars bounds) phis
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blanchet@43393
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| formula_vars bounds (AAtom tm) =
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blanchet@43397
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union (op =) (atom_vars tm []
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|> filter_out (member (op =) bounds o fst))
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blanchet@43393
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in mk_aquant AForall (formula_vars [] phi []) phi end
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blanchet@43393
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blanchet@43402
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fun combterm_vars (CombApp (tm1, tm2)) = fold combterm_vars [tm1, tm2]
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blanchet@43393
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| combterm_vars (CombConst _) = I
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blanchet@43445
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| combterm_vars (CombVar (name, T)) = insert (op =) (name, SOME T)
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blanchet@43545
|
269 |
fun close_combformula_universally phi = close_universally combterm_vars phi
|
blanchet@43393
|
270 |
|
blanchet@43393
|
271 |
fun term_vars (ATerm (name as (s, _), tms)) =
|
blanchet@43839
|
272 |
is_tptp_variable s ? insert (op =) (name, NONE) #> fold term_vars tms
|
blanchet@43545
|
273 |
fun close_formula_universally phi = close_universally term_vars phi
|
blanchet@41393
|
274 |
|
blanchet@43835
|
275 |
val homo_infinite_type_name = @{type_name ind} (* any infinite type *)
|
blanchet@43835
|
276 |
val homo_infinite_type = Type (homo_infinite_type_name, [])
|
blanchet@43835
|
277 |
|
blanchet@43835
|
278 |
fun fo_term_from_typ higher_order =
|
blanchet@43835
|
279 |
let
|
blanchet@43835
|
280 |
fun term (Type (s, Ts)) =
|
blanchet@43835
|
281 |
ATerm (case (higher_order, s) of
|
blanchet@43835
|
282 |
(true, @{type_name bool}) => `I tptp_bool_type
|
blanchet@43835
|
283 |
| (true, @{type_name fun}) => `I tptp_fun_type
|
blanchet@43835
|
284 |
| _ => if s = homo_infinite_type_name then `I tptp_individual_type
|
blanchet@43835
|
285 |
else `make_fixed_type_const s,
|
blanchet@43835
|
286 |
map term Ts)
|
blanchet@43835
|
287 |
| term (TFree (s, _)) = ATerm (`make_fixed_type_var s, [])
|
blanchet@43835
|
288 |
| term (TVar ((x as (s, _)), _)) =
|
blanchet@43835
|
289 |
ATerm ((make_schematic_type_var x, s), [])
|
blanchet@43835
|
290 |
in term end
|
blanchet@43433
|
291 |
|
blanchet@43433
|
292 |
(* This shouldn't clash with anything else. *)
|
blanchet@43413
|
293 |
val mangled_type_sep = "\000"
|
blanchet@43413
|
294 |
|
blanchet@43433
|
295 |
fun generic_mangled_type_name f (ATerm (name, [])) = f name
|
blanchet@43433
|
296 |
| generic_mangled_type_name f (ATerm (name, tys)) =
|
blanchet@43626
|
297 |
f name ^ "(" ^ space_implode "," (map (generic_mangled_type_name f) tys)
|
blanchet@43626
|
298 |
^ ")"
|
blanchet@43413
|
299 |
|
blanchet@43839
|
300 |
val bool_atype = AType (`I tptp_bool_type)
|
blanchet@43839
|
301 |
|
blanchet@43835
|
302 |
fun ho_type_from_fo_term higher_order pred_sym ary =
|
blanchet@43804
|
303 |
let
|
blanchet@43804
|
304 |
fun to_atype ty =
|
blanchet@43804
|
305 |
AType ((make_simple_type (generic_mangled_type_name fst ty),
|
blanchet@43804
|
306 |
generic_mangled_type_name snd ty))
|
blanchet@43804
|
307 |
fun to_afun f1 f2 tys = AFun (f1 (hd tys), f2 (nth tys 1))
|
blanchet@43839
|
308 |
fun to_fo 0 ty = if pred_sym then bool_atype else to_atype ty
|
blanchet@43835
|
309 |
| to_fo ary (ATerm (_, tys)) = to_afun to_atype (to_fo (ary - 1)) tys
|
blanchet@43835
|
310 |
fun to_ho (ty as ATerm ((s, _), tys)) =
|
blanchet@43835
|
311 |
if s = tptp_fun_type then to_afun to_ho to_ho tys else to_atype ty
|
blanchet@43835
|
312 |
in if higher_order then to_ho else to_fo ary end
|
blanchet@43804
|
313 |
|
blanchet@43835
|
314 |
fun mangled_type higher_order pred_sym ary =
|
blanchet@43835
|
315 |
ho_type_from_fo_term higher_order pred_sym ary o fo_term_from_typ higher_order
|
blanchet@43804
|
316 |
|
blanchet@43835
|
317 |
fun mangled_const_name T_args (s, s') =
|
blanchet@43804
|
318 |
let
|
blanchet@43835
|
319 |
val ty_args = map (fo_term_from_typ false) T_args
|
blanchet@43804
|
320 |
fun type_suffix f g =
|
blanchet@43804
|
321 |
fold_rev (curry (op ^) o g o prefix mangled_type_sep
|
blanchet@43804
|
322 |
o generic_mangled_type_name f) ty_args ""
|
blanchet@43804
|
323 |
in (s ^ type_suffix fst ascii_of, s' ^ type_suffix snd I) end
|
blanchet@43413
|
324 |
|
blanchet@43413
|
325 |
val parse_mangled_ident =
|
blanchet@43413
|
326 |
Scan.many1 (not o member (op =) ["(", ")", ","]) >> implode
|
blanchet@43413
|
327 |
|
blanchet@43413
|
328 |
fun parse_mangled_type x =
|
blanchet@43413
|
329 |
(parse_mangled_ident
|
blanchet@43413
|
330 |
-- Scan.optional ($$ "(" |-- Scan.optional parse_mangled_types [] --| $$ ")")
|
blanchet@43413
|
331 |
[] >> ATerm) x
|
blanchet@43413
|
332 |
and parse_mangled_types x =
|
blanchet@43413
|
333 |
(parse_mangled_type ::: Scan.repeat ($$ "," |-- parse_mangled_type)) x
|
blanchet@43413
|
334 |
|
blanchet@43413
|
335 |
fun unmangled_type s =
|
blanchet@43413
|
336 |
s |> suffix ")" |> raw_explode
|
blanchet@43413
|
337 |
|> Scan.finite Symbol.stopper
|
blanchet@43413
|
338 |
(Scan.error (!! (fn _ => raise Fail ("unrecognized mangled type " ^
|
blanchet@43413
|
339 |
quote s)) parse_mangled_type))
|
blanchet@43413
|
340 |
|> fst
|
blanchet@43413
|
341 |
|
blanchet@43432
|
342 |
val unmangled_const_name = space_explode mangled_type_sep #> hd
|
blanchet@43413
|
343 |
fun unmangled_const s =
|
blanchet@43413
|
344 |
let val ss = space_explode mangled_type_sep s in
|
blanchet@43413
|
345 |
(hd ss, map unmangled_type (tl ss))
|
blanchet@43413
|
346 |
end
|
blanchet@43413
|
347 |
|
blanchet@43858
|
348 |
fun introduce_proxies format type_sys =
|
blanchet@43439
|
349 |
let
|
blanchet@43858
|
350 |
fun intro top_level (CombApp (tm1, tm2)) =
|
blanchet@43858
|
351 |
CombApp (intro top_level tm1, intro false tm2)
|
blanchet@43858
|
352 |
| intro top_level (CombConst (name as (s, _), T, T_args)) =
|
blanchet@43441
|
353 |
(case proxify_const s of
|
blanchet@43858
|
354 |
SOME (_, proxy_base) =>
|
blanchet@43841
|
355 |
if top_level orelse is_setting_higher_order format type_sys then
|
blanchet@43841
|
356 |
case (top_level, s) of
|
blanchet@43841
|
357 |
(_, "c_False") => (`I tptp_false, [])
|
blanchet@43841
|
358 |
| (_, "c_True") => (`I tptp_true, [])
|
blanchet@43841
|
359 |
| (false, "c_Not") => (`I tptp_not, [])
|
blanchet@43841
|
360 |
| (false, "c_conj") => (`I tptp_and, [])
|
blanchet@43841
|
361 |
| (false, "c_disj") => (`I tptp_or, [])
|
blanchet@43841
|
362 |
| (false, "c_implies") => (`I tptp_implies, [])
|
blanchet@43841
|
363 |
| (false, s) =>
|
blanchet@43858
|
364 |
if is_tptp_equal s then (`I tptp_equal, [])
|
blanchet@43858
|
365 |
else (proxy_base |>> prefix const_prefix, T_args)
|
blanchet@43841
|
366 |
| _ => (name, [])
|
blanchet@43440
|
367 |
else
|
blanchet@43445
|
368 |
(proxy_base |>> prefix const_prefix, T_args)
|
blanchet@43445
|
369 |
| NONE => (name, T_args))
|
blanchet@43445
|
370 |
|> (fn (name, T_args) => CombConst (name, T, T_args))
|
blanchet@43858
|
371 |
| intro _ tm = tm
|
blanchet@43858
|
372 |
in intro true end
|
blanchet@43439
|
373 |
|
blanchet@43835
|
374 |
fun combformula_from_prop thy format type_sys eq_as_iff =
|
blanchet@38506
|
375 |
let
|
blanchet@43439
|
376 |
fun do_term bs t atomic_types =
|
blanchet@41388
|
377 |
combterm_from_term thy bs (Envir.eta_contract t)
|
blanchet@43835
|
378 |
|>> (introduce_proxies format type_sys #> AAtom)
|
blanchet@43439
|
379 |
||> union (op =) atomic_types
|
blanchet@38506
|
380 |
fun do_quant bs q s T t' =
|
blanchet@38743
|
381 |
let val s = Name.variant (map fst bs) s in
|
blanchet@38743
|
382 |
do_formula ((s, T) :: bs) t'
|
blanchet@43433
|
383 |
#>> mk_aquant q [(`make_bound_var s, SOME T)]
|
blanchet@38743
|
384 |
end
|
blanchet@38506
|
385 |
and do_conn bs c t1 t2 =
|
blanchet@38506
|
386 |
do_formula bs t1 ##>> do_formula bs t2
|
blanchet@43402
|
387 |
#>> uncurry (mk_aconn c)
|
blanchet@38506
|
388 |
and do_formula bs t =
|
blanchet@38506
|
389 |
case t of
|
blanchet@43402
|
390 |
@{const Not} $ t1 => do_formula bs t1 #>> mk_anot
|
blanchet@38506
|
391 |
| Const (@{const_name All}, _) $ Abs (s, T, t') =>
|
blanchet@38506
|
392 |
do_quant bs AForall s T t'
|
blanchet@38506
|
393 |
| Const (@{const_name Ex}, _) $ Abs (s, T, t') =>
|
blanchet@38506
|
394 |
do_quant bs AExists s T t'
|
haftmann@39028
|
395 |
| @{const HOL.conj} $ t1 $ t2 => do_conn bs AAnd t1 t2
|
haftmann@39028
|
396 |
| @{const HOL.disj} $ t1 $ t2 => do_conn bs AOr t1 t2
|
haftmann@39019
|
397 |
| @{const HOL.implies} $ t1 $ t2 => do_conn bs AImplies t1 t2
|
haftmann@39093
|
398 |
| Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _])) $ t1 $ t2 =>
|
blanchet@41388
|
399 |
if eq_as_iff then do_conn bs AIff t1 t2 else do_term bs t
|
blanchet@41388
|
400 |
| _ => do_term bs t
|
blanchet@38506
|
401 |
in do_formula [] end
|
blanchet@38506
|
402 |
|
blanchet@43615
|
403 |
fun presimplify_term ctxt =
|
blanchet@43615
|
404 |
Skip_Proof.make_thm (Proof_Context.theory_of ctxt)
|
blanchet@43615
|
405 |
#> Meson.presimplify ctxt
|
blanchet@43615
|
406 |
#> prop_of
|
blanchet@38506
|
407 |
|
wenzelm@41739
|
408 |
fun concealed_bound_name j = sledgehammer_weak_prefix ^ string_of_int j
|
blanchet@38506
|
409 |
fun conceal_bounds Ts t =
|
blanchet@38506
|
410 |
subst_bounds (map (Free o apfst concealed_bound_name)
|
blanchet@38506
|
411 |
(0 upto length Ts - 1 ~~ Ts), t)
|
blanchet@38506
|
412 |
fun reveal_bounds Ts =
|
blanchet@38506
|
413 |
subst_atomic (map (fn (j, T) => (Free (concealed_bound_name j, T), Bound j))
|
blanchet@38506
|
414 |
(0 upto length Ts - 1 ~~ Ts))
|
blanchet@38506
|
415 |
|
blanchet@43612
|
416 |
fun extensionalize_term ctxt t =
|
blanchet@43612
|
417 |
let val thy = Proof_Context.theory_of ctxt in
|
blanchet@43612
|
418 |
t |> cterm_of thy |> Meson.extensionalize_conv ctxt
|
blanchet@43612
|
419 |
|> prop_of |> Logic.dest_equals |> snd
|
blanchet@43612
|
420 |
end
|
blanchet@38831
|
421 |
|
blanchet@38506
|
422 |
fun introduce_combinators_in_term ctxt kind t =
|
wenzelm@43232
|
423 |
let val thy = Proof_Context.theory_of ctxt in
|
blanchet@38716
|
424 |
if Meson.is_fol_term thy t then
|
blanchet@38716
|
425 |
t
|
blanchet@38716
|
426 |
else
|
blanchet@38716
|
427 |
let
|
blanchet@38716
|
428 |
fun aux Ts t =
|
blanchet@38716
|
429 |
case t of
|
blanchet@38716
|
430 |
@{const Not} $ t1 => @{const Not} $ aux Ts t1
|
blanchet@38716
|
431 |
| (t0 as Const (@{const_name All}, _)) $ Abs (s, T, t') =>
|
blanchet@38716
|
432 |
t0 $ Abs (s, T, aux (T :: Ts) t')
|
blanchet@38890
|
433 |
| (t0 as Const (@{const_name All}, _)) $ t1 =>
|
blanchet@38890
|
434 |
aux Ts (t0 $ eta_expand Ts t1 1)
|
blanchet@38716
|
435 |
| (t0 as Const (@{const_name Ex}, _)) $ Abs (s, T, t') =>
|
blanchet@38716
|
436 |
t0 $ Abs (s, T, aux (T :: Ts) t')
|
blanchet@38890
|
437 |
| (t0 as Const (@{const_name Ex}, _)) $ t1 =>
|
blanchet@38890
|
438 |
aux Ts (t0 $ eta_expand Ts t1 1)
|
haftmann@39028
|
439 |
| (t0 as @{const HOL.conj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
|
haftmann@39028
|
440 |
| (t0 as @{const HOL.disj}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
|
haftmann@39019
|
441 |
| (t0 as @{const HOL.implies}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
|
haftmann@39093
|
442 |
| (t0 as Const (@{const_name HOL.eq}, Type (_, [@{typ bool}, _])))
|
blanchet@38716
|
443 |
$ t1 $ t2 =>
|
blanchet@38716
|
444 |
t0 $ aux Ts t1 $ aux Ts t2
|
blanchet@38716
|
445 |
| _ => if not (exists_subterm (fn Abs _ => true | _ => false) t) then
|
blanchet@38716
|
446 |
t
|
blanchet@38716
|
447 |
else
|
blanchet@38716
|
448 |
t |> conceal_bounds Ts
|
blanchet@38716
|
449 |
|> Envir.eta_contract
|
blanchet@38716
|
450 |
|> cterm_of thy
|
blanchet@40071
|
451 |
|> Meson_Clausify.introduce_combinators_in_cterm
|
blanchet@38716
|
452 |
|> prop_of |> Logic.dest_equals |> snd
|
blanchet@38716
|
453 |
|> reveal_bounds Ts
|
blanchet@39616
|
454 |
val (t, ctxt') = Variable.import_terms true [t] ctxt |>> the_single
|
blanchet@38716
|
455 |
in t |> aux [] |> singleton (Variable.export_terms ctxt' ctxt) end
|
blanchet@38716
|
456 |
handle THM _ =>
|
blanchet@38716
|
457 |
(* A type variable of sort "{}" will make abstraction fail. *)
|
blanchet@38836
|
458 |
if kind = Conjecture then HOLogic.false_const
|
blanchet@38836
|
459 |
else HOLogic.true_const
|
blanchet@38716
|
460 |
end
|
blanchet@38506
|
461 |
|
blanchet@38506
|
462 |
(* Metis's use of "resolve_tac" freezes the schematic variables. We simulate the
|
blanchet@43224
|
463 |
same in Sledgehammer to prevent the discovery of unreplayable proofs. *)
|
blanchet@38506
|
464 |
fun freeze_term t =
|
blanchet@38506
|
465 |
let
|
blanchet@38506
|
466 |
fun aux (t $ u) = aux t $ aux u
|
blanchet@38506
|
467 |
| aux (Abs (s, T, t)) = Abs (s, T, aux t)
|
blanchet@38506
|
468 |
| aux (Var ((s, i), T)) =
|
blanchet@38506
|
469 |
Free (sledgehammer_weak_prefix ^ s ^ "_" ^ string_of_int i, T)
|
blanchet@38506
|
470 |
| aux t = t
|
blanchet@38506
|
471 |
in t |> exists_subterm is_Var t ? aux end
|
blanchet@38506
|
472 |
|
blanchet@40445
|
473 |
(* making fact and conjecture formulas *)
|
blanchet@43835
|
474 |
fun make_formula ctxt format type_sys eq_as_iff presimp name loc kind t =
|
blanchet@38506
|
475 |
let
|
wenzelm@43232
|
476 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@38831
|
477 |
val t = t |> Envir.beta_eta_contract
|
blanchet@43785
|
478 |
|> transform_elim_prop
|
blanchet@41459
|
479 |
|> Object_Logic.atomize_term thy
|
blanchet@43434
|
480 |
val need_trueprop = (fastype_of t = @{typ bool})
|
blanchet@38890
|
481 |
val t = t |> need_trueprop ? HOLogic.mk_Trueprop
|
blanchet@43607
|
482 |
|> Raw_Simplifier.rewrite_term thy
|
blanchet@43607
|
483 |
(Meson.unfold_set_const_simps ctxt) []
|
blanchet@43612
|
484 |
|> extensionalize_term ctxt
|
blanchet@43615
|
485 |
|> presimp ? presimplify_term ctxt
|
blanchet@38506
|
486 |
|> perhaps (try (HOLogic.dest_Trueprop))
|
blanchet@38506
|
487 |
|> introduce_combinators_in_term ctxt kind
|
blanchet@38836
|
488 |
|> kind <> Axiom ? freeze_term
|
blanchet@43803
|
489 |
val (combformula, atomic_types) =
|
blanchet@43835
|
490 |
combformula_from_prop thy format type_sys eq_as_iff t []
|
blanchet@38506
|
491 |
in
|
blanchet@43511
|
492 |
{name = name, locality = loc, kind = kind, combformula = combformula,
|
blanchet@43433
|
493 |
atomic_types = atomic_types}
|
blanchet@38506
|
494 |
end
|
blanchet@38506
|
495 |
|
blanchet@43835
|
496 |
fun make_fact ctxt format type_sys keep_trivial eq_as_iff presimp
|
blanchet@43835
|
497 |
((name, loc), t) =
|
blanchet@43803
|
498 |
case (keep_trivial,
|
blanchet@43835
|
499 |
make_formula ctxt format type_sys eq_as_iff presimp name loc Axiom t) of
|
blanchet@43842
|
500 |
(false, formula as {combformula = AAtom (CombConst ((s, _), _, _)), ...}) =>
|
blanchet@43842
|
501 |
if s = tptp_true then NONE else SOME formula
|
blanchet@42861
|
502 |
| (_, formula) => SOME formula
|
blanchet@43432
|
503 |
|
blanchet@43835
|
504 |
fun make_conjecture ctxt format prem_kind type_sys ts =
|
blanchet@38836
|
505 |
let val last = length ts - 1 in
|
blanchet@43580
|
506 |
map2 (fn j => fn t =>
|
blanchet@43580
|
507 |
let
|
blanchet@43580
|
508 |
val (kind, maybe_negate) =
|
blanchet@43580
|
509 |
if j = last then
|
blanchet@43580
|
510 |
(Conjecture, I)
|
blanchet@43580
|
511 |
else
|
blanchet@43580
|
512 |
(prem_kind,
|
blanchet@43580
|
513 |
if prem_kind = Conjecture then update_combformula mk_anot
|
blanchet@43580
|
514 |
else I)
|
blanchet@43580
|
515 |
in
|
blanchet@43835
|
516 |
t |> make_formula ctxt format type_sys true true
|
blanchet@43835
|
517 |
(string_of_int j) General kind
|
blanchet@43803
|
518 |
|> maybe_negate
|
blanchet@43580
|
519 |
end)
|
blanchet@38836
|
520 |
(0 upto last) ts
|
blanchet@38836
|
521 |
end
|
blanchet@38506
|
522 |
|
blanchet@43552
|
523 |
(** Finite and infinite type inference **)
|
blanchet@43552
|
524 |
|
blanchet@43755
|
525 |
fun deep_freeze_atyp (TVar (_, S)) = TFree ("v", S)
|
blanchet@43755
|
526 |
| deep_freeze_atyp T = T
|
blanchet@43755
|
527 |
val deep_freeze_type = map_atyps deep_freeze_atyp
|
blanchet@43755
|
528 |
|
blanchet@43552
|
529 |
(* Finite types such as "unit", "bool", "bool * bool", and "bool => bool" are
|
blanchet@43552
|
530 |
dangerous because their "exhaust" properties can easily lead to unsound ATP
|
blanchet@43552
|
531 |
proofs. On the other hand, all HOL infinite types can be given the same
|
blanchet@43552
|
532 |
models in first-order logic (via Löwenheim-Skolem). *)
|
blanchet@43552
|
533 |
|
blanchet@43755
|
534 |
fun should_encode_type ctxt (nonmono_Ts as _ :: _) _ T =
|
blanchet@43755
|
535 |
exists (curry (type_instance ctxt) (deep_freeze_type T)) nonmono_Ts
|
blanchet@43707
|
536 |
| should_encode_type _ _ All_Types _ = true
|
blanchet@43552
|
537 |
| should_encode_type ctxt _ Finite_Types T = is_type_surely_finite ctxt T
|
blanchet@43552
|
538 |
| should_encode_type _ _ _ _ = false
|
blanchet@43552
|
539 |
|
blanchet@43708
|
540 |
fun should_predicate_on_type ctxt nonmono_Ts (Preds (_, level, heaviness))
|
blanchet@43705
|
541 |
should_predicate_on_var T =
|
blanchet@43747
|
542 |
(heaviness = Heavy orelse should_predicate_on_var ()) andalso
|
blanchet@43747
|
543 |
should_encode_type ctxt nonmono_Ts level T
|
blanchet@43705
|
544 |
| should_predicate_on_type _ _ _ _ _ = false
|
blanchet@43552
|
545 |
|
blanchet@43707
|
546 |
fun is_var_or_bound_var (CombConst ((s, _), _, _)) =
|
blanchet@43707
|
547 |
String.isPrefix bound_var_prefix s
|
blanchet@43707
|
548 |
| is_var_or_bound_var (CombVar _) = true
|
blanchet@43707
|
549 |
| is_var_or_bound_var _ = false
|
blanchet@43707
|
550 |
|
blanchet@43700
|
551 |
datatype tag_site = Top_Level | Eq_Arg | Elsewhere
|
blanchet@43700
|
552 |
|
blanchet@43700
|
553 |
fun should_tag_with_type _ _ _ Top_Level _ _ = false
|
blanchet@43708
|
554 |
| should_tag_with_type ctxt nonmono_Ts (Tags (_, level, heaviness)) site u T =
|
blanchet@43708
|
555 |
(case heaviness of
|
blanchet@43708
|
556 |
Heavy => should_encode_type ctxt nonmono_Ts level T
|
blanchet@43708
|
557 |
| Light =>
|
blanchet@43707
|
558 |
case (site, is_var_or_bound_var u) of
|
blanchet@43707
|
559 |
(Eq_Arg, true) => should_encode_type ctxt nonmono_Ts level T
|
blanchet@43700
|
560 |
| _ => false)
|
blanchet@43700
|
561 |
| should_tag_with_type _ _ _ _ _ _ = false
|
blanchet@43552
|
562 |
|
blanchet@43835
|
563 |
fun homogenized_type ctxt nonmono_Ts level =
|
blanchet@43835
|
564 |
let
|
blanchet@43835
|
565 |
val should_encode = should_encode_type ctxt nonmono_Ts level
|
blanchet@43835
|
566 |
fun homo 0 T = if should_encode T then T else homo_infinite_type
|
blanchet@43835
|
567 |
| homo ary (Type (@{type_name fun}, [T1, T2])) =
|
blanchet@43835
|
568 |
homo 0 T1 --> homo (ary - 1) T2
|
blanchet@43835
|
569 |
| homo _ _ = raise Fail "expected function type"
|
blanchet@43835
|
570 |
in homo end
|
blanchet@43552
|
571 |
|
blanchet@43444
|
572 |
(** "hBOOL" and "hAPP" **)
|
blanchet@41561
|
573 |
|
blanchet@43445
|
574 |
type sym_info =
|
blanchet@43905
|
575 |
{pred_sym : bool, min_ary : int, max_ary : int, types : typ list}
|
blanchet@43434
|
576 |
|
blanchet@43905
|
577 |
fun add_combterm_syms_to_table ctxt explicit_apply =
|
blanchet@43429
|
578 |
let
|
blanchet@43905
|
579 |
fun consider_var_arity const_T var_T max_ary =
|
blanchet@43905
|
580 |
let
|
blanchet@43905
|
581 |
fun iter ary T =
|
blanchet@43905
|
582 |
if ary = max_ary orelse type_instance ctxt (var_T, T) then ary
|
blanchet@43905
|
583 |
else iter (ary + 1) (range_type T)
|
blanchet@43905
|
584 |
in iter 0 const_T end
|
blanchet@43905
|
585 |
fun add top_level tm (accum as (ho_var_Ts, sym_tab)) =
|
blanchet@43429
|
586 |
let val (head, args) = strip_combterm_comb tm in
|
blanchet@43429
|
587 |
(case head of
|
blanchet@43434
|
588 |
CombConst ((s, _), T, _) =>
|
blanchet@43429
|
589 |
if String.isPrefix bound_var_prefix s then
|
blanchet@43905
|
590 |
if explicit_apply = NONE andalso can dest_funT T then
|
blanchet@43905
|
591 |
let
|
blanchet@43905
|
592 |
fun repair_min_arity {pred_sym, min_ary, max_ary, types} =
|
blanchet@43905
|
593 |
{pred_sym = pred_sym,
|
blanchet@43905
|
594 |
min_ary =
|
blanchet@43905
|
595 |
fold (fn T' => consider_var_arity T' T) types min_ary,
|
blanchet@43905
|
596 |
max_ary = max_ary, types = types}
|
blanchet@43905
|
597 |
val ho_var_Ts' = ho_var_Ts |> insert_type ctxt I T
|
blanchet@43905
|
598 |
in
|
blanchet@43905
|
599 |
if pointer_eq (ho_var_Ts', ho_var_Ts) then accum
|
blanchet@43905
|
600 |
else (ho_var_Ts', Symtab.map (K repair_min_arity) sym_tab)
|
blanchet@43905
|
601 |
end
|
blanchet@43905
|
602 |
else
|
blanchet@43905
|
603 |
accum
|
blanchet@43429
|
604 |
else
|
blanchet@43905
|
605 |
let
|
blanchet@43905
|
606 |
val ary = length args
|
blanchet@43905
|
607 |
in
|
blanchet@43905
|
608 |
(ho_var_Ts,
|
blanchet@43905
|
609 |
case Symtab.lookup sym_tab s of
|
blanchet@43905
|
610 |
SOME {pred_sym, min_ary, max_ary, types} =>
|
blanchet@43905
|
611 |
let
|
blanchet@43905
|
612 |
val types' = types |> insert_type ctxt I T
|
blanchet@43905
|
613 |
val min_ary =
|
blanchet@43905
|
614 |
if is_some explicit_apply orelse
|
blanchet@43905
|
615 |
pointer_eq (types', types) then
|
blanchet@43905
|
616 |
min_ary
|
blanchet@43905
|
617 |
else
|
blanchet@43905
|
618 |
fold (consider_var_arity T) ho_var_Ts min_ary
|
blanchet@43905
|
619 |
in
|
blanchet@43905
|
620 |
Symtab.update (s, {pred_sym = pred_sym andalso top_level,
|
blanchet@43905
|
621 |
min_ary = Int.min (ary, min_ary),
|
blanchet@43905
|
622 |
max_ary = Int.max (ary, max_ary),
|
blanchet@43905
|
623 |
types = types'})
|
blanchet@43905
|
624 |
sym_tab
|
blanchet@43905
|
625 |
end
|
blanchet@43905
|
626 |
| NONE =>
|
blanchet@43905
|
627 |
let
|
blanchet@43905
|
628 |
val min_ary =
|
blanchet@43905
|
629 |
case explicit_apply of
|
blanchet@43905
|
630 |
SOME true => 0
|
blanchet@43905
|
631 |
| SOME false => ary
|
blanchet@43905
|
632 |
| NONE => fold (consider_var_arity T) ho_var_Ts ary
|
blanchet@43905
|
633 |
in
|
blanchet@43905
|
634 |
Symtab.update_new (s, {pred_sym = top_level,
|
blanchet@43905
|
635 |
min_ary = min_ary, max_ary = ary,
|
blanchet@43905
|
636 |
types = [T]})
|
blanchet@43905
|
637 |
sym_tab
|
blanchet@43905
|
638 |
end)
|
blanchet@43905
|
639 |
end
|
blanchet@43905
|
640 |
| _ => accum)
|
blanchet@43905
|
641 |
|> fold (add false) args
|
blanchet@43429
|
642 |
end
|
blanchet@43905
|
643 |
in add true end
|
blanchet@43905
|
644 |
fun add_fact_syms_to_table ctxt explicit_apply =
|
blanchet@43905
|
645 |
fact_lift (formula_fold NONE
|
blanchet@43905
|
646 |
(K (add_combterm_syms_to_table ctxt explicit_apply)))
|
blanchet@38506
|
647 |
|
blanchet@43546
|
648 |
val default_sym_table_entries : (string * sym_info) list =
|
blanchet@43905
|
649 |
[(tptp_equal, {pred_sym = true, min_ary = 2, max_ary = 2, types = []}),
|
blanchet@43905
|
650 |
(tptp_old_equal, {pred_sym = true, min_ary = 2, max_ary = 2, types = []}),
|
blanchet@43807
|
651 |
(make_fixed_const predicator_name,
|
blanchet@43905
|
652 |
{pred_sym = true, min_ary = 1, max_ary = 1, types = []})] @
|
blanchet@43439
|
653 |
([tptp_false, tptp_true]
|
blanchet@43905
|
654 |
|> map (rpair {pred_sym = true, min_ary = 0, max_ary = 0, types = []}))
|
blanchet@41388
|
655 |
|
blanchet@43905
|
656 |
fun sym_table_for_facts ctxt explicit_apply facts =
|
blanchet@43905
|
657 |
Symtab.empty
|
blanchet@43905
|
658 |
|> fold Symtab.default default_sym_table_entries
|
blanchet@43905
|
659 |
|> pair [] |> fold (add_fact_syms_to_table ctxt explicit_apply) facts |> snd
|
blanchet@38506
|
660 |
|
blanchet@43429
|
661 |
fun min_arity_of sym_tab s =
|
blanchet@43429
|
662 |
case Symtab.lookup sym_tab s of
|
blanchet@43445
|
663 |
SOME ({min_ary, ...} : sym_info) => min_ary
|
blanchet@43429
|
664 |
| NONE =>
|
blanchet@43429
|
665 |
case strip_prefix_and_unascii const_prefix s of
|
blanchet@43418
|
666 |
SOME s =>
|
blanchet@43441
|
667 |
let val s = s |> unmangled_const_name |> invert_const in
|
blanchet@43807
|
668 |
if s = predicator_name then 1
|
blanchet@43807
|
669 |
else if s = app_op_name then 2
|
blanchet@43807
|
670 |
else if s = type_pred_name then 1
|
blanchet@43428
|
671 |
else 0
|
blanchet@43418
|
672 |
end
|
blanchet@38506
|
673 |
| NONE => 0
|
blanchet@38506
|
674 |
|
blanchet@38506
|
675 |
(* True if the constant ever appears outside of the top-level position in
|
blanchet@38506
|
676 |
literals, or if it appears with different arities (e.g., because of different
|
blanchet@38506
|
677 |
type instantiations). If false, the constant always receives all of its
|
blanchet@38506
|
678 |
arguments and is used as a predicate. *)
|
blanchet@43429
|
679 |
fun is_pred_sym sym_tab s =
|
blanchet@43429
|
680 |
case Symtab.lookup sym_tab s of
|
blanchet@43445
|
681 |
SOME ({pred_sym, min_ary, max_ary, ...} : sym_info) =>
|
blanchet@43445
|
682 |
pred_sym andalso min_ary = max_ary
|
blanchet@43429
|
683 |
| NONE => false
|
blanchet@38506
|
684 |
|
blanchet@43439
|
685 |
val predicator_combconst =
|
blanchet@43807
|
686 |
CombConst (`make_fixed_const predicator_name, @{typ "bool => bool"}, [])
|
blanchet@43439
|
687 |
fun predicator tm = CombApp (predicator_combconst, tm)
|
blanchet@38506
|
688 |
|
blanchet@43439
|
689 |
fun introduce_predicators_in_combterm sym_tab tm =
|
blanchet@43413
|
690 |
case strip_combterm_comb tm of
|
blanchet@43413
|
691 |
(CombConst ((s, _), _, _), _) =>
|
blanchet@43439
|
692 |
if is_pred_sym sym_tab s then tm else predicator tm
|
blanchet@43439
|
693 |
| _ => predicator tm
|
blanchet@38506
|
694 |
|
blanchet@43415
|
695 |
fun list_app head args = fold (curry (CombApp o swap)) args head
|
blanchet@38506
|
696 |
|
blanchet@43415
|
697 |
fun explicit_app arg head =
|
blanchet@43415
|
698 |
let
|
blanchet@43433
|
699 |
val head_T = combtyp_of head
|
blanchet@43563
|
700 |
val (arg_T, res_T) = dest_funT head_T
|
blanchet@43415
|
701 |
val explicit_app =
|
blanchet@43807
|
702 |
CombConst (`make_fixed_const app_op_name, head_T --> head_T,
|
blanchet@43563
|
703 |
[arg_T, res_T])
|
blanchet@43415
|
704 |
in list_app explicit_app [head, arg] end
|
blanchet@43415
|
705 |
fun list_explicit_app head args = fold explicit_app args head
|
blanchet@43415
|
706 |
|
blanchet@43436
|
707 |
fun introduce_explicit_apps_in_combterm sym_tab =
|
blanchet@43415
|
708 |
let
|
blanchet@43415
|
709 |
fun aux tm =
|
blanchet@43415
|
710 |
case strip_combterm_comb tm of
|
blanchet@43415
|
711 |
(head as CombConst ((s, _), _, _), args) =>
|
blanchet@43415
|
712 |
args |> map aux
|
blanchet@43428
|
713 |
|> chop (min_arity_of sym_tab s)
|
blanchet@43415
|
714 |
|>> list_app head
|
blanchet@43415
|
715 |
|-> list_explicit_app
|
blanchet@43415
|
716 |
| (head, args) => list_explicit_app head (map aux args)
|
blanchet@43415
|
717 |
in aux end
|
blanchet@43415
|
718 |
|
blanchet@43618
|
719 |
fun chop_fun 0 T = ([], T)
|
blanchet@43618
|
720 |
| chop_fun n (Type (@{type_name fun}, [dom_T, ran_T])) =
|
blanchet@43618
|
721 |
chop_fun (n - 1) ran_T |>> cons dom_T
|
blanchet@43618
|
722 |
| chop_fun _ _ = raise Fail "unexpected non-function"
|
blanchet@43618
|
723 |
|
blanchet@43651
|
724 |
fun filter_type_args _ _ _ [] = []
|
blanchet@43651
|
725 |
| filter_type_args thy s arity T_args =
|
blanchet@43705
|
726 |
let
|
blanchet@43705
|
727 |
(* will throw "TYPE" for pseudo-constants *)
|
blanchet@43807
|
728 |
val U = if s = app_op_name then
|
blanchet@43705
|
729 |
@{typ "('a => 'b) => 'a => 'b"} |> Logic.varifyT_global
|
blanchet@43705
|
730 |
else
|
blanchet@43705
|
731 |
s |> Sign.the_const_type thy
|
blanchet@43705
|
732 |
in
|
blanchet@43652
|
733 |
case Term.add_tvarsT (U |> chop_fun arity |> snd) [] of
|
blanchet@43652
|
734 |
[] => []
|
blanchet@43652
|
735 |
| res_U_vars =>
|
blanchet@43652
|
736 |
let val U_args = (s, U) |> Sign.const_typargs thy in
|
blanchet@43652
|
737 |
U_args ~~ T_args
|
blanchet@43652
|
738 |
|> map_filter (fn (U, T) =>
|
blanchet@43652
|
739 |
if member (op =) res_U_vars (dest_TVar U) then
|
blanchet@43652
|
740 |
SOME T
|
blanchet@43652
|
741 |
else
|
blanchet@43652
|
742 |
NONE)
|
blanchet@43652
|
743 |
end
|
blanchet@43651
|
744 |
end
|
blanchet@43651
|
745 |
handle TYPE _ => T_args
|
blanchet@43618
|
746 |
|
blanchet@43835
|
747 |
fun enforce_type_arg_policy_in_combterm ctxt nonmono_Ts type_sys =
|
blanchet@43618
|
748 |
let
|
blanchet@43618
|
749 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@43618
|
750 |
fun aux arity (CombApp (tm1, tm2)) =
|
blanchet@43618
|
751 |
CombApp (aux (arity + 1) tm1, aux 0 tm2)
|
blanchet@43618
|
752 |
| aux arity (CombConst (name as (s, _), T, T_args)) =
|
blanchet@43571
|
753 |
let
|
blanchet@43571
|
754 |
val level = level_of_type_sys type_sys
|
blanchet@43571
|
755 |
val (T, T_args) =
|
blanchet@43571
|
756 |
(* Aggressively merge most "hAPPs" if the type system is unsound
|
blanchet@43571
|
757 |
anyway, by distinguishing overloads only on the homogenized
|
blanchet@43708
|
758 |
result type. Don't do it for lightweight type systems, though,
|
blanchet@43708
|
759 |
since it leads to too many unsound proofs. *)
|
blanchet@43807
|
760 |
if s = const_prefix ^ app_op_name andalso
|
blanchet@43591
|
761 |
length T_args = 2 andalso
|
blanchet@43707
|
762 |
not (is_type_sys_virtually_sound type_sys) andalso
|
blanchet@43708
|
763 |
heaviness_of_type_sys type_sys = Heavy then
|
blanchet@43835
|
764 |
T_args |> map (homogenized_type ctxt nonmono_Ts level 0)
|
blanchet@43571
|
765 |
|> (fn Ts => let val T = hd Ts --> nth Ts 1 in
|
blanchet@43702
|
766 |
(T --> T, tl Ts)
|
blanchet@43571
|
767 |
end)
|
blanchet@43571
|
768 |
else
|
blanchet@43571
|
769 |
(T, T_args)
|
blanchet@43571
|
770 |
in
|
blanchet@43571
|
771 |
(case strip_prefix_and_unascii const_prefix s of
|
blanchet@43571
|
772 |
NONE => (name, T_args)
|
blanchet@43571
|
773 |
| SOME s'' =>
|
blanchet@43618
|
774 |
let
|
blanchet@43618
|
775 |
val s'' = invert_const s''
|
blanchet@43702
|
776 |
fun filtered_T_args false = T_args
|
blanchet@43702
|
777 |
| filtered_T_args true = filter_type_args thy s'' arity T_args
|
blanchet@43618
|
778 |
in
|
blanchet@43571
|
779 |
case type_arg_policy type_sys s'' of
|
blanchet@43702
|
780 |
Explicit_Type_Args drop_args =>
|
blanchet@43702
|
781 |
(name, filtered_T_args drop_args)
|
blanchet@43702
|
782 |
| Mangled_Type_Args drop_args =>
|
blanchet@43835
|
783 |
(mangled_const_name (filtered_T_args drop_args) name, [])
|
blanchet@43618
|
784 |
| No_Type_Args => (name, [])
|
blanchet@43571
|
785 |
end)
|
blanchet@43571
|
786 |
|> (fn (name, T_args) => CombConst (name, T, T_args))
|
blanchet@43571
|
787 |
end
|
blanchet@43618
|
788 |
| aux _ tm = tm
|
blanchet@43618
|
789 |
in aux 0 end
|
blanchet@43444
|
790 |
|
blanchet@43803
|
791 |
fun repair_combterm ctxt format nonmono_Ts type_sys sym_tab =
|
blanchet@43835
|
792 |
not (is_setting_higher_order format type_sys)
|
blanchet@43835
|
793 |
? (introduce_explicit_apps_in_combterm sym_tab
|
blanchet@43835
|
794 |
#> introduce_predicators_in_combterm sym_tab)
|
blanchet@43835
|
795 |
#> enforce_type_arg_policy_in_combterm ctxt nonmono_Ts type_sys
|
blanchet@43803
|
796 |
fun repair_fact ctxt format nonmono_Ts type_sys sym_tab =
|
blanchet@43571
|
797 |
update_combformula (formula_map
|
blanchet@43803
|
798 |
(repair_combterm ctxt format nonmono_Ts type_sys sym_tab))
|
blanchet@43444
|
799 |
|
blanchet@43444
|
800 |
(** Helper facts **)
|
blanchet@43444
|
801 |
|
blanchet@43444
|
802 |
fun ti_ti_helper_fact () =
|
blanchet@43444
|
803 |
let
|
blanchet@43444
|
804 |
fun var s = ATerm (`I s, [])
|
blanchet@43460
|
805 |
fun tag tm = ATerm (`make_fixed_const type_tag_name, [var "X", tm])
|
blanchet@43444
|
806 |
in
|
blanchet@43483
|
807 |
Formula (helper_prefix ^ "ti_ti", Axiom,
|
blanchet@43841
|
808 |
AAtom (ATerm (`I tptp_equal, [tag (tag (var "Y")), tag (var "Y")]))
|
blanchet@43748
|
809 |
|> close_formula_universally, simp_info, NONE)
|
blanchet@43444
|
810 |
end
|
blanchet@43444
|
811 |
|
blanchet@43905
|
812 |
fun helper_facts_for_sym ctxt format type_sys (s, {types, ...} : sym_info) =
|
blanchet@43444
|
813 |
case strip_prefix_and_unascii const_prefix s of
|
blanchet@43444
|
814 |
SOME mangled_s =>
|
blanchet@43444
|
815 |
let
|
blanchet@43444
|
816 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@43444
|
817 |
val unmangled_s = mangled_s |> unmangled_const_name
|
blanchet@43764
|
818 |
fun dub_and_inst c needs_fairly_sound (th, j) =
|
blanchet@43750
|
819 |
((c ^ "_" ^ string_of_int j ^
|
blanchet@43764
|
820 |
(if needs_fairly_sound then typed_helper_suffix
|
blanchet@43750
|
821 |
else untyped_helper_suffix),
|
blanchet@43750
|
822 |
General),
|
blanchet@43444
|
823 |
let val t = th |> prop_of in
|
blanchet@43618
|
824 |
t |> ((case general_type_arg_policy type_sys of
|
blanchet@43618
|
825 |
Mangled_Type_Args _ => true
|
blanchet@43618
|
826 |
| _ => false) andalso
|
blanchet@43444
|
827 |
not (null (Term.hidden_polymorphism t)))
|
blanchet@43905
|
828 |
? (case types of
|
blanchet@43905
|
829 |
[T] => specialize_type thy (invert_const unmangled_s, T)
|
blanchet@43905
|
830 |
| _ => I)
|
blanchet@43444
|
831 |
end)
|
blanchet@43444
|
832 |
fun make_facts eq_as_iff =
|
blanchet@43835
|
833 |
map_filter (make_fact ctxt format type_sys false eq_as_iff false)
|
blanchet@43764
|
834 |
val fairly_sound = is_type_sys_fairly_sound type_sys
|
blanchet@43444
|
835 |
in
|
blanchet@43444
|
836 |
metis_helpers
|
blanchet@43765
|
837 |
|> maps (fn (metis_s, (needs_fairly_sound, ths)) =>
|
blanchet@43444
|
838 |
if metis_s <> unmangled_s orelse
|
blanchet@43765
|
839 |
(needs_fairly_sound andalso not fairly_sound) then
|
blanchet@43444
|
840 |
[]
|
blanchet@43444
|
841 |
else
|
blanchet@43444
|
842 |
ths ~~ (1 upto length ths)
|
blanchet@43764
|
843 |
|> map (dub_and_inst mangled_s needs_fairly_sound)
|
blanchet@43764
|
844 |
|> make_facts (not needs_fairly_sound))
|
blanchet@43444
|
845 |
end
|
blanchet@43444
|
846 |
| NONE => []
|
blanchet@43803
|
847 |
fun helper_facts_for_sym_table ctxt format type_sys sym_tab =
|
blanchet@43803
|
848 |
Symtab.fold_rev (append o helper_facts_for_sym ctxt format type_sys) sym_tab
|
blanchet@43803
|
849 |
[]
|
blanchet@43444
|
850 |
|
blanchet@43835
|
851 |
fun translate_atp_fact ctxt format type_sys keep_trivial =
|
blanchet@43835
|
852 |
`(make_fact ctxt format type_sys keep_trivial true true o apsnd prop_of)
|
blanchet@43444
|
853 |
|
blanchet@43803
|
854 |
fun translate_formulas ctxt format prem_kind type_sys hyp_ts concl_t
|
blanchet@43803
|
855 |
rich_facts =
|
blanchet@43444
|
856 |
let
|
blanchet@43444
|
857 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@43444
|
858 |
val fact_ts = map (prop_of o snd o snd) rich_facts
|
blanchet@43444
|
859 |
val (facts, fact_names) =
|
blanchet@43444
|
860 |
rich_facts
|
blanchet@43444
|
861 |
|> map_filter (fn (NONE, _) => NONE
|
blanchet@43444
|
862 |
| (SOME fact, (name, _)) => SOME (fact, name))
|
blanchet@43444
|
863 |
|> ListPair.unzip
|
blanchet@43444
|
864 |
(* Remove existing facts from the conjecture, as this can dramatically
|
blanchet@43444
|
865 |
boost an ATP's performance (for some reason). *)
|
blanchet@43444
|
866 |
val hyp_ts = hyp_ts |> filter_out (member (op aconv) fact_ts)
|
blanchet@43444
|
867 |
val goal_t = Logic.list_implies (hyp_ts, concl_t)
|
blanchet@43444
|
868 |
val all_ts = goal_t :: fact_ts
|
blanchet@43444
|
869 |
val subs = tfree_classes_of_terms all_ts
|
blanchet@43444
|
870 |
val supers = tvar_classes_of_terms all_ts
|
blanchet@43444
|
871 |
val tycons = type_consts_of_terms thy all_ts
|
blanchet@43835
|
872 |
val conjs =
|
blanchet@43835
|
873 |
hyp_ts @ [concl_t] |> make_conjecture ctxt format prem_kind type_sys
|
blanchet@43444
|
874 |
val (supers', arity_clauses) =
|
blanchet@43460
|
875 |
if level_of_type_sys type_sys = No_Types then ([], [])
|
blanchet@43444
|
876 |
else make_arity_clauses thy tycons supers
|
blanchet@43444
|
877 |
val class_rel_clauses = make_class_rel_clauses thy subs supers'
|
blanchet@43444
|
878 |
in
|
blanchet@43444
|
879 |
(fact_names |> map single, (conjs, facts, class_rel_clauses, arity_clauses))
|
blanchet@43444
|
880 |
end
|
blanchet@43444
|
881 |
|
blanchet@43444
|
882 |
fun fo_literal_from_type_literal (TyLitVar (class, name)) =
|
blanchet@43444
|
883 |
(true, ATerm (class, [ATerm (name, [])]))
|
blanchet@43444
|
884 |
| fo_literal_from_type_literal (TyLitFree (class, name)) =
|
blanchet@43444
|
885 |
(true, ATerm (class, [ATerm (name, [])]))
|
blanchet@43444
|
886 |
|
blanchet@43444
|
887 |
fun formula_from_fo_literal (pos, t) = AAtom t |> not pos ? mk_anot
|
blanchet@43444
|
888 |
|
blanchet@43835
|
889 |
fun type_pred_combterm ctxt nonmono_Ts type_sys T tm =
|
blanchet@43807
|
890 |
CombApp (CombConst (`make_fixed_const type_pred_name, T --> @{typ bool}, [T])
|
blanchet@43835
|
891 |
|> enforce_type_arg_policy_in_combterm ctxt nonmono_Ts type_sys,
|
blanchet@43444
|
892 |
tm)
|
blanchet@43444
|
893 |
|
blanchet@43747
|
894 |
fun var_occurs_positively_naked_in_term _ (SOME false) _ accum = accum
|
blanchet@43747
|
895 |
| var_occurs_positively_naked_in_term name _ (ATerm ((s, _), tms)) accum =
|
blanchet@43841
|
896 |
accum orelse (is_tptp_equal s andalso member (op =) tms (ATerm (name, [])))
|
blanchet@43747
|
897 |
fun is_var_nonmonotonic_in_formula _ _ (SOME false) _ = false
|
blanchet@43747
|
898 |
| is_var_nonmonotonic_in_formula pos phi _ name =
|
blanchet@43747
|
899 |
formula_fold pos (var_occurs_positively_naked_in_term name) phi false
|
blanchet@43705
|
900 |
|
blanchet@43835
|
901 |
fun mk_const_aterm x T_args args =
|
blanchet@43835
|
902 |
ATerm (x, map (fo_term_from_typ false) T_args @ args)
|
blanchet@43835
|
903 |
|
blanchet@43803
|
904 |
fun tag_with_type ctxt format nonmono_Ts type_sys T tm =
|
blanchet@43700
|
905 |
CombConst (`make_fixed_const type_tag_name, T --> T, [T])
|
blanchet@43835
|
906 |
|> enforce_type_arg_policy_in_combterm ctxt nonmono_Ts type_sys
|
blanchet@43803
|
907 |
|> term_from_combterm ctxt format nonmono_Ts type_sys Top_Level
|
blanchet@43700
|
908 |
|> (fn ATerm (s, tms) => ATerm (s, tms @ [tm]))
|
blanchet@43803
|
909 |
and term_from_combterm ctxt format nonmono_Ts type_sys =
|
blanchet@43444
|
910 |
let
|
blanchet@43803
|
911 |
fun aux site u =
|
blanchet@43803
|
912 |
let
|
blanchet@43803
|
913 |
val (head, args) = strip_combterm_comb u
|
blanchet@43803
|
914 |
val (x as (s, _), T_args) =
|
blanchet@43803
|
915 |
case head of
|
blanchet@43803
|
916 |
CombConst (name, _, T_args) => (name, T_args)
|
blanchet@43803
|
917 |
| CombVar (name, _) => (name, [])
|
blanchet@43803
|
918 |
| CombApp _ => raise Fail "impossible \"CombApp\""
|
blanchet@43841
|
919 |
val arg_site = if site = Top_Level andalso is_tptp_equal s then Eq_Arg
|
blanchet@43803
|
920 |
else Elsewhere
|
blanchet@43835
|
921 |
val t = mk_const_aterm x T_args (map (aux arg_site) args)
|
blanchet@43803
|
922 |
val T = combtyp_of u
|
blanchet@43803
|
923 |
in
|
blanchet@43803
|
924 |
t |> (if should_tag_with_type ctxt nonmono_Ts type_sys site u T then
|
blanchet@43803
|
925 |
tag_with_type ctxt format nonmono_Ts type_sys T
|
blanchet@43803
|
926 |
else
|
blanchet@43803
|
927 |
I)
|
blanchet@43803
|
928 |
end
|
blanchet@43803
|
929 |
in aux end
|
blanchet@43803
|
930 |
and formula_from_combformula ctxt format nonmono_Ts type_sys
|
blanchet@43803
|
931 |
should_predicate_on_var =
|
blanchet@43700
|
932 |
let
|
blanchet@43835
|
933 |
val higher_order = is_setting_higher_order format type_sys
|
blanchet@43803
|
934 |
val do_term = term_from_combterm ctxt format nonmono_Ts type_sys Top_Level
|
blanchet@43444
|
935 |
val do_bound_type =
|
blanchet@43552
|
936 |
case type_sys of
|
blanchet@43587
|
937 |
Simple_Types level =>
|
blanchet@43835
|
938 |
homogenized_type ctxt nonmono_Ts level 0
|
blanchet@43835
|
939 |
#> mangled_type higher_order false 0 #> SOME
|
blanchet@43552
|
940 |
| _ => K NONE
|
blanchet@43747
|
941 |
fun do_out_of_bound_type pos phi universal (name, T) =
|
blanchet@43705
|
942 |
if should_predicate_on_type ctxt nonmono_Ts type_sys
|
blanchet@43747
|
943 |
(fn () => should_predicate_on_var pos phi universal name) T then
|
blanchet@43705
|
944 |
CombVar (name, T)
|
blanchet@43835
|
945 |
|> type_pred_combterm ctxt nonmono_Ts type_sys T
|
blanchet@43747
|
946 |
|> do_term |> AAtom |> SOME
|
blanchet@43444
|
947 |
else
|
blanchet@43444
|
948 |
NONE
|
blanchet@43747
|
949 |
fun do_formula pos (AQuant (q, xs, phi)) =
|
blanchet@43747
|
950 |
let
|
blanchet@43747
|
951 |
val phi = phi |> do_formula pos
|
blanchet@43747
|
952 |
val universal = Option.map (q = AExists ? not) pos
|
blanchet@43747
|
953 |
in
|
blanchet@43705
|
954 |
AQuant (q, xs |> map (apsnd (fn NONE => NONE
|
blanchet@43705
|
955 |
| SOME T => do_bound_type T)),
|
blanchet@43705
|
956 |
(if q = AForall then mk_ahorn else fold_rev (mk_aconn AAnd))
|
blanchet@43705
|
957 |
(map_filter
|
blanchet@43705
|
958 |
(fn (_, NONE) => NONE
|
blanchet@43705
|
959 |
| (s, SOME T) =>
|
blanchet@43747
|
960 |
do_out_of_bound_type pos phi universal (s, T))
|
blanchet@43747
|
961 |
xs)
|
blanchet@43705
|
962 |
phi)
|
blanchet@43705
|
963 |
end
|
blanchet@43747
|
964 |
| do_formula pos (AConn conn) = aconn_map pos do_formula conn
|
blanchet@43747
|
965 |
| do_formula _ (AAtom tm) = AAtom (do_term tm)
|
blanchet@43747
|
966 |
in do_formula o SOME end
|
blanchet@43444
|
967 |
|
blanchet@43797
|
968 |
fun bound_atomic_types format type_sys Ts =
|
blanchet@43592
|
969 |
mk_ahorn (map (formula_from_fo_literal o fo_literal_from_type_literal)
|
blanchet@43797
|
970 |
(atp_type_literals_for_types format type_sys Axiom Ts))
|
blanchet@43592
|
971 |
|
blanchet@43797
|
972 |
fun formula_for_fact ctxt format nonmono_Ts type_sys
|
blanchet@43444
|
973 |
({combformula, atomic_types, ...} : translated_formula) =
|
blanchet@43592
|
974 |
combformula
|
blanchet@43592
|
975 |
|> close_combformula_universally
|
blanchet@43803
|
976 |
|> formula_from_combformula ctxt format nonmono_Ts type_sys
|
blanchet@43747
|
977 |
is_var_nonmonotonic_in_formula true
|
blanchet@43797
|
978 |
|> bound_atomic_types format type_sys atomic_types
|
blanchet@43444
|
979 |
|> close_formula_universally
|
blanchet@43444
|
980 |
|
blanchet@43444
|
981 |
(* Each fact is given a unique fact number to avoid name clashes (e.g., because
|
blanchet@43444
|
982 |
of monomorphization). The TPTP explicitly forbids name clashes, and some of
|
blanchet@43444
|
983 |
the remote provers might care. *)
|
blanchet@43797
|
984 |
fun formula_line_for_fact ctxt format prefix nonmono_Ts type_sys
|
blanchet@43511
|
985 |
(j, formula as {name, locality, kind, ...}) =
|
blanchet@43550
|
986 |
Formula (prefix ^ (if polymorphism_of_type_sys type_sys = Polymorphic then ""
|
blanchet@43550
|
987 |
else string_of_int j ^ "_") ^
|
blanchet@43518
|
988 |
ascii_of name,
|
blanchet@43797
|
989 |
kind, formula_for_fact ctxt format nonmono_Ts type_sys formula, NONE,
|
blanchet@43748
|
990 |
case locality of
|
blanchet@43748
|
991 |
Intro => intro_info
|
blanchet@43748
|
992 |
| Elim => elim_info
|
blanchet@43748
|
993 |
| Simp => simp_info
|
blanchet@43748
|
994 |
| _ => NONE)
|
blanchet@43444
|
995 |
|
blanchet@43780
|
996 |
fun formula_line_for_class_rel_clause
|
blanchet@43780
|
997 |
(ClassRelClause {name, subclass, superclass, ...}) =
|
blanchet@43444
|
998 |
let val ty_arg = ATerm (`I "T", []) in
|
blanchet@43448
|
999 |
Formula (class_rel_clause_prefix ^ ascii_of name, Axiom,
|
blanchet@43444
|
1000 |
AConn (AImplies, [AAtom (ATerm (subclass, [ty_arg])),
|
blanchet@43444
|
1001 |
AAtom (ATerm (superclass, [ty_arg]))])
|
blanchet@43748
|
1002 |
|> close_formula_universally, intro_info, NONE)
|
blanchet@43444
|
1003 |
end
|
blanchet@43444
|
1004 |
|
blanchet@43444
|
1005 |
fun fo_literal_from_arity_literal (TConsLit (c, t, args)) =
|
blanchet@43444
|
1006 |
(true, ATerm (c, [ATerm (t, map (fn arg => ATerm (arg, [])) args)]))
|
blanchet@43444
|
1007 |
| fo_literal_from_arity_literal (TVarLit (c, sort)) =
|
blanchet@43444
|
1008 |
(false, ATerm (c, [ATerm (sort, [])]))
|
blanchet@43444
|
1009 |
|
blanchet@43780
|
1010 |
fun formula_line_for_arity_clause
|
blanchet@43780
|
1011 |
(ArityClause {name, prem_lits, concl_lits, ...}) =
|
blanchet@43448
|
1012 |
Formula (arity_clause_prefix ^ ascii_of name, Axiom,
|
blanchet@43444
|
1013 |
mk_ahorn (map (formula_from_fo_literal o apfst not
|
blanchet@43766
|
1014 |
o fo_literal_from_arity_literal) prem_lits)
|
blanchet@43444
|
1015 |
(formula_from_fo_literal
|
blanchet@43766
|
1016 |
(fo_literal_from_arity_literal concl_lits))
|
blanchet@43748
|
1017 |
|> close_formula_universally, intro_info, NONE)
|
blanchet@43444
|
1018 |
|
blanchet@43803
|
1019 |
fun formula_line_for_conjecture ctxt format nonmono_Ts type_sys
|
blanchet@43444
|
1020 |
({name, kind, combformula, ...} : translated_formula) =
|
blanchet@43448
|
1021 |
Formula (conjecture_prefix ^ name, kind,
|
blanchet@43803
|
1022 |
formula_from_combformula ctxt format nonmono_Ts type_sys
|
blanchet@43780
|
1023 |
is_var_nonmonotonic_in_formula false
|
blanchet@43780
|
1024 |
(close_combformula_universally combformula)
|
blanchet@43444
|
1025 |
|> close_formula_universally, NONE, NONE)
|
blanchet@43444
|
1026 |
|
blanchet@43797
|
1027 |
fun free_type_literals format type_sys
|
blanchet@43797
|
1028 |
({atomic_types, ...} : translated_formula) =
|
blanchet@43797
|
1029 |
atomic_types |> atp_type_literals_for_types format type_sys Conjecture
|
blanchet@43444
|
1030 |
|> map fo_literal_from_type_literal
|
blanchet@43444
|
1031 |
|
blanchet@43444
|
1032 |
fun formula_line_for_free_type j lit =
|
blanchet@43448
|
1033 |
Formula (tfree_prefix ^ string_of_int j, Hypothesis,
|
blanchet@43444
|
1034 |
formula_from_fo_literal lit, NONE, NONE)
|
blanchet@43797
|
1035 |
fun formula_lines_for_free_types format type_sys facts =
|
blanchet@43444
|
1036 |
let
|
blanchet@43797
|
1037 |
val litss = map (free_type_literals format type_sys) facts
|
blanchet@43444
|
1038 |
val lits = fold (union (op =)) litss []
|
blanchet@43444
|
1039 |
in map2 formula_line_for_free_type (0 upto length lits - 1) lits end
|
blanchet@43444
|
1040 |
|
blanchet@43444
|
1041 |
(** Symbol declarations **)
|
blanchet@43415
|
1042 |
|
blanchet@43445
|
1043 |
fun should_declare_sym type_sys pred_sym s =
|
blanchet@43839
|
1044 |
is_tptp_user_symbol s andalso not (String.isPrefix bound_var_prefix s) andalso
|
blanchet@43765
|
1045 |
(case type_sys of
|
blanchet@43765
|
1046 |
Simple_Types _ => true
|
blanchet@43765
|
1047 |
| Tags (_, _, Light) => true
|
blanchet@43765
|
1048 |
| _ => not pred_sym)
|
blanchet@43413
|
1049 |
|
blanchet@43755
|
1050 |
fun sym_decl_table_for_facts ctxt type_sys repaired_sym_tab (conjs, facts) =
|
blanchet@43445
|
1051 |
let
|
blanchet@43568
|
1052 |
fun add_combterm in_conj tm =
|
blanchet@43445
|
1053 |
let val (head, args) = strip_combterm_comb tm in
|
blanchet@43445
|
1054 |
(case head of
|
blanchet@43445
|
1055 |
CombConst ((s, s'), T, T_args) =>
|
blanchet@43445
|
1056 |
let val pred_sym = is_pred_sym repaired_sym_tab s in
|
blanchet@43445
|
1057 |
if should_declare_sym type_sys pred_sym s then
|
blanchet@43447
|
1058 |
Symtab.map_default (s, [])
|
blanchet@43755
|
1059 |
(insert_type ctxt #3 (s', T_args, T, pred_sym, length args,
|
blanchet@43755
|
1060 |
in_conj))
|
blanchet@43445
|
1061 |
else
|
blanchet@43445
|
1062 |
I
|
blanchet@43445
|
1063 |
end
|
blanchet@43445
|
1064 |
| _ => I)
|
blanchet@43568
|
1065 |
#> fold (add_combterm in_conj) args
|
blanchet@43445
|
1066 |
end
|
blanchet@43568
|
1067 |
fun add_fact in_conj =
|
blanchet@43705
|
1068 |
fact_lift (formula_fold NONE (K (add_combterm in_conj)))
|
blanchet@43568
|
1069 |
in
|
blanchet@43568
|
1070 |
Symtab.empty
|
blanchet@43568
|
1071 |
|> is_type_sys_fairly_sound type_sys
|
blanchet@43568
|
1072 |
? (fold (add_fact true) conjs #> fold (add_fact false) facts)
|
blanchet@43568
|
1073 |
end
|
blanchet@43445
|
1074 |
|
blanchet@43755
|
1075 |
(* These types witness that the type classes they belong to allow infinite
|
blanchet@43755
|
1076 |
models and hence that any types with these type classes is monotonic. *)
|
blanchet@43755
|
1077 |
val known_infinite_types = [@{typ nat}, @{typ int}, @{typ "nat => bool"}]
|
blanchet@43755
|
1078 |
|
blanchet@43555
|
1079 |
(* This inference is described in section 2.3 of Claessen et al.'s "Sorting it
|
blanchet@43555
|
1080 |
out with monotonicity" paper presented at CADE 2011. *)
|
blanchet@43755
|
1081 |
fun add_combterm_nonmonotonic_types _ _ (SOME false) _ = I
|
blanchet@43700
|
1082 |
| add_combterm_nonmonotonic_types ctxt level _
|
blanchet@43841
|
1083 |
(CombApp (CombApp (CombConst ((s, _), Type (_, [T, _]), _), tm1), tm2)) =
|
blanchet@43841
|
1084 |
(is_tptp_equal s andalso exists is_var_or_bound_var [tm1, tm2] andalso
|
blanchet@43700
|
1085 |
(case level of
|
blanchet@43755
|
1086 |
Nonmonotonic_Types =>
|
blanchet@43755
|
1087 |
not (is_type_surely_infinite ctxt known_infinite_types T)
|
blanchet@43700
|
1088 |
| Finite_Types => is_type_surely_finite ctxt T
|
blanchet@43755
|
1089 |
| _ => true)) ? insert_type ctxt I (deep_freeze_type T)
|
blanchet@43700
|
1090 |
| add_combterm_nonmonotonic_types _ _ _ _ = I
|
blanchet@43700
|
1091 |
fun add_fact_nonmonotonic_types ctxt level ({kind, combformula, ...}
|
blanchet@43700
|
1092 |
: translated_formula) =
|
blanchet@43705
|
1093 |
formula_fold (SOME (kind <> Conjecture))
|
blanchet@43700
|
1094 |
(add_combterm_nonmonotonic_types ctxt level) combformula
|
blanchet@43755
|
1095 |
fun nonmonotonic_types_for_facts ctxt type_sys facts =
|
blanchet@43700
|
1096 |
let val level = level_of_type_sys type_sys in
|
blanchet@43755
|
1097 |
if level = Nonmonotonic_Types orelse level = Finite_Types then
|
blanchet@43755
|
1098 |
[] |> fold (add_fact_nonmonotonic_types ctxt level) facts
|
blanchet@43755
|
1099 |
(* We must add "bool" in case the helper "True_or_False" is added
|
blanchet@43755
|
1100 |
later. In addition, several places in the code rely on the list of
|
blanchet@43755
|
1101 |
nonmonotonic types not being empty. *)
|
blanchet@43755
|
1102 |
|> insert_type ctxt I @{typ bool}
|
blanchet@43755
|
1103 |
else
|
blanchet@43755
|
1104 |
[]
|
blanchet@43700
|
1105 |
end
|
blanchet@43547
|
1106 |
|
blanchet@43835
|
1107 |
fun decl_line_for_sym ctxt format nonmono_Ts type_sys s
|
blanchet@43835
|
1108 |
(s', T_args, T, pred_sym, ary, _) =
|
blanchet@43835
|
1109 |
let
|
blanchet@43835
|
1110 |
val (higher_order, T_arg_Ts, level) =
|
blanchet@43835
|
1111 |
case type_sys of
|
blanchet@43835
|
1112 |
Simple_Types level => (format = THF, [], level)
|
blanchet@43835
|
1113 |
| _ => (false, replicate (length T_args) homo_infinite_type, No_Types)
|
blanchet@43835
|
1114 |
in
|
blanchet@43839
|
1115 |
Decl (sym_decl_prefix ^ s, (s, s'),
|
blanchet@43835
|
1116 |
(T_arg_Ts ---> (T |> homogenized_type ctxt nonmono_Ts level ary))
|
blanchet@43835
|
1117 |
|> mangled_type higher_order pred_sym (length T_arg_Ts + ary))
|
blanchet@43835
|
1118 |
end
|
blanchet@43450
|
1119 |
|
blanchet@43463
|
1120 |
fun is_polymorphic_type T = fold_atyps (fn TVar _ => K true | _ => I) T false
|
blanchet@43463
|
1121 |
|
blanchet@43797
|
1122 |
fun formula_line_for_pred_sym_decl ctxt format conj_sym_kind nonmono_Ts type_sys
|
blanchet@43797
|
1123 |
n s j (s', T_args, T, _, ary, in_conj) =
|
blanchet@43450
|
1124 |
let
|
blanchet@43580
|
1125 |
val (kind, maybe_negate) =
|
blanchet@43580
|
1126 |
if in_conj then (conj_sym_kind, conj_sym_kind = Conjecture ? mk_anot)
|
blanchet@43580
|
1127 |
else (Axiom, I)
|
blanchet@43618
|
1128 |
val (arg_Ts, res_T) = chop_fun ary T
|
blanchet@43450
|
1129 |
val bound_names =
|
blanchet@43450
|
1130 |
1 upto length arg_Ts |> map (`I o make_bound_var o string_of_int)
|
blanchet@43700
|
1131 |
val bounds =
|
blanchet@43450
|
1132 |
bound_names ~~ arg_Ts |> map (fn (name, T) => CombConst (name, T, []))
|
blanchet@43450
|
1133 |
val bound_Ts =
|
blanchet@43463
|
1134 |
arg_Ts |> map (fn T => if n > 1 orelse is_polymorphic_type T then SOME T
|
blanchet@43463
|
1135 |
else NONE)
|
blanchet@43450
|
1136 |
in
|
blanchet@43839
|
1137 |
Formula (sym_formula_prefix ^ s ^
|
blanchet@43580
|
1138 |
(if n > 1 then "_" ^ string_of_int j else ""), kind,
|
blanchet@43450
|
1139 |
CombConst ((s, s'), T, T_args)
|
blanchet@43700
|
1140 |
|> fold (curry (CombApp o swap)) bounds
|
blanchet@43835
|
1141 |
|> type_pred_combterm ctxt nonmono_Ts type_sys res_T
|
blanchet@43804
|
1142 |
|> AAtom |> mk_aquant AForall (bound_names ~~ bound_Ts)
|
blanchet@43803
|
1143 |
|> formula_from_combformula ctxt format nonmono_Ts type_sys
|
blanchet@43747
|
1144 |
(K (K (K (K true)))) true
|
blanchet@43797
|
1145 |
|> n > 1 ? bound_atomic_types format type_sys (atyps_of T)
|
blanchet@43580
|
1146 |
|> close_formula_universally
|
blanchet@43580
|
1147 |
|> maybe_negate,
|
blanchet@43748
|
1148 |
intro_info, NONE)
|
blanchet@43450
|
1149 |
end
|
blanchet@43450
|
1150 |
|
blanchet@43797
|
1151 |
fun formula_lines_for_tag_sym_decl ctxt format conj_sym_kind nonmono_Ts type_sys
|
blanchet@43797
|
1152 |
n s (j, (s', T_args, T, pred_sym, ary, in_conj)) =
|
blanchet@43700
|
1153 |
let
|
blanchet@43700
|
1154 |
val ident_base =
|
blanchet@43839
|
1155 |
sym_formula_prefix ^ s ^ (if n > 1 then "_" ^ string_of_int j else "")
|
blanchet@43721
|
1156 |
val (kind, maybe_negate) =
|
blanchet@43721
|
1157 |
if in_conj then (conj_sym_kind, conj_sym_kind = Conjecture ? mk_anot)
|
blanchet@43721
|
1158 |
else (Axiom, I)
|
blanchet@43700
|
1159 |
val (arg_Ts, res_T) = chop_fun ary T
|
blanchet@43700
|
1160 |
val bound_names =
|
blanchet@43700
|
1161 |
1 upto length arg_Ts |> map (`I o make_bound_var o string_of_int)
|
blanchet@43700
|
1162 |
val bounds = bound_names |> map (fn name => ATerm (name, []))
|
blanchet@43835
|
1163 |
val cst = mk_const_aterm (s, s') T_args
|
blanchet@43701
|
1164 |
val atomic_Ts = atyps_of T
|
blanchet@43705
|
1165 |
fun eq tms =
|
blanchet@43705
|
1166 |
(if pred_sym then AConn (AIff, map AAtom tms)
|
blanchet@43841
|
1167 |
else AAtom (ATerm (`I tptp_equal, tms)))
|
blanchet@43797
|
1168 |
|> bound_atomic_types format type_sys atomic_Ts
|
blanchet@43701
|
1169 |
|> close_formula_universally
|
blanchet@43721
|
1170 |
|> maybe_negate
|
blanchet@43707
|
1171 |
val should_encode = should_encode_type ctxt nonmono_Ts All_Types
|
blanchet@43803
|
1172 |
val tag_with = tag_with_type ctxt format nonmono_Ts type_sys
|
blanchet@43700
|
1173 |
val add_formula_for_res =
|
blanchet@43700
|
1174 |
if should_encode res_T then
|
blanchet@43721
|
1175 |
cons (Formula (ident_base ^ "_res", kind,
|
blanchet@43835
|
1176 |
eq [tag_with res_T (cst bounds), cst bounds],
|
blanchet@43748
|
1177 |
simp_info, NONE))
|
blanchet@43700
|
1178 |
else
|
blanchet@43700
|
1179 |
I
|
blanchet@43700
|
1180 |
fun add_formula_for_arg k =
|
blanchet@43700
|
1181 |
let val arg_T = nth arg_Ts k in
|
blanchet@43700
|
1182 |
if should_encode arg_T then
|
blanchet@43700
|
1183 |
case chop k bounds of
|
blanchet@43700
|
1184 |
(bounds1, bound :: bounds2) =>
|
blanchet@43721
|
1185 |
cons (Formula (ident_base ^ "_arg" ^ string_of_int (k + 1), kind,
|
blanchet@43835
|
1186 |
eq [cst (bounds1 @ tag_with arg_T bound :: bounds2),
|
blanchet@43835
|
1187 |
cst bounds],
|
blanchet@43748
|
1188 |
simp_info, NONE))
|
blanchet@43700
|
1189 |
| _ => raise Fail "expected nonempty tail"
|
blanchet@43700
|
1190 |
else
|
blanchet@43700
|
1191 |
I
|
blanchet@43700
|
1192 |
end
|
blanchet@43700
|
1193 |
in
|
blanchet@43705
|
1194 |
[] |> not pred_sym ? add_formula_for_res
|
blanchet@43700
|
1195 |
|> fold add_formula_for_arg (ary - 1 downto 0)
|
blanchet@43700
|
1196 |
end
|
blanchet@43700
|
1197 |
|
blanchet@43707
|
1198 |
fun result_type_of_decl (_, _, T, _, ary, _) = chop_fun ary T |> snd
|
blanchet@43707
|
1199 |
|
blanchet@43797
|
1200 |
fun problem_lines_for_sym_decls ctxt format conj_sym_kind nonmono_Ts type_sys
|
blanchet@43580
|
1201 |
(s, decls) =
|
blanchet@43839
|
1202 |
case type_sys of
|
blanchet@43839
|
1203 |
Simple_Types _ =>
|
blanchet@43839
|
1204 |
decls |> map (decl_line_for_sym ctxt format nonmono_Ts type_sys s)
|
blanchet@43839
|
1205 |
| Preds _ =>
|
blanchet@43839
|
1206 |
let
|
blanchet@43839
|
1207 |
val decls =
|
blanchet@43839
|
1208 |
case decls of
|
blanchet@43839
|
1209 |
decl :: (decls' as _ :: _) =>
|
blanchet@43839
|
1210 |
let val T = result_type_of_decl decl in
|
blanchet@43839
|
1211 |
if forall (curry (type_instance ctxt o swap) T
|
blanchet@43839
|
1212 |
o result_type_of_decl) decls' then
|
blanchet@43839
|
1213 |
[decl]
|
blanchet@43839
|
1214 |
else
|
blanchet@43839
|
1215 |
decls
|
blanchet@43839
|
1216 |
end
|
blanchet@43839
|
1217 |
| _ => decls
|
blanchet@43839
|
1218 |
val n = length decls
|
blanchet@43839
|
1219 |
val decls =
|
blanchet@43839
|
1220 |
decls
|
blanchet@43839
|
1221 |
|> filter (should_predicate_on_type ctxt nonmono_Ts type_sys (K true)
|
blanchet@43839
|
1222 |
o result_type_of_decl)
|
blanchet@43839
|
1223 |
in
|
blanchet@43839
|
1224 |
(0 upto length decls - 1, decls)
|
blanchet@43839
|
1225 |
|-> map2 (formula_line_for_pred_sym_decl ctxt format conj_sym_kind
|
blanchet@43839
|
1226 |
nonmono_Ts type_sys n s)
|
blanchet@43839
|
1227 |
end
|
blanchet@43839
|
1228 |
| Tags (_, _, heaviness) =>
|
blanchet@43839
|
1229 |
(case heaviness of
|
blanchet@43839
|
1230 |
Heavy => []
|
blanchet@43839
|
1231 |
| Light =>
|
blanchet@43839
|
1232 |
let val n = length decls in
|
blanchet@43839
|
1233 |
(0 upto n - 1 ~~ decls)
|
blanchet@43839
|
1234 |
|> maps (formula_lines_for_tag_sym_decl ctxt format conj_sym_kind
|
blanchet@43839
|
1235 |
nonmono_Ts type_sys n s)
|
blanchet@43839
|
1236 |
end)
|
blanchet@43450
|
1237 |
|
blanchet@43797
|
1238 |
fun problem_lines_for_sym_decl_table ctxt format conj_sym_kind nonmono_Ts
|
blanchet@43797
|
1239 |
type_sys sym_decl_tab =
|
blanchet@43839
|
1240 |
sym_decl_tab
|
blanchet@43839
|
1241 |
|> Symtab.dest
|
blanchet@43839
|
1242 |
|> sort_wrt fst
|
blanchet@43839
|
1243 |
|> rpair []
|
blanchet@43839
|
1244 |
|-> fold_rev (append o problem_lines_for_sym_decls ctxt format conj_sym_kind
|
blanchet@43839
|
1245 |
nonmono_Ts type_sys)
|
blanchet@43414
|
1246 |
|
blanchet@43708
|
1247 |
fun should_add_ti_ti_helper (Tags (Polymorphic, level, Heavy)) =
|
blanchet@43702
|
1248 |
level = Nonmonotonic_Types orelse level = Finite_Types
|
blanchet@43702
|
1249 |
| should_add_ti_ti_helper _ = false
|
blanchet@43702
|
1250 |
|
blanchet@43780
|
1251 |
fun offset_of_heading_in_problem _ [] j = j
|
blanchet@43780
|
1252 |
| offset_of_heading_in_problem needle ((heading, lines) :: problem) j =
|
blanchet@43780
|
1253 |
if heading = needle then j
|
blanchet@43780
|
1254 |
else offset_of_heading_in_problem needle problem (j + length lines)
|
blanchet@43780
|
1255 |
|
blanchet@43839
|
1256 |
val implicit_declsN = "Should-be-implicit typings"
|
blanchet@43839
|
1257 |
val explicit_declsN = "Explicit typings"
|
blanchet@41405
|
1258 |
val factsN = "Relevant facts"
|
blanchet@41405
|
1259 |
val class_relsN = "Class relationships"
|
blanchet@43414
|
1260 |
val aritiesN = "Arities"
|
blanchet@41405
|
1261 |
val helpersN = "Helper facts"
|
blanchet@41405
|
1262 |
val conjsN = "Conjectures"
|
blanchet@41561
|
1263 |
val free_typesN = "Type variables"
|
blanchet@41405
|
1264 |
|
blanchet@43780
|
1265 |
fun prepare_atp_problem ctxt format conj_sym_kind prem_kind type_sys
|
blanchet@43780
|
1266 |
explicit_apply hyp_ts concl_t facts =
|
blanchet@38506
|
1267 |
let
|
blanchet@41561
|
1268 |
val (fact_names, (conjs, facts, class_rel_clauses, arity_clauses)) =
|
blanchet@43803
|
1269 |
translate_formulas ctxt format prem_kind type_sys hyp_ts concl_t facts
|
blanchet@43905
|
1270 |
val sym_tab = conjs @ facts |> sym_table_for_facts ctxt explicit_apply
|
blanchet@43755
|
1271 |
val nonmono_Ts = conjs @ facts |> nonmonotonic_types_for_facts ctxt type_sys
|
blanchet@43803
|
1272 |
val repair = repair_fact ctxt format nonmono_Ts type_sys sym_tab
|
blanchet@43552
|
1273 |
val (conjs, facts) = (conjs, facts) |> pairself (map repair)
|
blanchet@43905
|
1274 |
val repaired_sym_tab =
|
blanchet@43905
|
1275 |
conjs @ facts |> sym_table_for_facts ctxt (SOME false)
|
blanchet@43444
|
1276 |
val helpers =
|
blanchet@43803
|
1277 |
repaired_sym_tab |> helper_facts_for_sym_table ctxt format type_sys
|
blanchet@43803
|
1278 |
|> map repair
|
blanchet@43765
|
1279 |
val lavish_nonmono_Ts =
|
blanchet@43765
|
1280 |
if null nonmono_Ts orelse
|
blanchet@43765
|
1281 |
polymorphism_of_type_sys type_sys <> Polymorphic then
|
blanchet@43765
|
1282 |
nonmono_Ts
|
blanchet@43765
|
1283 |
else
|
blanchet@43765
|
1284 |
[TVar (("'a", 0), HOLogic.typeS)]
|
blanchet@43550
|
1285 |
val sym_decl_lines =
|
blanchet@43596
|
1286 |
(conjs, helpers @ facts)
|
blanchet@43755
|
1287 |
|> sym_decl_table_for_facts ctxt type_sys repaired_sym_tab
|
blanchet@43797
|
1288 |
|> problem_lines_for_sym_decl_table ctxt format conj_sym_kind
|
blanchet@43797
|
1289 |
lavish_nonmono_Ts type_sys
|
blanchet@43750
|
1290 |
val helper_lines =
|
blanchet@43797
|
1291 |
0 upto length helpers - 1 ~~ helpers
|
blanchet@43797
|
1292 |
|> map (formula_line_for_fact ctxt format helper_prefix lavish_nonmono_Ts
|
blanchet@43797
|
1293 |
type_sys)
|
blanchet@43797
|
1294 |
|> (if should_add_ti_ti_helper type_sys then cons (ti_ti_helper_fact ())
|
blanchet@43797
|
1295 |
else I)
|
blanchet@43393
|
1296 |
(* Reordering these might confuse the proof reconstruction code or the SPASS
|
blanchet@43880
|
1297 |
FLOTTER hack. *)
|
blanchet@38506
|
1298 |
val problem =
|
blanchet@43839
|
1299 |
[(explicit_declsN, sym_decl_lines),
|
blanchet@43797
|
1300 |
(factsN,
|
blanchet@43797
|
1301 |
map (formula_line_for_fact ctxt format fact_prefix nonmono_Ts type_sys)
|
blanchet@43797
|
1302 |
(0 upto length facts - 1 ~~ facts)),
|
blanchet@43416
|
1303 |
(class_relsN, map formula_line_for_class_rel_clause class_rel_clauses),
|
blanchet@43416
|
1304 |
(aritiesN, map formula_line_for_arity_clause arity_clauses),
|
blanchet@43750
|
1305 |
(helpersN, helper_lines),
|
blanchet@43803
|
1306 |
(conjsN,
|
blanchet@43803
|
1307 |
map (formula_line_for_conjecture ctxt format nonmono_Ts type_sys)
|
blanchet@43803
|
1308 |
conjs),
|
blanchet@43797
|
1309 |
(free_typesN,
|
blanchet@43797
|
1310 |
formula_lines_for_free_types format type_sys (facts @ conjs))]
|
blanchet@43414
|
1311 |
val problem =
|
blanchet@43432
|
1312 |
problem
|
blanchet@43839
|
1313 |
|> (if format = CNF_UEQ then filter_cnf_ueq_problem else I)
|
blanchet@43839
|
1314 |
|> (if is_format_typed format then
|
blanchet@43839
|
1315 |
declare_undeclared_syms_in_atp_problem type_decl_prefix
|
blanchet@43839
|
1316 |
implicit_declsN
|
blanchet@43839
|
1317 |
else
|
blanchet@43839
|
1318 |
I)
|
blanchet@43517
|
1319 |
val (problem, pool) =
|
blanchet@43517
|
1320 |
problem |> nice_atp_problem (Config.get ctxt readable_names)
|
blanchet@43750
|
1321 |
val helpers_offset = offset_of_heading_in_problem helpersN problem 0
|
blanchet@43750
|
1322 |
val typed_helpers =
|
blanchet@43750
|
1323 |
map_filter (fn (j, {name, ...}) =>
|
blanchet@43750
|
1324 |
if String.isSuffix typed_helper_suffix name then SOME j
|
blanchet@43750
|
1325 |
else NONE)
|
blanchet@43750
|
1326 |
((helpers_offset + 1 upto helpers_offset + length helpers)
|
blanchet@43750
|
1327 |
~~ helpers)
|
blanchet@43649
|
1328 |
fun add_sym_arity (s, {min_ary, ...} : sym_info) =
|
blanchet@43620
|
1329 |
if min_ary > 0 then
|
blanchet@43620
|
1330 |
case strip_prefix_and_unascii const_prefix s of
|
blanchet@43620
|
1331 |
SOME s => Symtab.insert (op =) (s, min_ary)
|
blanchet@43620
|
1332 |
| NONE => I
|
blanchet@43620
|
1333 |
else
|
blanchet@43620
|
1334 |
I
|
blanchet@38506
|
1335 |
in
|
blanchet@38506
|
1336 |
(problem,
|
blanchet@38506
|
1337 |
case pool of SOME the_pool => snd the_pool | NONE => Symtab.empty,
|
blanchet@43456
|
1338 |
offset_of_heading_in_problem conjsN problem 0,
|
blanchet@43412
|
1339 |
offset_of_heading_in_problem factsN problem 0,
|
blanchet@43620
|
1340 |
fact_names |> Vector.fromList,
|
blanchet@43750
|
1341 |
typed_helpers,
|
blanchet@43620
|
1342 |
Symtab.empty |> Symtab.fold add_sym_arity sym_tab)
|
blanchet@38506
|
1343 |
end
|
blanchet@38506
|
1344 |
|
blanchet@41561
|
1345 |
(* FUDGE *)
|
blanchet@41561
|
1346 |
val conj_weight = 0.0
|
blanchet@42641
|
1347 |
val hyp_weight = 0.1
|
blanchet@42641
|
1348 |
val fact_min_weight = 0.2
|
blanchet@41561
|
1349 |
val fact_max_weight = 1.0
|
blanchet@43479
|
1350 |
val type_info_default_weight = 0.8
|
blanchet@41561
|
1351 |
|
blanchet@41561
|
1352 |
fun add_term_weights weight (ATerm (s, tms)) =
|
blanchet@43839
|
1353 |
is_tptp_user_symbol s ? Symtab.default (s, weight)
|
blanchet@41561
|
1354 |
#> fold (add_term_weights weight) tms
|
blanchet@43448
|
1355 |
fun add_problem_line_weights weight (Formula (_, _, phi, _, _)) =
|
blanchet@43705
|
1356 |
formula_fold NONE (K (add_term_weights weight)) phi
|
blanchet@43399
|
1357 |
| add_problem_line_weights _ _ = I
|
blanchet@41561
|
1358 |
|
blanchet@41561
|
1359 |
fun add_conjectures_weights [] = I
|
blanchet@41561
|
1360 |
| add_conjectures_weights conjs =
|
blanchet@41561
|
1361 |
let val (hyps, conj) = split_last conjs in
|
blanchet@41561
|
1362 |
add_problem_line_weights conj_weight conj
|
blanchet@41561
|
1363 |
#> fold (add_problem_line_weights hyp_weight) hyps
|
blanchet@41561
|
1364 |
end
|
blanchet@41561
|
1365 |
|
blanchet@41561
|
1366 |
fun add_facts_weights facts =
|
blanchet@41561
|
1367 |
let
|
blanchet@41561
|
1368 |
val num_facts = length facts
|
blanchet@41561
|
1369 |
fun weight_of j =
|
blanchet@41561
|
1370 |
fact_min_weight + (fact_max_weight - fact_min_weight) * Real.fromInt j
|
blanchet@41561
|
1371 |
/ Real.fromInt num_facts
|
blanchet@41561
|
1372 |
in
|
blanchet@41561
|
1373 |
map weight_of (0 upto num_facts - 1) ~~ facts
|
blanchet@41561
|
1374 |
|> fold (uncurry add_problem_line_weights)
|
blanchet@41561
|
1375 |
end
|
blanchet@41561
|
1376 |
|
blanchet@41561
|
1377 |
(* Weights are from 0.0 (most important) to 1.0 (least important). *)
|
blanchet@41561
|
1378 |
fun atp_problem_weights problem =
|
blanchet@43479
|
1379 |
let val get = these o AList.lookup (op =) problem in
|
blanchet@43479
|
1380 |
Symtab.empty
|
blanchet@43479
|
1381 |
|> add_conjectures_weights (get free_typesN @ get conjsN)
|
blanchet@43479
|
1382 |
|> add_facts_weights (get factsN)
|
blanchet@43479
|
1383 |
|> fold (fold (add_problem_line_weights type_info_default_weight) o get)
|
blanchet@43839
|
1384 |
[explicit_declsN, class_relsN, aritiesN]
|
blanchet@43479
|
1385 |
|> Symtab.dest
|
blanchet@43479
|
1386 |
|> sort (prod_ord Real.compare string_ord o pairself swap)
|
blanchet@43479
|
1387 |
end
|
blanchet@41561
|
1388 |
|
blanchet@38506
|
1389 |
end;
|