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(* Title: HOL/Tools/Sledgehammer/sledgehammer_fact.ML
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Author: Jia Meng, Cambridge University Computer Laboratory and NICTA
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Author: Jasmin Blanchette, TU Muenchen
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Sledgehammer fact handling.
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*)
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signature SLEDGEHAMMER_FACT =
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sig
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type status = ATP_Problem_Generate.status
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type stature = ATP_Problem_Generate.stature
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type fact = ((unit -> string) * stature) * thm
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type fact_override =
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{add : (Facts.ref * Attrib.src list) list,
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del : (Facts.ref * Attrib.src list) list,
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only : bool}
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val ignore_no_atp : bool Config.T
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val instantiate_inducts : bool Config.T
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val no_fact_override : fact_override
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val fact_from_ref :
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Proof.context -> unit Symtab.table -> thm list -> status Termtab.table
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-> Facts.ref * Attrib.src list -> ((string * stature) * thm) list
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val backquote_thm : thm -> string
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val clasimpset_rule_table_of : Proof.context -> status Termtab.table
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val maybe_instantiate_inducts :
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Proof.context -> term list -> term -> (((unit -> string) * 'a) * thm) list
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-> (((unit -> string) * 'a) * thm) list
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val maybe_filter_no_atps : Proof.context -> ('a * thm) list -> ('a * thm) list
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val all_facts_of : Proof.context -> status Termtab.table -> fact list
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val nearly_all_facts :
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Proof.context -> bool -> fact_override -> unit Symtab.table
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-> status Termtab.table -> thm list -> term list -> term -> fact list
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end;
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structure Sledgehammer_Fact : SLEDGEHAMMER_FACT =
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struct
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open ATP_Problem_Generate
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open Metis_Tactic
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open Sledgehammer_Util
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type fact = ((unit -> string) * stature) * thm
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type fact_override =
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{add : (Facts.ref * Attrib.src list) list,
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del : (Facts.ref * Attrib.src list) list,
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only : bool}
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val sledgehammer_prefixes =
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["ATP", "Meson", "Metis", "Sledgehammer"] |> map (suffix Long_Name.separator)
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(* experimental features *)
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val ignore_no_atp =
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Attrib.setup_config_bool @{binding sledgehammer_ignore_no_atp} (K false)
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val instantiate_inducts =
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Attrib.setup_config_bool @{binding sledgehammer_instantiate_inducts} (K false)
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val no_fact_override = {add = [], del = [], only = false}
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fun needs_quoting reserved s =
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Symtab.defined reserved s orelse
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exists (not o Lexicon.is_identifier) (Long_Name.explode s)
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fun make_name reserved multi j name =
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(name |> needs_quoting reserved name ? quote) ^
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(if multi then "(" ^ string_of_int j ^ ")" else "")
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fun explode_interval _ (Facts.FromTo (i, j)) = i upto j
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| explode_interval max (Facts.From i) = i upto i + max - 1
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| explode_interval _ (Facts.Single i) = [i]
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val backquote =
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raw_explode #> map (fn "`" => "\\`" | s => s) #> implode #> enclose "`" "`"
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(* unfolding these can yield really huge terms *)
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val risky_defs = @{thms Bit0_def Bit1_def}
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fun is_rec_eq lhs = Term.exists_subterm (curry (op =) (head_of lhs))
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fun is_rec_def (@{const Trueprop} $ t) = is_rec_def t
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| is_rec_def (@{const ==>} $ _ $ t2) = is_rec_def t2
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| is_rec_def (Const (@{const_name "=="}, _) $ t1 $ t2) = is_rec_eq t1 t2
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| is_rec_def (Const (@{const_name HOL.eq}, _) $ t1 $ t2) = is_rec_eq t1 t2
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| is_rec_def _ = false
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fun is_assum assms th = exists (fn ct => prop_of th aconv term_of ct) assms
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fun is_chained chained = member Thm.eq_thm_prop chained
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fun scope_of_thm global assms chained th =
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if is_chained chained th then Chained
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else if global then Global
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else if is_assum assms th then Assum
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else Local
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val may_be_induction =
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exists_subterm (fn Var (_, Type (@{type_name fun}, [_, T])) =>
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body_type T = @{typ bool}
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| _ => false)
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fun status_of_thm css name th =
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(* FIXME: use structured name *)
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if (String.isSubstring ".induct" name orelse
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String.isSubstring ".inducts" name) andalso
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may_be_induction (prop_of th) then
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Induction
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else case Termtab.lookup css (prop_of th) of
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SOME status => status
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| NONE => General
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fun stature_of_thm global assms chained css name th =
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(scope_of_thm global assms chained th, status_of_thm css name th)
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fun fact_from_ref ctxt reserved chained css (xthm as (xref, args)) =
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let
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val ths = Attrib.eval_thms ctxt [xthm]
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val bracket =
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map (enclose "[" "]" o Pretty.str_of o Args.pretty_src ctxt) args
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|> implode
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fun nth_name j =
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case xref of
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Facts.Fact s => backquote s ^ bracket
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| Facts.Named (("", _), _) => "[" ^ bracket ^ "]"
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| Facts.Named ((name, _), NONE) =>
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make_name reserved (length ths > 1) (j + 1) name ^ bracket
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| Facts.Named ((name, _), SOME intervals) =>
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make_name reserved true
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(nth (maps (explode_interval (length ths)) intervals) j) name ^
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bracket
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fun add_nth th (j, rest) =
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let val name = nth_name j in
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(j + 1, ((name, stature_of_thm false [] chained css name th), th)
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:: rest)
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end
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in (0, []) |> fold add_nth ths |> snd end
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(* Reject theorems with names like "List.filter.filter_list_def" or
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"Accessible_Part.acc.defs", as these are definitions arising from packages. *)
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fun is_package_def a =
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let val names = Long_Name.explode a in
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(length names > 2 andalso not (hd names = "local") andalso
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String.isSuffix "_def" a) orelse String.isSuffix "_defs" a
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end
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(* FIXME: put other record thms here, or declare as "no_atp" *)
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fun multi_base_blacklist ctxt ho_atp =
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["defs", "select_defs", "update_defs", "split", "splits", "split_asm",
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"cases", "ext_cases", "eq.simps", "eq.refl", "nchotomy", "case_cong",
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"weak_case_cong"]
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|> not (ho_atp orelse (Config.get ctxt instantiate_inducts)) ?
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append ["induct", "inducts"]
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|> map (prefix ".")
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val max_lambda_nesting = 3 (*only applies if not ho_atp*)
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fun term_has_too_many_lambdas max (t1 $ t2) =
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exists (term_has_too_many_lambdas max) [t1, t2]
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| term_has_too_many_lambdas max (Abs (_, _, t)) =
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max = 0 orelse term_has_too_many_lambdas (max - 1) t
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| term_has_too_many_lambdas _ _ = false
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(* Don't count nested lambdas at the level of formulas, since they are
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quantifiers. *)
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fun formula_has_too_many_lambdas Ts (Abs (_, T, t)) =
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formula_has_too_many_lambdas (T :: Ts) t
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| formula_has_too_many_lambdas Ts t =
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if member (op =) [HOLogic.boolT, propT] (fastype_of1 (Ts, t)) then
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exists (formula_has_too_many_lambdas Ts) (#2 (strip_comb t))
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else
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term_has_too_many_lambdas max_lambda_nesting t
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(* The max apply depth of any "metis" call in "Metis_Examples" (on 2007-10-31)
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was 11. *)
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val max_apply_depth = 15
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fun apply_depth (f $ t) = Int.max (apply_depth f, apply_depth t + 1)
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| apply_depth (Abs (_, _, t)) = apply_depth t
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| apply_depth _ = 0
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fun is_formula_too_complex ho_atp t =
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apply_depth t > max_apply_depth orelse
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(not ho_atp andalso formula_has_too_many_lambdas [] t)
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val exists_sledgehammer_const =
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exists_Const (fn (s, _) =>
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exists (fn pref => String.isPrefix pref s) sledgehammer_prefixes)
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(* FIXME: make more reliable *)
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val exists_low_level_class_const =
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exists_Const (fn (s, _) =>
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s = @{const_name equal_class.equal} orelse
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String.isSubstring (Long_Name.separator ^ "class" ^ Long_Name.separator) s)
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fun is_that_fact th =
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String.isSuffix (Long_Name.separator ^ Obtain.thatN) (Thm.get_name_hint th)
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andalso exists_subterm (fn Free (s, _) => s = Name.skolem Auto_Bind.thesisN
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| _ => false) (prop_of th)
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fun is_likely_tautology_or_too_meta th =
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let
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val is_boring_const = member (op =) atp_widely_irrelevant_consts
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fun is_boring_bool t =
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not (exists_Const (not o is_boring_const o fst) t) orelse
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exists_type (exists_subtype (curry (op =) @{typ prop})) t
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fun is_boring_prop (@{const Trueprop} $ t) = is_boring_bool t
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| is_boring_prop (@{const "==>"} $ t $ u) =
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is_boring_prop t andalso is_boring_prop u
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| is_boring_prop (Const (@{const_name all}, _) $ (Abs (_, _, t)) $ u) =
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is_boring_prop t andalso is_boring_prop u
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| is_boring_prop (Const (@{const_name "=="}, _) $ t $ u) =
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is_boring_bool t andalso is_boring_bool u
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| is_boring_prop _ = true
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in
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is_boring_prop (prop_of th) andalso not (Thm.eq_thm_prop (@{thm ext}, th))
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end
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fun is_theorem_bad_for_atps ho_atp th =
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is_likely_tautology_or_too_meta th orelse
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let val t = prop_of th in
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is_formula_too_complex ho_atp t orelse
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exists_type type_has_top_sort t orelse
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exists_sledgehammer_const t orelse exists_low_level_class_const t orelse
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is_that_fact th
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end
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fun hackish_string_for_term thy t =
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Print_Mode.setmp (filter (curry (op =) Symbol.xsymbolsN)
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(print_mode_value ())) (Syntax.string_of_term_global thy) t
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|> String.translate (fn c => if Char.isPrint c then str c else "")
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|> simplify_spaces
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(* This is a terrible hack. Free variables are sometimes coded as "M__" when
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they are displayed as "M" and we want to avoid clashes with these. But
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sometimes it's even worse: "Ma__" encodes "M". So we simply reserve all
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prefixes of all free variables. In the worse case scenario, where the fact
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won't be resolved correctly, the user can fix it manually, e.g., by naming
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the fact in question. Ideally we would need nothing of it, but backticks
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simply don't work with schematic variables. *)
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fun all_prefixes_of s =
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map (fn i => String.extract (s, 0, SOME i)) (1 upto size s - 1)
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fun close_form t =
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(t, [] |> Term.add_free_names t |> maps all_prefixes_of)
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|> fold (fn ((s, i), T) => fn (t', taken) =>
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let val s' = singleton (Name.variant_list taken) s in
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((if fastype_of t' = HOLogic.boolT then HOLogic.all_const
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else Logic.all_const) T
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$ Abs (s', T, abstract_over (Var ((s, i), T), t')),
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s' :: taken)
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end)
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(Term.add_vars t [] |> sort_wrt (fst o fst))
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|> fst
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fun backquote_term thy t =
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t |> close_form
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|> hackish_string_for_term thy
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|> backquote
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blanchet@49415
|
259 |
|
blanchet@49415
|
260 |
fun backquote_thm th = backquote_term (theory_of_thm th) (prop_of th)
|
blanchet@49409
|
261 |
|
blanchet@49265
|
262 |
fun clasimpset_rule_table_of ctxt =
|
blanchet@49265
|
263 |
let
|
blanchet@49265
|
264 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@49265
|
265 |
val atomize = HOLogic.mk_Trueprop o Object_Logic.atomize_term thy
|
blanchet@49265
|
266 |
fun add stature normalizers get_th =
|
blanchet@49265
|
267 |
fold (fn rule =>
|
blanchet@49265
|
268 |
let
|
blanchet@49265
|
269 |
val th = rule |> get_th
|
blanchet@49265
|
270 |
val t =
|
blanchet@49265
|
271 |
th |> Thm.maxidx_of th > 0 ? zero_var_indexes |> prop_of
|
blanchet@49265
|
272 |
in
|
blanchet@49265
|
273 |
fold (fn normalize => Termtab.update (normalize t, stature))
|
blanchet@49265
|
274 |
(I :: normalizers)
|
blanchet@49265
|
275 |
end)
|
blanchet@49265
|
276 |
val {safeIs, (* safeEs, *) hazIs, (* hazEs, *) ...} =
|
blanchet@49265
|
277 |
ctxt |> claset_of |> Classical.rep_cs
|
blanchet@49265
|
278 |
val intros = Item_Net.content safeIs @ Item_Net.content hazIs
|
blanchet@49265
|
279 |
(* Add once it is used:
|
blanchet@49265
|
280 |
val elims =
|
blanchet@49265
|
281 |
Item_Net.content safeEs @ Item_Net.content hazEs
|
blanchet@49265
|
282 |
|> map Classical.classical_rule
|
blanchet@49265
|
283 |
*)
|
blanchet@49265
|
284 |
val simps = ctxt |> simpset_of |> dest_ss |> #simps
|
blanchet@49265
|
285 |
val specs = ctxt |> Spec_Rules.get
|
blanchet@49265
|
286 |
val (rec_defs, nonrec_defs) =
|
blanchet@49265
|
287 |
specs |> filter (curry (op =) Spec_Rules.Equational o fst)
|
blanchet@49265
|
288 |
|> maps (snd o snd)
|
blanchet@49265
|
289 |
|> filter_out (member Thm.eq_thm_prop risky_defs)
|
blanchet@49265
|
290 |
|> List.partition (is_rec_def o prop_of)
|
blanchet@49265
|
291 |
val spec_intros =
|
blanchet@49265
|
292 |
specs |> filter (member (op =) [Spec_Rules.Inductive,
|
blanchet@49265
|
293 |
Spec_Rules.Co_Inductive] o fst)
|
blanchet@49265
|
294 |
|> maps (snd o snd)
|
blanchet@49265
|
295 |
in
|
blanchet@49265
|
296 |
Termtab.empty |> add Simp [atomize] snd simps
|
blanchet@49453
|
297 |
|> add Rec_Def [] I rec_defs
|
blanchet@49453
|
298 |
|> add Non_Rec_Def [] I nonrec_defs
|
blanchet@49265
|
299 |
(* Add once it is used:
|
blanchet@49265
|
300 |
|> add Elim [] I elims
|
blanchet@49265
|
301 |
*)
|
blanchet@49265
|
302 |
|> add Intro [] I intros
|
blanchet@49265
|
303 |
|> add Inductive [] I spec_intros
|
blanchet@49265
|
304 |
end
|
blanchet@49265
|
305 |
|
blanchet@49265
|
306 |
fun uniquify xs =
|
blanchet@49265
|
307 |
Termtab.fold (cons o snd)
|
blanchet@49265
|
308 |
(fold (Termtab.update o `(prop_of o snd)) xs Termtab.empty) []
|
blanchet@49265
|
309 |
|
blanchet@49265
|
310 |
fun struct_induct_rule_on th =
|
blanchet@49265
|
311 |
case Logic.strip_horn (prop_of th) of
|
blanchet@49265
|
312 |
(prems, @{const Trueprop}
|
blanchet@49265
|
313 |
$ ((p as Var ((p_name, 0), _)) $ (a as Var (_, ind_T)))) =>
|
blanchet@49265
|
314 |
if not (is_TVar ind_T) andalso length prems > 1 andalso
|
blanchet@49265
|
315 |
exists (exists_subterm (curry (op aconv) p)) prems andalso
|
blanchet@49265
|
316 |
not (exists (exists_subterm (curry (op aconv) a)) prems) then
|
blanchet@49265
|
317 |
SOME (p_name, ind_T)
|
blanchet@49265
|
318 |
else
|
blanchet@49265
|
319 |
NONE
|
blanchet@49265
|
320 |
| _ => NONE
|
blanchet@49265
|
321 |
|
blanchet@49265
|
322 |
fun instantiate_induct_rule ctxt concl_prop p_name ((name, stature), th) ind_x =
|
blanchet@49265
|
323 |
let
|
blanchet@49409
|
324 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@49265
|
325 |
fun varify_noninducts (t as Free (s, T)) =
|
blanchet@49265
|
326 |
if (s, T) = ind_x orelse can dest_funT T then t else Var ((s, 0), T)
|
blanchet@49265
|
327 |
| varify_noninducts t = t
|
blanchet@49265
|
328 |
val p_inst =
|
blanchet@49265
|
329 |
concl_prop |> map_aterms varify_noninducts |> close_form
|
blanchet@49265
|
330 |
|> lambda (Free ind_x)
|
blanchet@49409
|
331 |
|> hackish_string_for_term thy
|
blanchet@49265
|
332 |
in
|
blanchet@49265
|
333 |
((fn () => name () ^ "[where " ^ p_name ^ " = " ^ quote p_inst ^ "]",
|
blanchet@49265
|
334 |
stature), th |> read_instantiate ctxt [((p_name, 0), p_inst)])
|
blanchet@49265
|
335 |
end
|
blanchet@49265
|
336 |
|
blanchet@49265
|
337 |
fun type_match thy (T1, T2) =
|
blanchet@49265
|
338 |
(Sign.typ_match thy (T2, T1) Vartab.empty; true)
|
blanchet@49265
|
339 |
handle Type.TYPE_MATCH => false
|
blanchet@49265
|
340 |
|
blanchet@49265
|
341 |
fun instantiate_if_induct_rule ctxt stmt stmt_xs (ax as (_, th)) =
|
blanchet@49265
|
342 |
case struct_induct_rule_on th of
|
blanchet@49265
|
343 |
SOME (p_name, ind_T) =>
|
blanchet@49265
|
344 |
let val thy = Proof_Context.theory_of ctxt in
|
blanchet@49265
|
345 |
stmt_xs |> filter (fn (_, T) => type_match thy (T, ind_T))
|
blanchet@49265
|
346 |
|> map_filter (try (instantiate_induct_rule ctxt stmt p_name ax))
|
blanchet@49265
|
347 |
end
|
blanchet@49265
|
348 |
| NONE => [ax]
|
blanchet@49265
|
349 |
|
blanchet@49265
|
350 |
fun external_frees t =
|
blanchet@49265
|
351 |
[] |> Term.add_frees t |> filter_out (can Name.dest_internal o fst)
|
blanchet@49265
|
352 |
|
blanchet@49265
|
353 |
fun maybe_instantiate_inducts ctxt hyp_ts concl_t =
|
blanchet@49265
|
354 |
if Config.get ctxt instantiate_inducts then
|
blanchet@49265
|
355 |
let
|
blanchet@49265
|
356 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@49265
|
357 |
val ind_stmt =
|
blanchet@49265
|
358 |
(hyp_ts |> filter_out (null o external_frees), concl_t)
|
blanchet@49265
|
359 |
|> Logic.list_implies |> Object_Logic.atomize_term thy
|
blanchet@49265
|
360 |
val ind_stmt_xs = external_frees ind_stmt
|
blanchet@49265
|
361 |
in maps (instantiate_if_induct_rule ctxt ind_stmt ind_stmt_xs) end
|
blanchet@49265
|
362 |
else
|
blanchet@49265
|
363 |
I
|
blanchet@49265
|
364 |
|
blanchet@49265
|
365 |
fun maybe_filter_no_atps ctxt =
|
blanchet@49265
|
366 |
not (Config.get ctxt ignore_no_atp) ? filter_out (No_ATPs.member ctxt o snd)
|
blanchet@49265
|
367 |
|
blanchet@49411
|
368 |
fun all_facts ctxt ho_atp reserved add_ths chained css =
|
blanchet@49266
|
369 |
let
|
blanchet@49266
|
370 |
val thy = Proof_Context.theory_of ctxt
|
blanchet@49266
|
371 |
val global_facts = Global_Theory.facts_of thy
|
blanchet@49266
|
372 |
val local_facts = Proof_Context.facts_of ctxt
|
blanchet@49266
|
373 |
val named_locals = local_facts |> Facts.dest_static []
|
blanchet@49266
|
374 |
val assms = Assumption.all_assms_of ctxt
|
blanchet@49266
|
375 |
fun is_good_unnamed_local th =
|
blanchet@49266
|
376 |
not (Thm.has_name_hint th) andalso
|
blanchet@49266
|
377 |
forall (fn (_, ths) => not (member Thm.eq_thm_prop ths th)) named_locals
|
blanchet@49266
|
378 |
val unnamed_locals =
|
blanchet@49411
|
379 |
union Thm.eq_thm_prop (Facts.props local_facts) chained
|
blanchet@49266
|
380 |
|> filter is_good_unnamed_local |> map (pair "" o single)
|
blanchet@49266
|
381 |
val full_space =
|
blanchet@49266
|
382 |
Name_Space.merge (Facts.space_of global_facts, Facts.space_of local_facts)
|
blanchet@49266
|
383 |
fun add_facts global foldx facts =
|
blanchet@49266
|
384 |
foldx (fn (name0, ths) =>
|
blanchet@49342
|
385 |
if name0 <> "" andalso
|
blanchet@49266
|
386 |
forall (not o member Thm.eq_thm_prop add_ths) ths andalso
|
blanchet@49266
|
387 |
(Facts.is_concealed facts name0 orelse
|
blanchet@49342
|
388 |
not (can (Proof_Context.get_thms ctxt) name0) orelse
|
blanchet@49266
|
389 |
(not (Config.get ctxt ignore_no_atp) andalso
|
blanchet@49266
|
390 |
is_package_def name0) orelse
|
blanchet@49266
|
391 |
exists (fn s => String.isSuffix s name0)
|
blanchet@49266
|
392 |
(multi_base_blacklist ctxt ho_atp)) then
|
blanchet@49266
|
393 |
I
|
blanchet@49266
|
394 |
else
|
blanchet@49266
|
395 |
let
|
blanchet@49266
|
396 |
val multi = length ths > 1
|
blanchet@49266
|
397 |
fun check_thms a =
|
blanchet@49266
|
398 |
case try (Proof_Context.get_thms ctxt) a of
|
blanchet@49266
|
399 |
NONE => false
|
blanchet@49266
|
400 |
| SOME ths' => eq_list Thm.eq_thm_prop (ths, ths')
|
blanchet@49266
|
401 |
in
|
blanchet@49266
|
402 |
pair 1
|
blanchet@49266
|
403 |
#> fold (fn th => fn (j, (multis, unis)) =>
|
blanchet@49266
|
404 |
(j + 1,
|
blanchet@49266
|
405 |
if not (member Thm.eq_thm_prop add_ths th) andalso
|
blanchet@49342
|
406 |
is_theorem_bad_for_atps ho_atp th then
|
blanchet@49266
|
407 |
(multis, unis)
|
blanchet@49266
|
408 |
else
|
blanchet@49266
|
409 |
let
|
blanchet@49266
|
410 |
val new =
|
blanchet@49266
|
411 |
(((fn () =>
|
blanchet@49342
|
412 |
if name0 = "" then
|
blanchet@49409
|
413 |
backquote_thm th
|
blanchet@49342
|
414 |
else
|
blanchet@49342
|
415 |
[Facts.extern ctxt facts name0,
|
blanchet@49342
|
416 |
Name_Space.extern ctxt full_space name0]
|
blanchet@49342
|
417 |
|> find_first check_thms
|
blanchet@49342
|
418 |
|> the_default name0
|
blanchet@49342
|
419 |
|> make_name reserved multi j),
|
blanchet@49411
|
420 |
stature_of_thm global assms chained css name0
|
blanchet@49411
|
421 |
th), th)
|
blanchet@49266
|
422 |
in
|
blanchet@49266
|
423 |
if multi then (new :: multis, unis)
|
blanchet@49266
|
424 |
else (multis, new :: unis)
|
blanchet@49266
|
425 |
end)) ths
|
blanchet@49266
|
426 |
#> snd
|
blanchet@49266
|
427 |
end)
|
blanchet@49266
|
428 |
in
|
blanchet@49266
|
429 |
(* The single-name theorems go after the multiple-name ones, so that single
|
blanchet@49266
|
430 |
names are preferred when both are available. *)
|
blanchet@49266
|
431 |
([], []) |> add_facts false fold local_facts (unnamed_locals @ named_locals)
|
blanchet@49266
|
432 |
|> add_facts true Facts.fold_static global_facts global_facts
|
blanchet@49266
|
433 |
|> op @
|
blanchet@49266
|
434 |
end
|
blanchet@49266
|
435 |
|
blanchet@49411
|
436 |
fun all_facts_of ctxt css =
|
blanchet@49411
|
437 |
all_facts ctxt false Symtab.empty [] [] css
|
blanchet@49411
|
438 |
|> rev (* partly restore the original order of facts, for MaSh *)
|
blanchet@49266
|
439 |
|
blanchet@49411
|
440 |
fun nearly_all_facts ctxt ho_atp {add, del, only} reserved css chained hyp_ts
|
blanchet@49411
|
441 |
concl_t =
|
blanchet@49265
|
442 |
if only andalso null add then
|
blanchet@49265
|
443 |
[]
|
blanchet@49265
|
444 |
else
|
blanchet@49265
|
445 |
let
|
blanchet@49411
|
446 |
val chained =
|
blanchet@49411
|
447 |
chained
|
blanchet@49307
|
448 |
|> maps (fn th => insert Thm.eq_thm_prop (zero_var_indexes th) [th])
|
blanchet@49265
|
449 |
in
|
blanchet@49265
|
450 |
(if only then
|
blanchet@49265
|
451 |
maps (map (fn ((name, stature), th) => ((K name, stature), th))
|
blanchet@49411
|
452 |
o fact_from_ref ctxt reserved chained css) add
|
blanchet@49265
|
453 |
else
|
blanchet@49307
|
454 |
let val (add, del) = pairself (Attrib.eval_thms ctxt) (add, del) in
|
blanchet@49411
|
455 |
all_facts ctxt ho_atp reserved add chained css
|
blanchet@49307
|
456 |
|> filter_out (member Thm.eq_thm_prop del o snd)
|
blanchet@49307
|
457 |
|> maybe_filter_no_atps ctxt
|
blanchet@49347
|
458 |
|> uniquify
|
blanchet@49307
|
459 |
end)
|
blanchet@49265
|
460 |
|> maybe_instantiate_inducts ctxt hyp_ts concl_t
|
blanchet@49265
|
461 |
end
|
blanchet@49265
|
462 |
|
blanchet@49265
|
463 |
end;
|