src/HOL/Tools/Sledgehammer/sledgehammer_filter.ML
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(*  Title:      HOL/Tools/Sledgehammer/sledgehammer_filter.ML
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    Author:     Jia Meng, Cambridge University Computer Laboratory and NICTA
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    Author:     Jasmin Blanchette, TU Muenchen
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Sledgehammer's relevance filter.
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*)
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signature SLEDGEHAMMER_FILTER =
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sig
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  type locality = ATP_Translate.locality
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  type relevance_fudge =
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    {local_const_multiplier : real,
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     worse_irrel_freq : real,
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     higher_order_irrel_weight : real,
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     abs_rel_weight : real,
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     abs_irrel_weight : real,
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     skolem_irrel_weight : real,
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     theory_const_rel_weight : real,
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     theory_const_irrel_weight : real,
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     chained_const_irrel_weight : real,
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     intro_bonus : real,
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     elim_bonus : real,
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     simp_bonus : real,
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     local_bonus : real,
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     assum_bonus : real,
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     chained_bonus : real,
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     max_imperfect : real,
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     max_imperfect_exp : real,
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     threshold_divisor : real,
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     ridiculous_threshold : real}
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  type relevance_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 trace : bool Config.T
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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_relevance_override : relevance_override
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  val const_names_in_fact :
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    theory -> (string * typ -> term list -> bool * term list) -> term
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    -> string list
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  val fact_from_ref :
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    Proof.context -> unit Symtab.table -> thm list
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    -> Facts.ref * Attrib.src list -> ((string * locality) * thm) list
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  val all_facts :
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    Proof.context -> bool -> 'a Symtab.table -> bool -> thm list -> thm list
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    -> (((unit -> string) * locality) * thm) list
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  val nearly_all_facts :
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    Proof.context -> bool -> relevance_override -> thm list -> term list -> term
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    -> (((unit -> string) * locality) * thm) list
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  val relevant_facts :
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    Proof.context -> real * real -> int
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    -> (string * typ -> term list -> bool * term list) -> relevance_fudge
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    -> relevance_override -> thm list -> term list -> term
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    -> (((unit -> string) * locality) * thm) list
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    -> ((string * locality) * thm) list
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end;
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structure Sledgehammer_Filter : SLEDGEHAMMER_FILTER =
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struct
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open ATP_Translate
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open Metis_Tactic
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open Sledgehammer_Util
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val trace =
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  Attrib.setup_config_bool @{binding sledgehammer_filter_trace} (K false)
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fun trace_msg ctxt msg = if Config.get ctxt trace then tracing (msg ()) else ()
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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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type relevance_fudge =
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  {local_const_multiplier : real,
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   worse_irrel_freq : real,
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   higher_order_irrel_weight : real,
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   abs_rel_weight : real,
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   abs_irrel_weight : real,
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   skolem_irrel_weight : real,
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   theory_const_rel_weight : real,
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   theory_const_irrel_weight : real,
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   chained_const_irrel_weight : real,
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   intro_bonus : real,
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   elim_bonus : real,
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   simp_bonus : real,
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   local_bonus : real,
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   assum_bonus : real,
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   chained_bonus : real,
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   max_imperfect : real,
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   max_imperfect_exp : real,
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   threshold_divisor : real,
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   ridiculous_threshold : real}
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type relevance_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 no_relevance_override = {add = [], del = [], only = false}
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val sledgehammer_prefix = "Sledgehammer" ^ Long_Name.separator
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val abs_name = sledgehammer_prefix ^ "abs"
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val skolem_prefix = sledgehammer_prefix ^ "sko"
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val theory_const_suffix = Long_Name.separator ^ " 1"
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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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fun fact_from_ref ctxt reserved chained_ths (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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  in
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    (ths, (0, []))
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    |-> fold (fn th => fn (j, rest) =>
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                 (j + 1,
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                  ((nth_name j,
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                    if member Thm.eq_thm_prop chained_ths th then Chained
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                    else General), th) :: rest))
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    |> snd
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  end
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(* 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 Term.all) 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 string_for_term ctxt t =
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  Print_Mode.setmp (filter (curry (op =) Symbol.xsymbolsN)
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                   (print_mode_value ())) (Syntax.string_of_term ctxt) 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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(** Structural induction rules **)
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fun struct_induct_rule_on th =
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  case Logic.strip_horn (prop_of th) of
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    (prems, @{const Trueprop}
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            $ ((p as Var ((p_name, 0), _)) $ (a as Var (_, ind_T)))) =>
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    if not (is_TVar ind_T) andalso length prems > 1 andalso
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       exists (exists_subterm (curry (op aconv) p)) prems andalso
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       not (exists (exists_subterm (curry (op aconv) a)) prems) then
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      SOME (p_name, ind_T)
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    else
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      NONE
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  | _ => NONE
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fun instantiate_induct_rule ctxt concl_prop p_name ((name, loc), th) ind_x =
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  let
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    fun varify_noninducts (t as Free (s, T)) =
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        if (s, T) = ind_x orelse can dest_funT T then t else Var ((s, 0), T)
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      | varify_noninducts t = t
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    val p_inst =
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      concl_prop |> map_aterms varify_noninducts |> close_form
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                 |> lambda (Free ind_x)
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                 |> string_for_term ctxt
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  in
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    ((fn () => name () ^ "[where " ^ p_name ^ " = " ^ quote p_inst ^ "]", loc),
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     th |> read_instantiate ctxt [((p_name, 0), p_inst)])
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  end
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fun type_match thy (T1, T2) =
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  (Sign.typ_match thy (T2, T1) Vartab.empty; true)
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  handle Type.TYPE_MATCH => false
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fun instantiate_if_induct_rule ctxt stmt stmt_xs (ax as (_, th)) =
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  case struct_induct_rule_on th of
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    SOME (p_name, ind_T) =>
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    let val thy = Proof_Context.theory_of ctxt in
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      stmt_xs |> filter (fn (_, T) => type_match thy (T, ind_T))
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              |> map_filter (try (instantiate_induct_rule ctxt stmt p_name ax))
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    end
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  | NONE => [ax]
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(***************************************************************)
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(* Relevance Filtering                                         *)
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(***************************************************************)
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(*** constants with types ***)
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fun order_of_type (Type (@{type_name fun}, [T1, T2])) =
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    Int.max (order_of_type T1 + 1, order_of_type T2)
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  | order_of_type (Type (_, Ts)) = fold (Integer.max o order_of_type) Ts 0
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  | order_of_type _ = 0
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(* An abstraction of Isabelle types and first-order terms *)
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datatype pattern = PVar | PApp of string * pattern list
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datatype ptype = PType of int * pattern list
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fun string_for_pattern PVar = "_"
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  | string_for_pattern (PApp (s, ps)) =
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    if null ps then s else s ^ string_for_patterns ps
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and string_for_patterns ps = "(" ^ commas (map string_for_pattern ps) ^ ")"
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fun string_for_ptype (PType (_, ps)) = string_for_patterns ps
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(*Is the second type an instance of the first one?*)
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fun match_pattern (PVar, _) = true
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  | match_pattern (PApp _, PVar) = false
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  | match_pattern (PApp (s, ps), PApp (t, qs)) =
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    s = t andalso match_patterns (ps, qs)
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and match_patterns (_, []) = true
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  | match_patterns ([], _) = false
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  | match_patterns (p :: ps, q :: qs) =
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    match_pattern (p, q) andalso match_patterns (ps, qs)
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fun match_ptype (PType (_, ps), PType (_, qs)) = match_patterns (ps, qs)
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(* Is there a unifiable constant? *)
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fun pconst_mem f consts (s, ps) =
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  exists (curry (match_ptype o f) ps)
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         (map snd (filter (curry (op =) s o fst) consts))
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fun pconst_hyper_mem f const_tab (s, ps) =
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  exists (curry (match_ptype o f) ps) (these (Symtab.lookup const_tab s))
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fun pattern_for_type (Type (s, Ts)) = PApp (s, map pattern_for_type Ts)
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  | pattern_for_type (TFree (s, _)) = PApp (s, [])
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  | pattern_for_type (TVar _) = PVar
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(* Pairs a constant with the list of its type instantiations. *)
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fun ptype thy const x =
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  (if const then map pattern_for_type (these (try (Sign.const_typargs thy) x))
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   else [])
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fun rich_ptype thy const (s, T) =
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  PType (order_of_type T, ptype thy const (s, T))
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fun rich_pconst thy const (s, T) = (s, rich_ptype thy const (s, T))
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fun string_for_hyper_pconst (s, ps) =
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  s ^ "{" ^ commas (map string_for_ptype ps) ^ "}"
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(* Add a pconstant to the table, but a [] entry means a standard
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   connective, which we ignore.*)
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fun add_pconst_to_table also_skolem (s, p) =
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  if (not also_skolem andalso String.isPrefix skolem_prefix s) then I
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  else Symtab.map_default (s, [p]) (insert (op =) p)
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fun add_pconsts_in_term thy is_built_in_const also_skolems pos =
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  let
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    val flip = Option.map not
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    (* We include free variables, as well as constants, to handle locales. For
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       each quantifiers that must necessarily be skolemized by the automatic
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       prover, we introduce a fresh constant to simulate the effect of
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       Skolemization. *)
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    fun do_const const x ts =
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      let val (built_in, ts) = is_built_in_const x ts in
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        (not built_in
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         ? add_pconst_to_table also_skolems (rich_pconst thy const x))
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        #> fold (do_term false) ts
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      end
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    and do_term ext_arg t =
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      case strip_comb t of
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        (Const x, ts) => do_const true x ts
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      | (Free x, ts) => do_const false x ts
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      | (Abs (_, T, t'), ts) =>
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        ((null ts andalso not ext_arg)
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         (* Since lambdas on the right-hand side of equalities are usually
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            extensionalized later by "extensionalize_term", we don't penalize
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            them here. *)
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         ? add_pconst_to_table true (abs_name, PType (order_of_type T + 1, [])))
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        #> fold (do_term false) (t' :: ts)
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      | (_, ts) => fold (do_term false) ts
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    fun do_quantifier will_surely_be_skolemized abs_T body_t =
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      do_formula pos body_t
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      #> (if also_skolems andalso will_surely_be_skolemized then
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            add_pconst_to_table true
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                (legacy_gensym skolem_prefix, PType (order_of_type abs_T, []))
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          else
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            I)
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    and do_term_or_formula ext_arg T =
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      if T = HOLogic.boolT then do_formula NONE else do_term ext_arg
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    and do_formula pos t =
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      case t of
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        Const (@{const_name all}, _) $ Abs (_, T, t') =>
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        do_quantifier (pos = SOME false) T t'
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      | @{const "==>"} $ t1 $ t2 =>
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        do_formula (flip pos) t1 #> do_formula pos t2
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      | Const (@{const_name "=="}, Type (_, [T, _])) $ t1 $ t2 =>
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        do_term_or_formula false T t1 #> do_term_or_formula true T t2
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      | @{const Trueprop} $ t1 => do_formula pos t1
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      | @{const False} => I
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      | @{const True} => I
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      | @{const Not} $ t1 => do_formula (flip pos) t1
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      | Const (@{const_name All}, _) $ Abs (_, T, t') =>
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        do_quantifier (pos = SOME false) T t'
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      | Const (@{const_name Ex}, _) $ Abs (_, T, t') =>
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        do_quantifier (pos = SOME true) T t'
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      | @{const HOL.conj} $ t1 $ t2 => fold (do_formula pos) [t1, t2]
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      | @{const HOL.disj} $ t1 $ t2 => fold (do_formula pos) [t1, t2]
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      | @{const HOL.implies} $ t1 $ t2 =>
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        do_formula (flip pos) t1 #> do_formula pos t2
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      | Const (@{const_name HOL.eq}, Type (_, [T, _])) $ t1 $ t2 =>
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        do_term_or_formula false T t1 #> do_term_or_formula true T t2
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      | Const (@{const_name If}, Type (_, [_, Type (_, [T, _])]))
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        $ t1 $ t2 $ t3 =>
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        do_formula NONE t1 #> fold (do_term_or_formula false T) [t2, t3]
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      | Const (@{const_name Ex1}, _) $ Abs (_, T, t') =>
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        do_quantifier (is_some pos) T t'
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      | Const (@{const_name Ball}, _) $ t1 $ Abs (_, T, t') =>
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        do_quantifier (pos = SOME false) T
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                      (HOLogic.mk_imp (incr_boundvars 1 t1 $ Bound 0, t'))
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      | Const (@{const_name Bex}, _) $ t1 $ Abs (_, T, t') =>
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        do_quantifier (pos = SOME true) T
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                      (HOLogic.mk_conj (incr_boundvars 1 t1 $ Bound 0, t'))
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      | (t0 as Const (_, @{typ bool})) $ t1 =>
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        do_term false t0 #> do_formula pos t1  (* theory constant *)
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      | _ => do_term false t
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  in do_formula pos end
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(*Inserts a dummy "constant" referring to the theory name, so that relevance
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  takes the given theory into account.*)
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fun theory_constify ({theory_const_rel_weight, theory_const_irrel_weight, ...}
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                     : relevance_fudge) thy_name t =
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  if exists (curry (op <) 0.0) [theory_const_rel_weight,
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                                theory_const_irrel_weight] then
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    Const (thy_name ^ theory_const_suffix, @{typ bool}) $ t
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  else
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    t
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fun theory_const_prop_of fudge th =
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  theory_constify fudge (Context.theory_name (theory_of_thm th)) (prop_of th)
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(**** Constant / Type Frequencies ****)
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(* A two-dimensional symbol table counts frequencies of constants. It's keyed
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   first by constant name and second by its list of type instantiations. For the
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   latter, we need a linear ordering on "pattern list". *)
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fun pattern_ord p =
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  case p of
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    (PVar, PVar) => EQUAL
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  | (PVar, PApp _) => LESS
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  | (PApp _, PVar) => GREATER
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  | (PApp q1, PApp q2) =>
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    prod_ord fast_string_ord (dict_ord pattern_ord) (q1, q2)
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fun ptype_ord (PType p, PType q) =
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  prod_ord (dict_ord pattern_ord) int_ord (swap p, swap q)
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structure PType_Tab = Table(type key = ptype val ord = ptype_ord)
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fun count_fact_consts thy fudge =
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  let
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    fun do_const const (s, T) ts =
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      (* Two-dimensional table update. Constant maps to types maps to count. *)
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      PType_Tab.map_default (rich_ptype thy const (s, T), 0) (Integer.add 1)
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      |> Symtab.map_default (s, PType_Tab.empty)
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      #> fold do_term ts
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    and do_term t =
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      case strip_comb t of
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        (Const x, ts) => do_const true x ts
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      | (Free x, ts) => do_const false x ts
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      | (Abs (_, _, t'), ts) => fold do_term (t' :: ts)
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      | (_, ts) => fold do_term ts
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  in do_term o theory_const_prop_of fudge o snd end
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(**** Actual Filtering Code ****)
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fun pow_int _ 0 = 1.0
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  | pow_int x 1 = x
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  | pow_int x n = if n > 0 then x * pow_int x (n - 1) else pow_int x (n + 1) / x
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(*The frequency of a constant is the sum of those of all instances of its type.*)
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fun pconst_freq match const_tab (c, ps) =
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  PType_Tab.fold (fn (qs, m) => match (ps, qs) ? Integer.add m)
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                 (the (Symtab.lookup const_tab c)) 0
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(* A surprising number of theorems contain only a few significant constants.
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   These include all induction rules, and other general theorems. *)
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(* "log" seems best in practice. A constant function of one ignores the constant
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   frequencies. Rare constants give more points if they are relevant than less
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   rare ones. *)
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fun rel_weight_for _ freq = 1.0 + 2.0 / Math.ln (Real.fromInt freq + 1.0)
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   419
(* Irrelevant constants are treated differently. We associate lower penalties to
2b93dbc07778 improve weighting of irrelevant constants, based on Mirabelle experiments
blanchet
parents: 38937
diff changeset
   420
   very rare constants and very common ones -- the former because they can't
2b93dbc07778 improve weighting of irrelevant constants, based on Mirabelle experiments
blanchet
parents: 38937
diff changeset
   421
   lead to the inclusion of too many new facts, and the latter because they are
2b93dbc07778 improve weighting of irrelevant constants, based on Mirabelle experiments
blanchet
parents: 38937
diff changeset
   422
   so common as to be of little interest. *)
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   423
fun irrel_weight_for ({worse_irrel_freq, higher_order_irrel_weight, ...}
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   424
                      : relevance_fudge) order freq =
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   425
  let val (k, x) = worse_irrel_freq |> `Real.ceil in
38939
f0aa0c49fdbf add a penalty for being higher-order
blanchet
parents: 38938
diff changeset
   426
    (if freq < k then Math.ln (Real.fromInt (freq + 1)) / Math.ln x
f0aa0c49fdbf add a penalty for being higher-order
blanchet
parents: 38938
diff changeset
   427
     else rel_weight_for order freq / rel_weight_for order k)
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   428
    * pow_int higher_order_irrel_weight (order - 1)
38938
2b93dbc07778 improve weighting of irrelevant constants, based on Mirabelle experiments
blanchet
parents: 38937
diff changeset
   429
  end
37503
c2dfa26b9da6 cosmetics + prevent consideration of inlined Skolem terms in relevance filter
blanchet
parents: 37502
diff changeset
   430
41790
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   431
fun multiplier_for_const_name local_const_multiplier s =
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   432
  if String.isSubstring "." s then 1.0 else local_const_multiplier
38821
d0275b6c4e9d avoid needless "that" fact
blanchet
parents: 38820
diff changeset
   433
41790
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   434
(* Computes a constant's weight, as determined by its frequency. *)
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   435
fun generic_pconst_weight local_const_multiplier abs_weight skolem_weight
42735
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   436
                          theory_const_weight chained_const_weight weight_for f
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   437
                          const_tab chained_const_tab (c as (s, PType (m, _))) =
41790
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   438
  if s = abs_name then
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   439
    abs_weight
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   440
  else if String.isPrefix skolem_prefix s then
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   441
    skolem_weight
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   442
  else if String.isSuffix theory_const_suffix s then
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   443
    theory_const_weight
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   444
  else
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   445
    multiplier_for_const_name local_const_multiplier s
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   446
    * weight_for m (pconst_freq (match_ptype o f) const_tab c)
42735
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   447
    |> (if chained_const_weight < 1.0 andalso
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   448
           pconst_hyper_mem I chained_const_tab c then
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   449
          curry (op *) chained_const_weight
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   450
        else
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   451
          I)
41790
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   452
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   453
fun rel_pconst_weight ({local_const_multiplier, abs_rel_weight,
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   454
                        theory_const_rel_weight, ...} : relevance_fudge)
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   455
                      const_tab =
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   456
  generic_pconst_weight local_const_multiplier abs_rel_weight 0.0
42735
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   457
                        theory_const_rel_weight 0.0 rel_weight_for I const_tab
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   458
                        Symtab.empty
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   459
41790
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   460
fun irrel_pconst_weight (fudge as {local_const_multiplier, abs_irrel_weight,
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   461
                                   skolem_irrel_weight,
42735
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   462
                                   theory_const_irrel_weight,
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   463
                                   chained_const_irrel_weight, ...})
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   464
                        const_tab chained_const_tab =
41790
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   465
  generic_pconst_weight local_const_multiplier abs_irrel_weight
56dcd46ddf7a give more weight to Frees than to Consts in relevance filter
blanchet
parents: 41768
diff changeset
   466
                        skolem_irrel_weight theory_const_irrel_weight
42735
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   467
                        chained_const_irrel_weight (irrel_weight_for fudge) swap
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   468
                        const_tab chained_const_tab
24287
c857dac06da6 combining the relevance filter with res_atp
paulson
parents: 24286
diff changeset
   469
43421
926bfe067a32 fixed soundness bug related to extensionality
blanchet
parents: 43351
diff changeset
   470
fun locality_bonus ({intro_bonus, ...} : relevance_fudge) Intro = intro_bonus
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   471
  | locality_bonus {elim_bonus, ...} Elim = elim_bonus
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   472
  | locality_bonus {simp_bonus, ...} Simp = simp_bonus
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   473
  | locality_bonus {local_bonus, ...} Local = local_bonus
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   474
  | locality_bonus {assum_bonus, ...} Assum = assum_bonus
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   475
  | locality_bonus {chained_bonus, ...} Chained = chained_bonus
43421
926bfe067a32 fixed soundness bug related to extensionality
blanchet
parents: 43351
diff changeset
   476
  | locality_bonus _ _ = 0.0
38751
01c4d14b2a61 add a bonus for chained facts, since they are likely to be relevant;
blanchet
parents: 38749
diff changeset
   477
40418
8b73059e97a1 better detection of completely irrelevant facts
blanchet
parents: 40408
diff changeset
   478
fun is_odd_const_name s =
8b73059e97a1 better detection of completely irrelevant facts
blanchet
parents: 40408
diff changeset
   479
  s = abs_name orelse String.isPrefix skolem_prefix s orelse
8b73059e97a1 better detection of completely irrelevant facts
blanchet
parents: 40408
diff changeset
   480
  String.isSuffix theory_const_suffix s
8b73059e97a1 better detection of completely irrelevant facts
blanchet
parents: 40408
diff changeset
   481
42732
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   482
fun fact_weight fudge loc const_tab relevant_consts chained_consts fact_consts =
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   483
  case fact_consts |> List.partition (pconst_hyper_mem I relevant_consts)
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   484
                   ||> filter_out (pconst_hyper_mem swap relevant_consts) of
38827
cf01645cbbce extended relevance filter with first-order term matching
blanchet
parents: 38825
diff changeset
   485
    ([], _) => 0.0
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   486
  | (rel, irrel) =>
40418
8b73059e97a1 better detection of completely irrelevant facts
blanchet
parents: 40408
diff changeset
   487
    if forall (forall (is_odd_const_name o fst)) [rel, irrel] then
40371
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   488
      0.0
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   489
    else
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   490
      let
42735
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   491
        val irrel = irrel |> filter_out (pconst_mem swap rel)
40371
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   492
        val rel_weight =
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   493
          0.0 |> fold (curry (op +) o rel_pconst_weight fudge const_tab) rel
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   494
        val irrel_weight =
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   495
          ~ (locality_bonus fudge loc)
42735
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   496
          |> fold (curry (op +)
1d375de437e9 fine-tuned the relevance filter, so that equations of the form "c = (%x. _)" and constants occurring in chained facts are not unduely penalized
blanchet
parents: 42732
diff changeset
   497
                   o irrel_pconst_weight fudge const_tab chained_consts) irrel
40371
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   498
        val res = rel_weight / (rel_weight + irrel_weight)
8fe3c26c49af ignore facts with only theory constants in them
blanchet
parents: 40369
diff changeset
   499
      in if Real.isFinite res then res else 0.0 end
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   500
40369
53dca3bd4250 use the SMT integration's official list of built-ins
blanchet
parents: 40251
diff changeset
   501
fun pconsts_in_fact thy is_built_in_const t =
38825
4ec3cbd95f25 rename and simplify
blanchet
parents: 38824
diff changeset
   502
  Symtab.fold (fn (s, pss) => fold (cons o pair s) pss)
42732
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   503
              (Symtab.empty |> add_pconsts_in_term thy is_built_in_const true
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   504
                                                   (SOME true) t) []
42729
e011f632227c tune whitespace
blanchet
parents: 42728
diff changeset
   505
40369
53dca3bd4250 use the SMT integration's official list of built-ins
blanchet
parents: 40251
diff changeset
   506
fun pair_consts_fact thy is_built_in_const fudge fact =
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   507
  case fact |> snd |> theory_const_prop_of fudge
40369
53dca3bd4250 use the SMT integration's official list of built-ins
blanchet
parents: 40251
diff changeset
   508
            |> pconsts_in_fact thy is_built_in_const of
38827
cf01645cbbce extended relevance filter with first-order term matching
blanchet
parents: 38825
diff changeset
   509
    [] => NONE
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   510
  | consts => SOME ((fact, consts), NONE)
24287
c857dac06da6 combining the relevance filter with res_atp
paulson
parents: 24286
diff changeset
   511
41768
dd2125fb75f9 export more functionality of Sledgehammer to applications (for experiments)
blanchet
parents: 41767
diff changeset
   512
val const_names_in_fact = map fst ooo pconsts_in_fact
dd2125fb75f9 export more functionality of Sledgehammer to applications (for experiments)
blanchet
parents: 41767
diff changeset
   513
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   514
type annotated_thm =
38939
f0aa0c49fdbf add a penalty for being higher-order
blanchet
parents: 38938
diff changeset
   515
  (((unit -> string) * locality) * thm) * (string * ptype) list
37505
d9af5c01dc4a added code to optionally perform fact filtering on the original (non-CNF) formulas
blanchet
parents: 37504
diff changeset
   516
42646
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   517
fun take_most_relevant ctxt max_relevant remaining_max
42728
44cd74a419ce added configuration options for experimental features
blanchet
parents: 42702
diff changeset
   518
        ({max_imperfect, max_imperfect_exp, ...} : relevance_fudge)
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   519
        (candidates : (annotated_thm * real) list) =
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   520
  let
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   521
    val max_imperfect =
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   522
      Real.ceil (Math.pow (max_imperfect,
38904
5e760c0f81a6 rule out low-level class facts
blanchet
parents: 38901
diff changeset
   523
                    Math.pow (Real.fromInt remaining_max
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   524
                              / Real.fromInt max_relevant, max_imperfect_exp)))
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   525
    val (perfect, imperfect) =
38889
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   526
      candidates |> sort (Real.compare o swap o pairself snd)
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   527
                 |> take_prefix (fn (_, w) => w > 0.99999)
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   528
    val ((accepts, more_rejects), rejects) =
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   529
      chop max_imperfect imperfect |>> append perfect |>> chop remaining_max
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   530
  in
42646
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   531
    trace_msg ctxt (fn () =>
41491
a2ad5b824051 eliminated Int.toString;
wenzelm
parents: 41336
diff changeset
   532
        "Actually passed (" ^ string_of_int (length accepts) ^ " of " ^
a2ad5b824051 eliminated Int.toString;
wenzelm
parents: 41336
diff changeset
   533
        string_of_int (length candidates) ^ "): " ^
38889
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   534
        (accepts |> map (fn ((((name, _), _), _), weight) =>
38752
6628adcae4a7 consider "locality" when assigning weights to facts
blanchet
parents: 38751
diff changeset
   535
                            name () ^ " [" ^ Real.toString weight ^ "]")
38745
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   536
                 |> commas));
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   537
    (accepts, more_rejects @ rejects)
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   538
  end
24287
c857dac06da6 combining the relevance filter with res_atp
paulson
parents: 24286
diff changeset
   539
40369
53dca3bd4250 use the SMT integration's official list of built-ins
blanchet
parents: 40251
diff changeset
   540
fun if_empty_replace_with_locality thy is_built_in_const facts loc tab =
38819
71c9f61516cd if the goal contains no constants or frees, fall back on chained facts, then on local facts, etc., instead of generating a trivial ATP problem
blanchet
parents: 38818
diff changeset
   541
  if Symtab.is_empty tab then
42732
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   542
    Symtab.empty
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   543
    |> fold (add_pconsts_in_term thy is_built_in_const false (SOME false))
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   544
            (map_filter (fn ((_, loc'), th) =>
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   545
                            if loc' = loc then SOME (prop_of th) else NONE)
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   546
                        facts)
38819
71c9f61516cd if the goal contains no constants or frees, fall back on chained facts, then on local facts, etc., instead of generating a trivial ATP problem
blanchet
parents: 38818
diff changeset
   547
  else
71c9f61516cd if the goal contains no constants or frees, fall back on chained facts, then on local facts, etc., instead of generating a trivial ATP problem
blanchet
parents: 38818
diff changeset
   548
    tab
71c9f61516cd if the goal contains no constants or frees, fall back on chained facts, then on local facts, etc., instead of generating a trivial ATP problem
blanchet
parents: 38818
diff changeset
   549
42702
blanchet
parents: 42680
diff changeset
   550
fun consider_arities is_built_in_const th =
41158
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   551
  let
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   552
    fun aux _ _ NONE = NONE
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   553
      | aux t args (SOME tab) =
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   554
        case t of
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   555
          t1 $ t2 => SOME tab |> aux t1 (t2 :: args) |> aux t2 []
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   556
        | Const (x as (s, _)) =>
41336
0ea5b9c7d233 proper handling of the arguments of SMT builtins -- for numerals, ignore the arguments (Pls, Bit0, Bit1, ..), for functions, consider them;
blanchet
parents: 41279
diff changeset
   557
          (if is_built_in_const x args |> fst then
41158
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   558
             SOME tab
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   559
           else case Symtab.lookup tab s of
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   560
             NONE => SOME (Symtab.update (s, length args) tab)
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   561
           | SOME n => if n = length args then SOME tab else NONE)
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   562
        | _ => SOME tab
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   563
  in aux (prop_of th) [] end
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   564
44785
f4975fa4a2f8 parse new experimental '@' encodings
blanchet
parents: 44783
diff changeset
   565
(* FIXME: This is currently only useful for polymorphic type encodings. *)
42702
blanchet
parents: 42680
diff changeset
   566
fun could_benefit_from_ext is_built_in_const facts =
blanchet
parents: 42680
diff changeset
   567
  fold (consider_arities is_built_in_const o snd) facts (SOME Symtab.empty)
41158
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   568
  |> is_none
8c9c31a757f5 make Sledgehammer's relevance filter include the "ext" rule when appropriate
blanchet
parents: 41140
diff changeset
   569
43492
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   570
(* High enough so that it isn't wrongly considered as very relevant (e.g., for E
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   571
   weights), but low enough so that it is unlikely to be truncated away if few
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   572
   facts are included. *)
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   573
val special_fact_index = 75
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   574
44625
4a1132815a70 more tuning
blanchet
parents: 44586
diff changeset
   575
fun relevance_filter ctxt threshold0 decay max_relevant is_built_in_const
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   576
        (fudge as {threshold_divisor, ridiculous_threshold, ...})
42732
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   577
        ({add, del, ...} : relevance_override) facts chained_ts hyp_ts concl_t =
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   578
  let
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42358
diff changeset
   579
    val thy = Proof_Context.theory_of ctxt
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   580
    val const_tab = fold (count_fact_consts thy fudge) facts Symtab.empty
42732
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   581
    val add_pconsts = add_pconsts_in_term thy is_built_in_const false o SOME
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   582
    val chained_const_tab = Symtab.empty |> fold (add_pconsts true) chained_ts
38819
71c9f61516cd if the goal contains no constants or frees, fall back on chained facts, then on local facts, etc., instead of generating a trivial ATP problem
blanchet
parents: 38818
diff changeset
   583
    val goal_const_tab =
42732
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   584
      Symtab.empty |> fold (add_pconsts true) hyp_ts
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   585
                   |> add_pconsts false concl_t
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   586
      |> (fn tab => if Symtab.is_empty tab then chained_const_tab else tab)
40369
53dca3bd4250 use the SMT integration's official list of built-ins
blanchet
parents: 40251
diff changeset
   587
      |> fold (if_empty_replace_with_locality thy is_built_in_const facts)
38993
504b9e1efd33 give priority to assumptions in structured proofs
blanchet
parents: 38992
diff changeset
   588
              [Chained, Assum, Local]
39012
96d97d1c676f cosmetics
blanchet
parents: 38997
diff changeset
   589
    val add_ths = Attrib.eval_thms ctxt add
96d97d1c676f cosmetics
blanchet
parents: 38997
diff changeset
   590
    val del_ths = Attrib.eval_thms ctxt del
42957
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   591
    val facts = facts |> filter_out (member Thm.eq_thm_prop del_ths o snd)
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   592
    fun iter j remaining_max threshold rel_const_tab hopeless hopeful =
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   593
      let
40191
257d2e06bfb8 put theorems added using "add:" at the beginning of the list returned by the relevance filter, so that they don't get truncated away
blanchet
parents: 40071
diff changeset
   594
        fun relevant [] _ [] =
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   595
            (* Nothing has been added this iteration. *)
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   596
            if j = 0 andalso threshold >= ridiculous_threshold then
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   597
              (* First iteration? Try again. *)
40070
bdb890782d4a replaced references with proper record that's threaded through
blanchet
parents: 39958
diff changeset
   598
              iter 0 max_relevant (threshold / threshold_divisor) rel_const_tab
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   599
                   hopeless hopeful
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   600
            else
40191
257d2e06bfb8 put theorems added using "add:" at the beginning of the list returned by the relevance filter, so that they don't get truncated away
blanchet
parents: 40071
diff changeset
   601
              []
38889
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   602
          | relevant candidates rejects [] =
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   603
            let
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   604
              val (accepts, more_rejects) =
42646
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   605
                take_most_relevant ctxt max_relevant remaining_max fudge
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   606
                                   candidates
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   607
              val rel_const_tab' =
38745
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   608
                rel_const_tab
41066
3890ef4e02f9 pass constant arguments to the built-in check function, cf. d2b1fc1b8e19
blanchet
parents: 40418
diff changeset
   609
                |> fold (add_pconst_to_table false) (maps (snd o fst) accepts)
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   610
              fun is_dirty (c, _) =
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   611
                Symtab.lookup rel_const_tab' c <> Symtab.lookup rel_const_tab c
38745
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   612
              val (hopeful_rejects, hopeless_rejects) =
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   613
                 (rejects @ hopeless, ([], []))
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   614
                 |-> fold (fn (ax as (_, consts), old_weight) =>
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   615
                              if exists is_dirty consts then
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   616
                                apfst (cons (ax, NONE))
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   617
                              else
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   618
                                apsnd (cons (ax, old_weight)))
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   619
                 |>> append (more_rejects
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   620
                             |> map (fn (ax as (_, consts), old_weight) =>
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   621
                                        (ax, if exists is_dirty consts then NONE
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   622
                                             else SOME old_weight)))
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   623
              val threshold =
38822
aa0101e618e2 fix threshold computation + remove "op =" from relevant constants
blanchet
parents: 38821
diff changeset
   624
                1.0 - (1.0 - threshold)
aa0101e618e2 fix threshold computation + remove "op =" from relevant constants
blanchet
parents: 38821
diff changeset
   625
                      * Math.pow (decay, Real.fromInt (length accepts))
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   626
              val remaining_max = remaining_max - length accepts
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   627
            in
42646
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   628
              trace_msg ctxt (fn () => "New or updated constants: " ^
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   629
                  commas (rel_const_tab' |> Symtab.dest
38822
aa0101e618e2 fix threshold computation + remove "op =" from relevant constants
blanchet
parents: 38821
diff changeset
   630
                          |> subtract (op =) (rel_const_tab |> Symtab.dest)
38827
cf01645cbbce extended relevance filter with first-order term matching
blanchet
parents: 38825
diff changeset
   631
                          |> map string_for_hyper_pconst));
38745
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   632
              map (fst o fst) accepts @
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   633
              (if remaining_max = 0 then
40191
257d2e06bfb8 put theorems added using "add:" at the beginning of the list returned by the relevance filter, so that they don't get truncated away
blanchet
parents: 40071
diff changeset
   634
                 []
38745
ad577fd62ee4 reorganize options regarding to the relevance threshold and decay
blanchet
parents: 38744
diff changeset
   635
               else
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   636
                 iter (j + 1) remaining_max threshold rel_const_tab'
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   637
                      hopeless_rejects hopeful_rejects)
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   638
            end
38889
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   639
          | relevant candidates rejects
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   640
                     (((ax as (((_, loc), _), fact_consts)), cached_weight)
38747
b264ae66cede fiddle with relevance filter
blanchet
parents: 38745
diff changeset
   641
                      :: hopeful) =
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   642
            let
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   643
              val weight =
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   644
                case cached_weight of
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   645
                  SOME w => w
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   646
                | NONE => fact_weight fudge loc const_tab rel_const_tab
42732
86683865278d no penality for constants that appear in chained facts
blanchet
parents: 42730
diff changeset
   647
                                      chained_const_tab fact_consts
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   648
            in
38741
7635bf8918a1 get rid of "defs_relevant" feature;
blanchet
parents: 38739
diff changeset
   649
              if weight >= threshold then
38889
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   650
                relevant ((ax, weight) :: candidates) rejects hopeful
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   651
              else
38889
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   652
                relevant candidates ((ax, weight) :: rejects) hopeful
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   653
            end
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   654
        in
42646
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   655
          trace_msg ctxt (fn () =>
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   656
              "ITERATION " ^ string_of_int j ^ ": current threshold: " ^
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   657
              Real.toString threshold ^ ", constants: " ^
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   658
              commas (rel_const_tab |> Symtab.dest
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   659
                      |> filter (curry (op <>) [] o snd)
38827
cf01645cbbce extended relevance filter with first-order term matching
blanchet
parents: 38825
diff changeset
   660
                      |> map string_for_hyper_pconst));
38889
d0e3f68dde63 fiddle with the relevance filter
blanchet
parents: 38829
diff changeset
   661
          relevant [] [] hopeful
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   662
        end
42826
be0e66ccebfa append special boring facts rather than prepend them, to avoid confusing E's weighting mechanism
blanchet
parents: 42812
diff changeset
   663
    fun prepend_facts ths accepts =
42957
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   664
      ((facts |> filter (member Thm.eq_thm_prop ths o snd)) @
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   665
       (accepts |> filter_out (member Thm.eq_thm_prop ths o snd)))
40408
0d0acdf068b8 always honor the max relevant constraint
blanchet
parents: 40375
diff changeset
   666
      |> take max_relevant
43492
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   667
    fun insert_into_facts accepts [] = accepts
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   668
      | insert_into_facts accepts ths =
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   669
        let
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   670
          val add = facts |> filter (member Thm.eq_thm_prop ths o snd)
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   671
          val (bef, after) =
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   672
            accepts |> filter_out (member Thm.eq_thm_prop ths o snd)
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   673
                    |> take (max_relevant - length add)
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   674
                    |> chop special_fact_index
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   675
        in bef @ add @ after end
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   676
    fun insert_special_facts accepts =
43066
e0d4841c5b4a fixed bug in appending special facts introduced in be0e66ccebfa -- if several special facts were added, they overwrote each other
blanchet
parents: 42957
diff changeset
   677
       [] |> could_benefit_from_ext is_built_in_const accepts ? cons @{thm ext}
43492
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   678
          |> insert_into_facts accepts
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   679
  in
40369
53dca3bd4250 use the SMT integration's official list of built-ins
blanchet
parents: 40251
diff changeset
   680
    facts |> map_filter (pair_consts_fact thy is_built_in_const fudge)
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   681
          |> iter 0 max_relevant threshold0 goal_const_tab []
42826
be0e66ccebfa append special boring facts rather than prepend them, to avoid confusing E's weighting mechanism
blanchet
parents: 42812
diff changeset
   682
          |> not (null add_ths) ? prepend_facts add_ths
43492
43326cadc31a insert rather than append special facts to make it less likely that they're truncated away
blanchet
parents: 43477
diff changeset
   683
          |> insert_special_facts
42646
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   684
          |> tap (fn accepts => trace_msg ctxt (fn () =>
41491
a2ad5b824051 eliminated Int.toString;
wenzelm
parents: 41336
diff changeset
   685
                      "Total relevant: " ^ string_of_int (length accepts)))
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   686
  end
24287
c857dac06da6 combining the relevance filter with res_atp
paulson
parents: 24286
diff changeset
   687
38744
2b6333f78a9e make relevance filter work in term of a "max_relevant" option + use Vampire SOS;
blanchet
parents: 38743
diff changeset
   688
24287
c857dac06da6 combining the relevance filter with res_atp
paulson
parents: 24286
diff changeset
   689
(***************************************************************)
19768
9afd9b9c47d0 ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents: 19746
diff changeset
   690
(* Retrieving and filtering lemmas                             *)
9afd9b9c47d0 ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents: 19746
diff changeset
   691
(***************************************************************)
9afd9b9c47d0 ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents: 19746
diff changeset
   692
33022
c95102496490 Removal of the unused atpset concept, the atp attribute and some related code.
paulson
parents: 32994
diff changeset
   693
(*** retrieve lemmas and filter them ***)
19768
9afd9b9c47d0 ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents: 19746
diff changeset
   694
20757
fe84fe0dfd30 Definitions produced by packages are now blacklisted.
paulson
parents: 20661
diff changeset
   695
(*Reject theorems with names like "List.filter.filter_list_def" or
21690
552d20ff9a95 Removal of theorem tagging, which the ATP linkup no longer requires.
paulson
parents: 21588
diff changeset
   696
  "Accessible_Part.acc.defs", as these are definitions arising from packages.*)
20757
fe84fe0dfd30 Definitions produced by packages are now blacklisted.
paulson
parents: 20661
diff changeset
   697
fun is_package_def a =
40205
277508b07418 if "debug" is on, print list of relevant facts (poweruser request);
blanchet
parents: 40204
diff changeset
   698
  let val names = Long_Name.explode a in
277508b07418 if "debug" is on, print list of relevant facts (poweruser request);
blanchet
parents: 40204
diff changeset
   699
    (length names > 2 andalso not (hd names = "local") andalso
277508b07418 if "debug" is on, print list of relevant facts (poweruser request);
blanchet
parents: 40204
diff changeset
   700
     String.isSuffix "_def" a) orelse String.isSuffix "_defs" a
277508b07418 if "debug" is on, print list of relevant facts (poweruser request);
blanchet
parents: 40204
diff changeset
   701
  end
20757
fe84fe0dfd30 Definitions produced by packages are now blacklisted.
paulson
parents: 20661
diff changeset
   702
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   703
fun uniquify xs =
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   704
  Termtab.fold (cons o snd)
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   705
               (fold (Termtab.update o `(prop_of o snd)) xs Termtab.empty) []
19768
9afd9b9c47d0 ATP/res_clasimpset.ML has been merged into res_atp.ML.
mengj
parents: 19746
diff changeset
   706
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   707
(* FIXME: put other record thms here, or declare as "no_atp" *)
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   708
fun multi_base_blacklist ctxt ho_atp =
41199
4698d12dd860 instantiate induction rules automatically
blanchet
parents: 41167
diff changeset
   709
  ["defs", "select_defs", "update_defs", "split", "splits", "split_asm",
4698d12dd860 instantiate induction rules automatically
blanchet
parents: 41167
diff changeset
   710
   "cases", "ext_cases", "eq.simps", "eq.refl", "nchotomy", "case_cong",
4698d12dd860 instantiate induction rules automatically
blanchet
parents: 41167
diff changeset
   711
   "weak_case_cong"]
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   712
  |> not (ho_atp orelse (Config.get ctxt instantiate_inducts)) ?
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   713
        append ["induct", "inducts"]
38682
3a203da3f89b weed out junk in relevance filter
blanchet
parents: 38681
diff changeset
   714
  |> map (prefix ".")
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   715
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   716
val max_lambda_nesting = 3 (*only applies if not ho_atp*)
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   717
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   718
fun term_has_too_many_lambdas max (t1 $ t2) =
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   719
    exists (term_has_too_many_lambdas max) [t1, t2]
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   720
  | term_has_too_many_lambdas max (Abs (_, _, t)) =
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   721
    max = 0 orelse term_has_too_many_lambdas (max - 1) t
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   722
  | term_has_too_many_lambdas _ _ = false
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   723
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   724
(* Don't count nested lambdas at the level of formulas, since they are
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   725
   quantifiers. *)
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   726
fun formula_has_too_many_lambdas true _ _ = false (*i.e. ho_atp*)
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   727
  | formula_has_too_many_lambdas _ Ts (Abs (_, T, t)) =
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   728
      formula_has_too_many_lambdas false (T :: Ts) t
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   729
  | formula_has_too_many_lambdas _ Ts t =
41273
35ce17cd7967 made the relevance filter treat unatomizable facts like "atomize_all" properly (these result in problems that get E spinning seemingly forever);
blanchet
parents: 41211
diff changeset
   730
    if member (op =) [HOLogic.boolT, propT] (fastype_of1 (Ts, t)) then
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   731
      exists (formula_has_too_many_lambdas false Ts) (#2 (strip_comb t))
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   732
    else
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   733
      term_has_too_many_lambdas max_lambda_nesting t
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   734
38692
89d3550d8e16 cosmetics
blanchet
parents: 38689
diff changeset
   735
(* The max apply depth of any "metis" call in "Metis_Examples" (on 2007-10-31)
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   736
   was 11. *)
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   737
val max_apply_depth = 15
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   738
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   739
fun apply_depth (f $ t) = Int.max (apply_depth f, apply_depth t + 1)
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   740
  | apply_depth (Abs (_, _, t)) = apply_depth t
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   741
  | apply_depth _ = 0
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   742
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   743
fun is_formula_too_complex ho_atp t =
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   744
  apply_depth t > max_apply_depth orelse formula_has_too_many_lambdas ho_atp [] t
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   745
39946
78faa9b31202 move Metis into Plain
blanchet
parents: 39896
diff changeset
   746
(* FIXME: Extend to "Meson" and "Metis" *)
37543
2e733b0a963c a76ace919f1c wasn't quite right; second try
blanchet
parents: 37538
diff changeset
   747
val exists_sledgehammer_const =
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   748
  exists_Const (fn (s, _) => String.isPrefix sledgehammer_prefix s)
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   749
38904
5e760c0f81a6 rule out low-level class facts
blanchet
parents: 38901
diff changeset
   750
(* FIXME: make more reliable *)
5e760c0f81a6 rule out low-level class facts
blanchet
parents: 38901
diff changeset
   751
val exists_low_level_class_const =
5e760c0f81a6 rule out low-level class facts
blanchet
parents: 38901
diff changeset
   752
  exists_Const (fn (s, _) =>
5e760c0f81a6 rule out low-level class facts
blanchet
parents: 38901
diff changeset
   753
     String.isSubstring (Long_Name.separator ^ "class" ^ Long_Name.separator) s)
5e760c0f81a6 rule out low-level class facts
blanchet
parents: 38901
diff changeset
   754
38821
d0275b6c4e9d avoid needless "that" fact
blanchet
parents: 38820
diff changeset
   755
fun is_metastrange_theorem th =
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   756
  case head_of (concl_of th) of
43576
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   757
    Const (s, _) => (s <> @{const_name Trueprop} andalso
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   758
                     s <> @{const_name "=="})
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   759
  | _ => false
37626
1146291fe718 move blacklisting completely out of the clausifier;
blanchet
parents: 37616
diff changeset
   760
38821
d0275b6c4e9d avoid needless "that" fact
blanchet
parents: 38820
diff changeset
   761
fun is_that_fact th =
d0275b6c4e9d avoid needless "that" fact
blanchet
parents: 38820
diff changeset
   762
  String.isSuffix (Long_Name.separator ^ Obtain.thatN) (Thm.get_name_hint th)
d0275b6c4e9d avoid needless "that" fact
blanchet
parents: 38820
diff changeset
   763
  andalso exists_subterm (fn Free (s, _) => s = Name.skolem Auto_Bind.thesisN
d0275b6c4e9d avoid needless "that" fact
blanchet
parents: 38820
diff changeset
   764
                           | _ => false) (prop_of th)
d0275b6c4e9d avoid needless "that" fact
blanchet
parents: 38820
diff changeset
   765
38085
cc44e887246c avoid "clause" and "cnf" terminology where it no longer makes sense
blanchet
parents: 38027
diff changeset
   766
(**** Predicates to detect unwanted facts (prolific or likely to cause
37347
635425a442e8 show more respect for user-specified facts, even if they could lead to unsound proofs + don't throw away "unsound" theorems in "full_type" mode, since they are then sound
blanchet
parents: 37345
diff changeset
   767
      unsoundness) ****)
21470
7c1b59ddcd56 Consolidation of code to "blacklist" unhelpful theorems, including record
paulson
parents: 21431
diff changeset
   768
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   769
fun is_theorem_bad_for_atps ho_atp exporter thm =
43576
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   770
  is_metastrange_theorem thm orelse
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   771
  (not exporter andalso
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   772
   let val t = prop_of thm in
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   773
     is_formula_too_complex ho_atp t orelse exists_type type_has_top_sort t orelse
43576
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   774
     exists_sledgehammer_const t orelse exists_low_level_class_const t orelse
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   775
     is_that_fact thm
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   776
   end)
38627
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   777
45301
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   778
val crude_zero_vars =
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   779
  map_aterms (fn Var ((s, _), T) => Var ((s, 0), T) | t => t)
42641
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   780
  #> map_types (map_type_tvar (fn ((s, _), S) => TVar ((s, 0), S)))
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   781
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   782
fun clasimpset_rule_table_of ctxt =
38937
1b1a2f5ccd7d take into consideration whether a fact is an "intro"/"elim"/"simp" rule as an additional factor influencing the relevance filter
blanchet
parents: 38907
diff changeset
   783
  let
45301
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   784
    val thy = Proof_Context.theory_of ctxt
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   785
    val atomize = HOLogic.mk_Trueprop o Object_Logic.atomize_term thy
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   786
    fun add loc g f =
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   787
      fold (Termtab.update o rpair loc o g o crude_zero_vars o prop_of o f)
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   788
    val {safeIs, safeEs, hazIs, hazEs, ...} =
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   789
      ctxt |> claset_of |> Classical.rep_cs
42810
2425068fe13a slightly more efficient claset operations, using Item_Net to maintain rules in canonical order;
wenzelm
parents: 42741
diff changeset
   790
    val intros = Item_Net.content safeIs @ Item_Net.content hazIs
45301
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   791
    val elims =
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   792
      Item_Net.content safeEs @ Item_Net.content hazEs
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   793
      |> map Classical.classical_rule
42641
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   794
    val simps = ctxt |> simpset_of |> dest_ss |> #simps
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   795
  in
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   796
    Termtab.empty |> add Intro I I intros
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   797
                  |> add Elim I I elims
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   798
                  |> add Simp I snd simps
45301
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   799
                  |> add Simp atomize snd simps
42641
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   800
  end
38937
1b1a2f5ccd7d take into consideration whether a fact is an "intro"/"elim"/"simp" rule as an additional factor influencing the relevance filter
blanchet
parents: 38907
diff changeset
   801
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   802
fun all_facts ctxt ho_atp reserved exporter add_ths chained_ths =
38627
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   803
  let
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42358
diff changeset
   804
    val thy = Proof_Context.theory_of ctxt
39557
fe5722fce758 renamed structure PureThy to Pure_Thy and moved most content to Global_Theory, to emphasize that this is global-only;
wenzelm
parents: 39367
diff changeset
   805
    val global_facts = Global_Theory.facts_of thy
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42358
diff changeset
   806
    val local_facts = Proof_Context.facts_of ctxt
38644
25bbbaf7ce65 don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents: 38629
diff changeset
   807
    val named_locals = local_facts |> Facts.dest_static []
38993
504b9e1efd33 give priority to assumptions in structured proofs
blanchet
parents: 38992
diff changeset
   808
    val assms = Assumption.all_assms_of ctxt
504b9e1efd33 give priority to assumptions in structured proofs
blanchet
parents: 38992
diff changeset
   809
    fun is_assum th = exists (fn ct => prop_of th aconv term_of ct) assms
42957
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   810
    val is_chained = member Thm.eq_thm_prop chained_ths
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   811
    val clasimpset_table = clasimpset_rule_table_of ctxt
45301
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   812
    fun locality_of_theorem global name th =
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   813
      if String.isSubstring ".induct" name orelse (*FIXME: use structured name*)
44586
eeba1eedf32d improved handling of induction rules in Sledgehammer
nik
parents: 44585
diff changeset
   814
         String.isSubstring ".inducts" name then
45301
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   815
        Induction
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   816
      else if is_chained th then
42641
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   817
        Chained
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   818
      else if global then
43421
926bfe067a32 fixed soundness bug related to extensionality
blanchet
parents: 43351
diff changeset
   819
        case Termtab.lookup clasimpset_table (prop_of th) of
926bfe067a32 fixed soundness bug related to extensionality
blanchet
parents: 43351
diff changeset
   820
          SOME loc => loc
44783
blanchet
parents: 44625
diff changeset
   821
        | NONE => General
45301
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   822
      else if is_assum th then
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   823
        Assum
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   824
      else
866b075aa99b added sorted DFG output for coming version of SPASS
blanchet
parents: 45034
diff changeset
   825
        Local
38738
0ce517c1970f make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents: 38699
diff changeset
   826
    fun is_good_unnamed_local th =
38820
d0f98bd81a85 add nameless chained facts to the pool of things known to Sledgehammer
blanchet
parents: 38819
diff changeset
   827
      not (Thm.has_name_hint th) andalso
42957
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   828
      forall (fn (_, ths) => not (member Thm.eq_thm_prop ths th)) named_locals
38644
25bbbaf7ce65 don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents: 38629
diff changeset
   829
    val unnamed_locals =
42957
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   830
      union Thm.eq_thm_prop (Facts.props local_facts) chained_ths
38820
d0f98bd81a85 add nameless chained facts to the pool of things known to Sledgehammer
blanchet
parents: 38819
diff changeset
   831
      |> filter is_good_unnamed_local |> map (pair "" o single)
38627
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   832
    val full_space =
38738
0ce517c1970f make sure that "undo_ascii_of" is the inverse of "ascii_of", also for non-printable characters -- and avoid those in ``-style facts
blanchet
parents: 38699
diff changeset
   833
      Name_Space.merge (Facts.space_of global_facts, Facts.space_of local_facts)
38752
6628adcae4a7 consider "locality" when assigning weights to facts
blanchet
parents: 38751
diff changeset
   834
    fun add_facts global foldx facts =
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   835
      foldx (fn (name0, ths) =>
43576
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   836
        if not exporter andalso name0 <> "" andalso
42957
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   837
           forall (not o member Thm.eq_thm_prop add_ths) ths andalso
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   838
           (Facts.is_concealed facts name0 orelse
42728
44cd74a419ce added configuration options for experimental features
blanchet
parents: 42702
diff changeset
   839
            (not (Config.get ctxt ignore_no_atp) andalso
44cd74a419ce added configuration options for experimental features
blanchet
parents: 42702
diff changeset
   840
             is_package_def name0) orelse
44cd74a419ce added configuration options for experimental features
blanchet
parents: 42702
diff changeset
   841
            exists (fn s => String.isSuffix s name0)
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   842
                   (multi_base_blacklist ctxt ho_atp) orelse
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   843
            String.isSuffix "_def_raw" (* FIXME: crude hack *) name0) then
38627
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   844
          I
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   845
        else
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   846
          let
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   847
            val multi = length ths > 1
41279
e0400b05a62c escape backticks in altstrings
blanchet
parents: 41273
diff changeset
   848
            val backquote_thm =
e0400b05a62c escape backticks in altstrings
blanchet
parents: 41273
diff changeset
   849
              backquote o string_for_term ctxt o close_form o prop_of
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   850
            fun check_thms a =
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42358
diff changeset
   851
              case try (Proof_Context.get_thms ctxt) a of
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   852
                NONE => false
42957
c693f9b7674a use "eq_thm_prop" for slacker comparison -- ensures that backtick-quoted chained facts are recognized in the minimizer, among other things
blanchet
parents: 42952
diff changeset
   853
              | SOME ths' => eq_list Thm.eq_thm_prop (ths, ths')
38627
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   854
          in
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   855
            pair 1
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   856
            #> fold (fn th => fn (j, (multis, unis)) =>
42641
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   857
                        (j + 1,
43576
ebeda6275027 don't export any metastrange or other nonatomizable formulas, since these don't help proving normal things, they are somewhat broken in the ATP output, and they are atypical
blanchet
parents: 43492
diff changeset
   858
                         if not (member Thm.eq_thm_prop add_ths th) andalso
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   859
                            is_theorem_bad_for_atps ho_atp exporter th then
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   860
                           (multis, unis)
42641
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   861
                         else
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   862
                           let
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   863
                             val new =
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   864
                               (((fn () =>
42641
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   865
                                 if name0 = "" then
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   866
                                   th |> backquote_thm
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   867
                                 else
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   868
                                   [Facts.extern ctxt facts name0,
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   869
                                    Name_Space.extern ctxt full_space name0,
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   870
                                    name0]
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   871
                                   |> find_first check_thms
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   872
                                   |> (fn SOME name =>
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   873
                                          make_name reserved multi j name
2cd4e6463842 recognize simplification rules even if they look a bit different from the theorems in the theories (meta equality, variable numbers)
blanchet
parents: 42638
diff changeset
   874
                                        | NONE => "")),
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   875
                                locality_of_theorem global name0 th), th)
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   876
                           in
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   877
                             if multi then (new :: multis, unis)
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   878
                             else (multis, new :: unis)
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   879
                           end)) ths
38699
27378b4a776b compute names lazily;
blanchet
parents: 38698
diff changeset
   880
            #> snd
38627
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   881
          end)
38644
25bbbaf7ce65 don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents: 38629
diff changeset
   882
  in
43245
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   883
    (* The single-name theorems go after the multiple-name ones, so that single
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   884
       names are preferred when both are available. *)
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   885
    ([], []) |> add_facts false fold local_facts (unnamed_locals @ named_locals)
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   886
             |> add_facts true Facts.fold_static global_facts global_facts
cef69d31bfa4 optimized the relevance filter a little bit
blanchet
parents: 43085
diff changeset
   887
             |> op @
38644
25bbbaf7ce65 don't penalize abstractions in relevance filter + support nameless `foo`-style facts
blanchet
parents: 38629
diff changeset
   888
  end
38627
760a2d5cc671 make sure minimizer facts go through "transform_elim_theorems"
blanchet
parents: 38617
diff changeset
   889
41199
4698d12dd860 instantiate induction rules automatically
blanchet
parents: 41167
diff changeset
   890
fun external_frees t =
4698d12dd860 instantiate induction rules automatically
blanchet
parents: 41167
diff changeset
   891
  [] |> Term.add_frees t |> filter_out (can Name.dest_internal o fst)
4698d12dd860 instantiate induction rules automatically
blanchet
parents: 41167
diff changeset
   892
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   893
fun nearly_all_facts ctxt ho_atp ({add, only, ...} : relevance_override)
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   894
                     chained_ths hyp_ts concl_t =
43351
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   895
  let
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   896
    val thy = Proof_Context.theory_of ctxt
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   897
    val reserved = reserved_isar_keyword_table ()
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   898
    val add_ths = Attrib.eval_thms ctxt add
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   899
    val ind_stmt =
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   900
      Logic.list_implies (hyp_ts |> filter_out (null o external_frees), concl_t)
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   901
      |> Object_Logic.atomize_term thy
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   902
    val ind_stmt_xs = external_frees ind_stmt
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   903
  in
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   904
    (if only then
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   905
       maps (map (fn ((name, loc), th) => ((K name, loc), th))
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   906
             o fact_from_ref ctxt reserved chained_ths) add
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   907
     else
44585
cfe7f4a68e51 added generation of induction rules
nik
parents: 44462
diff changeset
   908
       all_facts ctxt ho_atp reserved false add_ths chained_ths)
43351
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   909
    |> Config.get ctxt instantiate_inducts
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   910
       ? maps (instantiate_if_induct_rule ctxt ind_stmt ind_stmt_xs)
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   911
    |> (not (Config.get ctxt ignore_no_atp) andalso not only)
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   912
       ? filter_out (No_ATPs.member ctxt o snd)
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   913
    |> uniquify
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   914
  end
b19d95b4d736 compute the set of base facts only once (instead of three times in parallel) -- this saves about .5 s of CPU time, albeit much less clock wall time
blanchet
parents: 43324
diff changeset
   915
44625
4a1132815a70 more tuning
blanchet
parents: 44586
diff changeset
   916
fun relevant_facts ctxt (threshold0, threshold1) max_relevant is_built_in_const
4a1132815a70 more tuning
blanchet
parents: 44586
diff changeset
   917
                   fudge (override as {only, ...}) chained_ths hyp_ts concl_t
4a1132815a70 more tuning
blanchet
parents: 44586
diff changeset
   918
                   facts =
37538
97ab019d5ac8 make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents: 37537
diff changeset
   919
  let
42361
23f352990944 modernized structure Proof_Context;
wenzelm
parents: 42358
diff changeset
   920
    val thy = Proof_Context.theory_of ctxt
38822
aa0101e618e2 fix threshold computation + remove "op =" from relevant constants
blanchet
parents: 38821
diff changeset
   921
    val decay = Math.pow ((1.0 - threshold1) / (1.0 - threshold0),
aa0101e618e2 fix threshold computation + remove "op =" from relevant constants
blanchet
parents: 38821
diff changeset
   922
                          1.0 / Real.fromInt (max_relevant + 1))
37538
97ab019d5ac8 make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents: 37537
diff changeset
   923
  in
42646
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   924
    trace_msg ctxt (fn () => "Considering " ^ string_of_int (length facts) ^
4781fcd53572 replaced some Unsynchronized.refs with Config.Ts
blanchet
parents: 42641
diff changeset
   925
                             " facts");
39366
f58fbb959826 handle relevance filter corner cases more gracefully;
blanchet
parents: 39265
diff changeset
   926
    (if only orelse threshold1 < 0.0 then
40204
da97d75e20e6 standardize on "fact" terminology (vs. "axiom" or "theorem") in Sledgehammer -- but keep "Axiom" in the lower-level "ATP_Problem" module
blanchet
parents: 40191
diff changeset
   927
       facts
39366
f58fbb959826 handle relevance filter corner cases more gracefully;
blanchet
parents: 39265
diff changeset
   928
     else if threshold0 > 1.0 orelse threshold0 > threshold1 orelse
f58fbb959826 handle relevance filter corner cases more gracefully;
blanchet
parents: 39265
diff changeset
   929
             max_relevant = 0 then
38739
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   930
       []
8b8ed80b5699 renamed "relevance_convergence" to "relevance_decay"
blanchet
parents: 38738
diff changeset
   931
     else
44625
4a1132815a70 more tuning
blanchet
parents: 44586
diff changeset
   932
       relevance_filter ctxt threshold0 decay max_relevant is_built_in_const
4a1132815a70 more tuning
blanchet
parents: 44586
diff changeset
   933
           fudge override facts (chained_ths |> map prop_of) hyp_ts
4a1132815a70 more tuning
blanchet
parents: 44586
diff changeset
   934
           (concl_t |> theory_constify fudge (Context.theory_name thy)))
38822
aa0101e618e2 fix threshold computation + remove "op =" from relevant constants
blanchet
parents: 38821
diff changeset
   935
    |> map (apfst (apfst (fn f => f ())))
37538
97ab019d5ac8 make sure that theorems passed using "add:" to Sledgehammer are not eliminated on heuristic grounds
blanchet
parents: 37537
diff changeset
   936
  end
30536
07b4f050e4df split relevance-filter and writing of problem-files;
immler@in.tum.de
parents: 30364
diff changeset
   937
15347
14585bc8fa09 resolution package tools by Jia Meng
paulson
parents:
diff changeset
   938
end;