src/HOL/Tools/ATP_Manager/atp_systems.ML
author blanchet
Tue Jul 27 17:32:10 2010 +0200 (2010-07-27)
changeset 38017 3ad3e3ca2451
parent 38015 b30c3c2e1030
child 38019 e207a64e1e0b
permissions -rw-r--r--
move Sledgehammer-specific code out of "Sledgehammer_TPTP_Format"
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(*  Title:      HOL/Tools/ATP_Manager/atp_systems.ML
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    Author:     Fabian Immler, TU Muenchen
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    Author:     Jasmin Blanchette, TU Muenchen
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Setup for supported ATPs.
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*)
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signature ATP_SYSTEMS =
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sig
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  val trace : bool Unsynchronized.ref
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  val dest_dir : string Config.T
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  val problem_prefix : string Config.T
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  val measure_runtime : bool Config.T
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  val refresh_systems_on_tptp : unit -> unit
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  val default_atps_param_value : unit -> string
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  val setup : theory -> theory
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end;
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structure ATP_Systems : ATP_SYSTEMS =
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struct
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open Metis_Clauses
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open Sledgehammer_Util
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open Sledgehammer_Fact_Filter
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open Sledgehammer_TPTP_Format
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open Sledgehammer_Proof_Reconstruct
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open ATP_Manager
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val trace = Unsynchronized.ref false
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fun trace_msg msg = if !trace then tracing (msg ()) else ()
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(** generic ATP **)
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(* external problem files *)
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val (dest_dir, dest_dir_setup) = Attrib.config_string "atp_dest_dir" (K "");
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  (*Empty string means create files in Isabelle's temporary files directory.*)
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val (problem_prefix, problem_prefix_setup) =
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  Attrib.config_string "atp_problem_prefix" (K "prob");
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val (measure_runtime, measure_runtime_setup) =
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  Attrib.config_bool "atp_measure_runtime" (K false);
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(* prover configuration *)
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type prover_config =
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  {home_var: string,
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   executable: string,
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   arguments: bool -> Time.time -> string,
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   proof_delims: (string * string) list,
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   known_failures: (failure * string) list,
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   max_new_relevant_facts_per_iter: int,
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   prefers_theory_relevant: bool,
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   explicit_forall: bool}
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(* basic template *)
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val remotify = prefix "remote_"
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fun with_path cleanup after f path =
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  Exn.capture f path
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  |> tap (fn _ => cleanup path)
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  |> Exn.release
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  |> tap (after path)
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(* Splits by the first possible of a list of delimiters. *)
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fun extract_proof delims output =
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  case pairself (find_first (fn s => String.isSubstring s output))
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                (ListPair.unzip delims) of
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    (SOME begin_delim, SOME end_delim) =>
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    (output |> first_field begin_delim |> the |> snd
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            |> first_field end_delim |> the |> fst
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            |> first_field "\n" |> the |> snd
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     handle Option.Option => "")
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  | _ => ""
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fun extract_proof_and_outcome complete res_code proof_delims known_failures
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                              output =
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  case map_filter (fn (failure, pattern) =>
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                      if String.isSubstring pattern output then SOME failure
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                      else NONE) known_failures of
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    [] => (case extract_proof proof_delims output of
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             "" => ("", SOME UnknownError)
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           | proof => if res_code = 0 then (proof, NONE)
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                      else ("", SOME UnknownError))
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  | (failure :: _) =>
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    ("", SOME (if failure = IncompleteUnprovable andalso complete then
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                 Unprovable
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               else
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                 failure))
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fun string_for_failure Unprovable = "The ATP problem is unprovable."
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  | string_for_failure IncompleteUnprovable =
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    "The ATP cannot prove the problem."
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  | string_for_failure CantConnect = "Can't connect to remote ATP."
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  | string_for_failure TimedOut = "Timed out."
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  | string_for_failure OutOfResources = "The ATP ran out of resources."
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  | string_for_failure OldSpass =
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    (* FIXME: Change the error message below to point to the Isabelle download
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       page once the package is there. *)
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    "Warning: Sledgehammer requires a more recent version of SPASS with \
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    \support for the TPTP syntax. To install it, download and untar the \
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    \package \"http://isabelle.in.tum.de/~blanchet/spass-3.7.tgz\" and add the \
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    \\"spass-3.7\" directory's full path to \"" ^
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    Path.implode (Path.expand (Path.appends
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        (Path.variable "ISABELLE_HOME_USER" ::
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         map Path.basic ["etc", "components"]))) ^
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    "\" on a line of its own."
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  | string_for_failure MalformedInput =
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    "Internal Sledgehammer error: The ATP problem is malformed. Please report \
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    \this to the Isabelle developers."
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  | string_for_failure MalformedOutput = "Error: The ATP output is malformed."
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  | string_for_failure UnknownError = "Error: An unknown ATP error occurred."
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(* Clause preparation *)
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datatype fol_formula =
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  FOLFormula of {formula_name: string,
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                 kind: kind,
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                 combformula: (name, combterm) formula,
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                 ctypes_sorts: typ list}
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fun mk_anot phi = AConn (ANot, [phi])
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fun mk_aconn c phi1 phi2 = AConn (c, [phi1, phi2])
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fun mk_ahorn [] phi = phi
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  | mk_ahorn (phi :: phis) psi =
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    AConn (AImplies, [fold (mk_aconn AAnd) phis phi, psi])
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(* ### FIXME: reintroduce
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fun make_clause_table xs =
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  fold (Termtab.update o `(prop_of o snd)) xs Termtab.empty
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(* Remove existing axiom clauses from the conjecture clauses, as this can
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   dramatically boost an ATP's performance (for some reason). *)
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fun subtract_cls ax_clauses =
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  filter_out (Termtab.defined (make_clause_table ax_clauses) o prop_of)
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*)
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fun combformula_for_prop thy =
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  let
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    val do_term = combterm_from_term thy
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    fun do_quant bs q s T t' =
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      do_formula ((s, T) :: bs) t'
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      #>> (fn phi => AQuant (q, [`make_bound_var s], phi))
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    and do_conn bs c t1 t2 =
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      do_formula bs t1 ##>> do_formula bs t2
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      #>> (fn (phi1, phi2) => AConn (c, [phi1, phi2]))
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    and do_formula bs t =
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      case t of
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        @{const Not} $ t1 =>
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        do_formula bs t1 #>> (fn phi => AConn (ANot, [phi]))
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      | Const (@{const_name All}, _) $ Abs (s, T, t') =>
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        do_quant bs AForall s T t'
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      | Const (@{const_name Ex}, _) $ Abs (s, T, t') =>
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        do_quant bs AExists s T t'
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      | @{const "op &"} $ t1 $ t2 => do_conn bs AAnd t1 t2
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      | @{const "op |"} $ t1 $ t2 => do_conn bs AOr t1 t2
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      | @{const "op -->"} $ t1 $ t2 => do_conn bs AImplies t1 t2
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      | Const (@{const_name "op ="}, Type (_, [@{typ bool}, _])) $ t1 $ t2 =>
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        do_conn bs AIff t1 t2
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      | _ => (fn ts => do_term bs (Envir.eta_contract t)
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                       |>> APred ||> union (op =) ts)
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  in do_formula [] end
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(* Converts an elim-rule into an equivalent theorem that does not have the
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   predicate variable. Leaves other theorems unchanged. We simply instantiate
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   the conclusion variable to False. (Cf. "transform_elim_term" in
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   "ATP_Systems".) *)
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(* FIXME: test! *)
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fun transform_elim_term t =
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  case Logic.strip_imp_concl t of
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    @{const Trueprop} $ Var (z, @{typ bool}) =>
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    subst_Vars [(z, @{const True})] t
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  | Var (z, @{typ prop}) => subst_Vars [(z, @{prop True})] t
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  | _ => t
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(* Removes the lambdas from an equation of the form "t = (%x. u)".
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   (Cf. "extensionalize_theorem" in "Clausifier".) *)
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fun extensionalize_term t =
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  let
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    fun aux j (Const (@{const_name "op ="}, Type (_, [Type (_, [_, T']), _]))
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               $ t2 $ Abs (s, var_T, t')) =
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        let val var_t = Var (("x", j), var_T) in
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          Const (@{const_name "op ="}, T' --> T' --> HOLogic.boolT)
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            $ betapply (t2, var_t) $ subst_bound (var_t, t')
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          |> aux (j + 1)
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        end
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      | aux _ t = t
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  in aux (maxidx_of_term t + 1) t end
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(* FIXME: Guarantee freshness *)
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fun concealed_bound_name j = "Sledgehammer" ^ Int.toString j
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fun conceal_bounds Ts t =
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  subst_bounds (map (Free o apfst concealed_bound_name)
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                    (length Ts - 1 downto 0 ~~ rev Ts), t)
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fun reveal_bounds Ts =
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  subst_atomic (map (fn (j, T) => (Free (concealed_bound_name j, T), Bound j))
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                    (0 upto length Ts - 1 ~~ Ts))
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fun introduce_combinators_in_term ctxt kind t =
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  let
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    val thy = ProofContext.theory_of ctxt
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    fun aux Ts t =
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      case t of
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        @{const Not} $ t1 => @{const Not} $ aux Ts t1
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      | (t0 as Const (@{const_name All}, _)) $ Abs (s, T, t') =>
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        t0 $ Abs (s, T, aux (T :: Ts) t')
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      | (t0 as Const (@{const_name Ex}, _)) $ Abs (s, T, t') =>
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        t0 $ Abs (s, T, aux (T :: Ts) t')
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      | (t0 as @{const "op &"}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
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      | (t0 as @{const "op |"}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
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      | (t0 as @{const "op -->"}) $ t1 $ t2 => t0 $ aux Ts t1 $ aux Ts t2
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      | (t0 as Const (@{const_name "op ="}, Type (_, [@{typ bool}, _])))
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          $ t1 $ t2 =>
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        t0 $ aux Ts t1 $ aux Ts t2
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      | _ => if not (exists_subterm (fn Abs _ => true | _ => false) t) then
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               t
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             else
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               let
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                 val t = t |> conceal_bounds Ts
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                           |> Envir.eta_contract
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                 val ([t], ctxt') = Variable.import_terms true [t] ctxt
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               in
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                 t |> cterm_of thy
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                   |> Clausifier.introduce_combinators_in_cterm
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                   |> singleton (Variable.export ctxt' ctxt)
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                   |> prop_of |> Logic.dest_equals |> snd
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                   |> reveal_bounds Ts
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               end
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  in t |> not (Meson.is_fol_term thy t) ? aux [] end
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  handle THM _ =>
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         (* A type variable of sort "{}" will make abstraction fail. *)
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         case kind of
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           Axiom => HOLogic.true_const
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         | Conjecture => HOLogic.false_const
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(* making axiom and conjecture clauses *)
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fun make_clause ctxt (formula_name, kind, t) =
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  let
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    val thy = ProofContext.theory_of ctxt
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    (* ### FIXME: perform other transformations previously done by
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       "Clausifier.to_nnf", e.g. "HOL.If" *)
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    val t = t |> transform_elim_term
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              |> Object_Logic.atomize_term thy
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              |> extensionalize_term
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              |> introduce_combinators_in_term ctxt kind
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    val (combformula, ctypes_sorts) = combformula_for_prop thy t []
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  in
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    FOLFormula {formula_name = formula_name, combformula = combformula,
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                kind = kind, ctypes_sorts = ctypes_sorts}
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  end
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fun make_axiom_clause ctxt (name, th) =
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  (name, make_clause ctxt (name, Axiom, prop_of th))
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fun make_conjecture_clauses ctxt ts =
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  map2 (fn j => fn t => make_clause ctxt (Int.toString j, Conjecture, t))
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       (0 upto length ts - 1) ts
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(** Helper clauses **)
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fun count_combterm (CombConst ((s, _), _, _)) =
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    Symtab.map_entry s (Integer.add 1)
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  | count_combterm (CombVar _) = I
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  | count_combterm (CombApp (t1, t2)) = fold count_combterm [t1, t2]
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fun count_combformula (AQuant (_, _, phi)) = count_combformula phi
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  | count_combformula (AConn (_, phis)) = fold count_combformula phis
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  | count_combformula (APred tm) = count_combterm tm
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fun count_fol_formula (FOLFormula {combformula, ...}) =
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  count_combformula combformula
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val optional_helpers =
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  [(["c_COMBI", "c_COMBK"], @{thms COMBI_def COMBK_def}),
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   (["c_COMBB", "c_COMBC"], @{thms COMBB_def COMBC_def}),
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   (["c_COMBS"], @{thms COMBS_def})]
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val optional_typed_helpers =
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  [(["c_True", "c_False"], @{thms True_or_False}),
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   (["c_If"], @{thms if_True if_False True_or_False})]
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val mandatory_helpers = @{thms fequal_imp_equal equal_imp_fequal}
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val init_counters =
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  Symtab.make (maps (maps (map (rpair 0) o fst))
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                    [optional_helpers, optional_typed_helpers])
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fun get_helper_clauses ctxt is_FO full_types conjectures axclauses =
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  let
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    val ct = fold (fold count_fol_formula) [conjectures, axclauses]
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                  init_counters
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    fun is_needed c = the (Symtab.lookup ct c) > 0
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    val cnfs =
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      (optional_helpers
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       |> full_types ? append optional_typed_helpers
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       |> maps (fn (ss, ths) =>
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                   if exists is_needed ss then map (`Thm.get_name_hint) ths
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                   else [])) @
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      (if is_FO then [] else map (`Thm.get_name_hint) mandatory_helpers)
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  in map (snd o make_axiom_clause ctxt) cnfs end
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fun s_not (@{const Not} $ t) = t
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  | s_not t = @{const Not} $ t
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(* prepare for passing to writer,
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   create additional clauses based on the information from extra_cls *)
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fun prepare_clauses ctxt full_types hyp_ts concl_t axcls extra_cls =
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  let
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    val thy = ProofContext.theory_of ctxt
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    val goal_t = Logic.list_implies (hyp_ts, concl_t)
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    val is_FO = Meson.is_fol_term thy goal_t
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    val _ = trace_msg (fn _ => Syntax.string_of_term ctxt goal_t)
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    val axtms = map (prop_of o snd) extra_cls
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    val subs = tfree_classes_of_terms [goal_t]
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    val supers = tvar_classes_of_terms axtms
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   315
    val tycons = type_consts_of_terms thy (goal_t :: axtms)
blanchet@38002
   316
    (* TFrees in conjecture clauses; TVars in axiom clauses *)
blanchet@38005
   317
    val conjectures =
blanchet@38005
   318
      map (s_not o HOLogic.dest_Trueprop) hyp_ts @
blanchet@38005
   319
        [HOLogic.dest_Trueprop concl_t]
blanchet@38005
   320
      |> make_conjecture_clauses ctxt
blanchet@38005
   321
    val extra_clauses = map (snd o make_axiom_clause ctxt) extra_cls
blanchet@38003
   322
    val (clnames, axiom_clauses) =
blanchet@38005
   323
      ListPair.unzip (map (make_axiom_clause ctxt) axcls)
blanchet@38003
   324
    (* FIXME: Should it read "extra_clauses" or "axiom_clauses" in the
blanchet@38003
   325
       "get_helper_clauses" call? *)
blanchet@37623
   326
    val helper_clauses =
blanchet@38005
   327
      get_helper_clauses ctxt is_FO full_types conjectures extra_clauses
blanchet@37623
   328
    val (supers', arity_clauses) = make_arity_clauses thy tycons supers
blanchet@37925
   329
    val class_rel_clauses = make_class_rel_clauses thy subs supers'
blanchet@37623
   330
  in
blanchet@37623
   331
    (Vector.fromList clnames,
blanchet@37925
   332
      (conjectures, axiom_clauses, extra_clauses, helper_clauses,
blanchet@37925
   333
       class_rel_clauses, arity_clauses))
blanchet@37623
   334
  end
blanchet@37623
   335
blanchet@38017
   336
val axiom_prefix = "ax_"
blanchet@38017
   337
val conjecture_prefix = "conj_"
blanchet@38017
   338
val arity_clause_prefix = "clsarity_"
blanchet@38017
   339
val tfrees_name = "tfrees"
blanchet@38017
   340
blanchet@38017
   341
fun wrap_type ty t = ATerm ((type_wrapper_name, type_wrapper_name), [ty, t])
blanchet@38017
   342
blanchet@38017
   343
fun fo_term_for_combtyp (CombTVar name) = ATerm (name, [])
blanchet@38017
   344
  | fo_term_for_combtyp (CombTFree name) = ATerm (name, [])
blanchet@38017
   345
  | fo_term_for_combtyp (CombType (name, tys)) =
blanchet@38017
   346
    ATerm (name, map fo_term_for_combtyp tys)
blanchet@38017
   347
blanchet@38017
   348
fun fo_literal_for_type_literal (TyLitVar (class, name)) =
blanchet@38017
   349
    (true, ATerm (class, [ATerm (name, [])]))
blanchet@38017
   350
  | fo_literal_for_type_literal (TyLitFree (class, name)) =
blanchet@38017
   351
    (true, ATerm (class, [ATerm (name, [])]))
blanchet@38017
   352
blanchet@38017
   353
fun formula_for_fo_literal (pos, t) = APred t |> not pos ? mk_anot
blanchet@38017
   354
blanchet@38017
   355
fun fo_term_for_combterm full_types =
blanchet@38017
   356
  let
blanchet@38017
   357
    fun aux top_level u =
blanchet@38017
   358
      let
blanchet@38017
   359
        val (head, args) = strip_combterm_comb u
blanchet@38017
   360
        val (x, ty_args) =
blanchet@38017
   361
          case head of
blanchet@38017
   362
            CombConst (name, _, ty_args) =>
blanchet@38017
   363
            if fst name = "equal" then
blanchet@38017
   364
              (if top_level andalso length args = 2 then name
blanchet@38017
   365
               else ("c_fequal", @{const_name fequal}), [])
blanchet@38017
   366
            else
blanchet@38017
   367
              (name, if full_types then [] else ty_args)
blanchet@38017
   368
          | CombVar (name, _) => (name, [])
blanchet@38017
   369
          | CombApp _ => raise Fail "impossible \"CombApp\""
blanchet@38017
   370
        val t = ATerm (x, map fo_term_for_combtyp ty_args @
blanchet@38017
   371
                          map (aux false) args)
blanchet@38017
   372
    in
blanchet@38017
   373
      if full_types then wrap_type (fo_term_for_combtyp (combtyp_of u)) t else t
blanchet@38017
   374
    end
blanchet@38017
   375
  in aux true end
blanchet@38017
   376
blanchet@38017
   377
fun formula_for_combformula full_types =
blanchet@38017
   378
  let
blanchet@38017
   379
    fun aux (AQuant (q, xs, phi)) = AQuant (q, xs, aux phi)
blanchet@38017
   380
      | aux (AConn (c, phis)) = AConn (c, map aux phis)
blanchet@38017
   381
      | aux (APred tm) = APred (fo_term_for_combterm full_types tm)
blanchet@38017
   382
  in aux end
blanchet@38017
   383
blanchet@38017
   384
fun formula_for_axiom full_types (FOLFormula {combformula, ctypes_sorts, ...}) =
blanchet@38017
   385
  mk_ahorn (map (formula_for_fo_literal o fo_literal_for_type_literal)
blanchet@38017
   386
                (type_literals_for_types ctypes_sorts))
blanchet@38017
   387
           (formula_for_combformula full_types combformula)
blanchet@38017
   388
blanchet@38017
   389
fun problem_line_for_axiom full_types
blanchet@38017
   390
        (formula as FOLFormula {formula_name, kind, ...}) =
blanchet@38017
   391
  Fof (axiom_prefix ^ ascii_of formula_name, kind,
blanchet@38017
   392
       formula_for_axiom full_types formula)
blanchet@38017
   393
blanchet@38017
   394
fun problem_line_for_class_rel_clause
blanchet@38017
   395
        (ClassRelClause {axiom_name, subclass, superclass, ...}) =
blanchet@38017
   396
  let val ty_arg = ATerm (("T", "T"), []) in
blanchet@38017
   397
    Fof (ascii_of axiom_name, Axiom,
blanchet@38017
   398
         AConn (AImplies, [APred (ATerm (subclass, [ty_arg])),
blanchet@38017
   399
                           APred (ATerm (superclass, [ty_arg]))]))
blanchet@38017
   400
  end
blanchet@38017
   401
blanchet@38017
   402
fun fo_literal_for_arity_literal (TConsLit (c, t, args)) =
blanchet@38017
   403
    (true, ATerm (c, [ATerm (t, map (fn arg => ATerm (arg, [])) args)]))
blanchet@38017
   404
  | fo_literal_for_arity_literal (TVarLit (c, sort)) =
blanchet@38017
   405
    (false, ATerm (c, [ATerm (sort, [])]))
blanchet@38017
   406
blanchet@38017
   407
fun problem_line_for_arity_clause
blanchet@38017
   408
        (ArityClause {axiom_name, conclLit, premLits, ...}) =
blanchet@38017
   409
  Fof (arity_clause_prefix ^ ascii_of axiom_name, Axiom,
blanchet@38017
   410
       mk_ahorn (map (formula_for_fo_literal o apfst not
blanchet@38017
   411
                      o fo_literal_for_arity_literal) premLits)
blanchet@38017
   412
                (formula_for_fo_literal
blanchet@38017
   413
                     (fo_literal_for_arity_literal conclLit)))
blanchet@38017
   414
blanchet@38017
   415
fun problem_line_for_conjecture full_types
blanchet@38017
   416
        (FOLFormula {formula_name, kind, combformula, ...}) =
blanchet@38017
   417
  Fof (conjecture_prefix ^ formula_name, kind,
blanchet@38017
   418
       formula_for_combformula full_types combformula)
blanchet@38017
   419
blanchet@38017
   420
fun free_type_literals_for_conjecture (FOLFormula {ctypes_sorts, ...}) =
blanchet@38017
   421
  map fo_literal_for_type_literal (type_literals_for_types ctypes_sorts)
blanchet@38017
   422
blanchet@38017
   423
fun problem_line_for_free_type lit =
blanchet@38017
   424
  Fof (tfrees_name, Conjecture, mk_anot (formula_for_fo_literal lit))
blanchet@38017
   425
fun problem_lines_for_free_types conjectures =
blanchet@38017
   426
  let
blanchet@38017
   427
    val litss = map free_type_literals_for_conjecture conjectures
blanchet@38017
   428
    val lits = fold (union (op =)) litss []
blanchet@38017
   429
  in map problem_line_for_free_type lits end
blanchet@38017
   430
blanchet@38017
   431
(** "hBOOL" and "hAPP" **)
blanchet@38017
   432
blanchet@38017
   433
type const_info = {min_arity: int, max_arity: int, sub_level: bool}
blanchet@38017
   434
blanchet@38017
   435
fun consider_term top_level (ATerm ((s, _), ts)) =
blanchet@38017
   436
  (if is_tptp_variable s then
blanchet@38017
   437
     I
blanchet@38017
   438
   else
blanchet@38017
   439
     let val n = length ts in
blanchet@38017
   440
       Symtab.map_default
blanchet@38017
   441
           (s, {min_arity = n, max_arity = 0, sub_level = false})
blanchet@38017
   442
           (fn {min_arity, max_arity, sub_level} =>
blanchet@38017
   443
               {min_arity = Int.min (n, min_arity),
blanchet@38017
   444
                max_arity = Int.max (n, max_arity),
blanchet@38017
   445
                sub_level = sub_level orelse not top_level})
blanchet@38017
   446
     end)
blanchet@38017
   447
  #> fold (consider_term (top_level andalso s = type_wrapper_name)) ts
blanchet@38017
   448
fun consider_formula (AQuant (_, _, phi)) = consider_formula phi
blanchet@38017
   449
  | consider_formula (AConn (_, phis)) = fold consider_formula phis
blanchet@38017
   450
  | consider_formula (APred tm) = consider_term true tm
blanchet@38017
   451
blanchet@38017
   452
fun consider_problem_line (Fof (_, _, phi)) = consider_formula phi
blanchet@38017
   453
fun consider_problem problem = fold (fold consider_problem_line o snd) problem
blanchet@38017
   454
blanchet@38017
   455
fun const_table_for_problem explicit_apply problem =
blanchet@38017
   456
  if explicit_apply then NONE
blanchet@38017
   457
  else SOME (Symtab.empty |> consider_problem problem)
blanchet@38017
   458
blanchet@38017
   459
val tc_fun = make_fixed_type_const @{type_name fun}
blanchet@38017
   460
blanchet@38017
   461
fun min_arity_of thy full_types NONE s =
blanchet@38017
   462
    (if s = "equal" orelse s = type_wrapper_name orelse
blanchet@38017
   463
        String.isPrefix type_const_prefix s orelse
blanchet@38017
   464
        String.isPrefix class_prefix s then
blanchet@38017
   465
       16383 (* large number *)
blanchet@38017
   466
     else if full_types then
blanchet@38017
   467
       0
blanchet@38017
   468
     else case strip_prefix_and_undo_ascii const_prefix s of
blanchet@38017
   469
       SOME s' => num_type_args thy (invert_const s')
blanchet@38017
   470
     | NONE => 0)
blanchet@38017
   471
  | min_arity_of _ _ (SOME the_const_tab) s =
blanchet@38017
   472
    case Symtab.lookup the_const_tab s of
blanchet@38017
   473
      SOME ({min_arity, ...} : const_info) => min_arity
blanchet@38017
   474
    | NONE => 0
blanchet@38017
   475
blanchet@38017
   476
fun full_type_of (ATerm ((s, _), [ty, _])) =
blanchet@38017
   477
    if s = type_wrapper_name then ty else raise Fail "expected type wrapper"
blanchet@38017
   478
  | full_type_of _ = raise Fail "expected type wrapper"
blanchet@38017
   479
blanchet@38017
   480
fun list_hAPP_rev _ t1 [] = t1
blanchet@38017
   481
  | list_hAPP_rev NONE t1 (t2 :: ts2) =
blanchet@38017
   482
    ATerm (`I "hAPP", [list_hAPP_rev NONE t1 ts2, t2])
blanchet@38017
   483
  | list_hAPP_rev (SOME ty) t1 (t2 :: ts2) =
blanchet@38017
   484
    let val ty' = ATerm (`make_fixed_type_const @{type_name fun},
blanchet@38017
   485
                         [full_type_of t2, ty]) in
blanchet@38017
   486
      ATerm (`I "hAPP", [wrap_type ty' (list_hAPP_rev (SOME ty') t1 ts2), t2])
blanchet@38017
   487
    end
blanchet@38017
   488
blanchet@38017
   489
fun repair_applications_in_term thy full_types const_tab =
blanchet@38017
   490
  let
blanchet@38017
   491
    fun aux opt_ty (ATerm (name as (s, _), ts)) =
blanchet@38017
   492
      if s = type_wrapper_name then
blanchet@38017
   493
        case ts of
blanchet@38017
   494
          [t1, t2] => ATerm (name, [aux NONE t1, aux (SOME t1) t2])
blanchet@38017
   495
        | _ => raise Fail "malformed type wrapper"
blanchet@38017
   496
      else
blanchet@38017
   497
        let
blanchet@38017
   498
          val ts = map (aux NONE) ts
blanchet@38017
   499
          val (ts1, ts2) = chop (min_arity_of thy full_types const_tab s) ts
blanchet@38017
   500
        in list_hAPP_rev opt_ty (ATerm (name, ts1)) (rev ts2) end
blanchet@38017
   501
  in aux NONE end
blanchet@38017
   502
blanchet@38017
   503
fun boolify t = ATerm (`I "hBOOL", [t])
blanchet@38017
   504
blanchet@38017
   505
(* True if the constant ever appears outside of the top-level position in
blanchet@38017
   506
   literals, or if it appears with different arities (e.g., because of different
blanchet@38017
   507
   type instantiations). If false, the constant always receives all of its
blanchet@38017
   508
   arguments and is used as a predicate. *)
blanchet@38017
   509
fun is_predicate NONE s =
blanchet@38017
   510
    s = "equal" orelse String.isPrefix type_const_prefix s orelse
blanchet@38017
   511
    String.isPrefix class_prefix s
blanchet@38017
   512
  | is_predicate (SOME the_const_tab) s =
blanchet@38017
   513
    case Symtab.lookup the_const_tab s of
blanchet@38017
   514
      SOME {min_arity, max_arity, sub_level} =>
blanchet@38017
   515
      not sub_level andalso min_arity = max_arity
blanchet@38017
   516
    | NONE => false
blanchet@38017
   517
blanchet@38017
   518
fun repair_predicates_in_term const_tab (t as ATerm ((s, _), ts)) =
blanchet@38017
   519
  if s = type_wrapper_name then
blanchet@38017
   520
    case ts of
blanchet@38017
   521
      [_, t' as ATerm ((s', _), _)] =>
blanchet@38017
   522
      if is_predicate const_tab s' then t' else boolify t
blanchet@38017
   523
    | _ => raise Fail "malformed type wrapper"
blanchet@38017
   524
  else
blanchet@38017
   525
    t |> not (is_predicate const_tab s) ? boolify
blanchet@38017
   526
blanchet@38017
   527
fun close_universally phi =
blanchet@38017
   528
  let
blanchet@38017
   529
    fun term_vars bounds (ATerm (name as (s, _), tms)) =
blanchet@38017
   530
        (is_tptp_variable s andalso not (member (op =) bounds name))
blanchet@38017
   531
          ? insert (op =) name
blanchet@38017
   532
        #> fold (term_vars bounds) tms
blanchet@38017
   533
    fun formula_vars bounds (AQuant (q, xs, phi)) =
blanchet@38017
   534
        formula_vars (xs @ bounds) phi
blanchet@38017
   535
      | formula_vars bounds (AConn (_, phis)) = fold (formula_vars bounds) phis
blanchet@38017
   536
      | formula_vars bounds (APred tm) = term_vars bounds tm
blanchet@38017
   537
  in
blanchet@38017
   538
    case formula_vars [] phi [] of [] => phi | xs => AQuant (AForall, xs, phi)
blanchet@38017
   539
  end
blanchet@38017
   540
blanchet@38017
   541
fun repair_formula thy explicit_forall full_types const_tab =
blanchet@38017
   542
  let
blanchet@38017
   543
    fun aux (AQuant (q, xs, phi)) = AQuant (q, xs, aux phi)
blanchet@38017
   544
      | aux (AConn (c, phis)) = AConn (c, map aux phis)
blanchet@38017
   545
      | aux (APred tm) =
blanchet@38017
   546
        APred (tm |> repair_applications_in_term thy full_types const_tab
blanchet@38017
   547
                  |> repair_predicates_in_term const_tab)
blanchet@38017
   548
  in aux #> explicit_forall ? close_universally end
blanchet@38017
   549
blanchet@38017
   550
fun repair_problem_line thy explicit_forall full_types const_tab
blanchet@38017
   551
                        (Fof (ident, kind, phi)) =
blanchet@38017
   552
  Fof (ident, kind, repair_formula thy explicit_forall full_types const_tab phi)
blanchet@38017
   553
fun repair_problem_with_const_table thy =
blanchet@38017
   554
  map o apsnd o map ooo repair_problem_line thy
blanchet@38017
   555
blanchet@38017
   556
fun repair_problem thy explicit_forall full_types explicit_apply problem =
blanchet@38017
   557
  repair_problem_with_const_table thy explicit_forall full_types
blanchet@38017
   558
      (const_table_for_problem explicit_apply problem) problem
blanchet@38017
   559
blanchet@38017
   560
fun write_tptp_file thy readable_names explicit_forall full_types explicit_apply
blanchet@38017
   561
                    file (conjectures, axiom_clauses, extra_clauses,
blanchet@38017
   562
                          helper_clauses, class_rel_clauses, arity_clauses) =
blanchet@38017
   563
  let
blanchet@38017
   564
    val axiom_lines = map (problem_line_for_axiom full_types) axiom_clauses
blanchet@38017
   565
    val class_rel_lines =
blanchet@38017
   566
      map problem_line_for_class_rel_clause class_rel_clauses
blanchet@38017
   567
    val arity_lines = map problem_line_for_arity_clause arity_clauses
blanchet@38017
   568
    val helper_lines = map (problem_line_for_axiom full_types) helper_clauses
blanchet@38017
   569
    val conjecture_lines =
blanchet@38017
   570
      map (problem_line_for_conjecture full_types) conjectures
blanchet@38017
   571
    val tfree_lines = problem_lines_for_free_types conjectures
blanchet@38017
   572
    (* Reordering these might or might not confuse the proof reconstruction
blanchet@38017
   573
       code or the SPASS Flotter hack. *)
blanchet@38017
   574
    val problem =
blanchet@38017
   575
      [("Relevant facts", axiom_lines),
blanchet@38017
   576
       ("Class relationships", class_rel_lines),
blanchet@38017
   577
       ("Arity declarations", arity_lines),
blanchet@38017
   578
       ("Helper facts", helper_lines),
blanchet@38017
   579
       ("Conjectures", conjecture_lines),
blanchet@38017
   580
       ("Type variables", tfree_lines)]
blanchet@38017
   581
      |> repair_problem thy explicit_forall full_types explicit_apply
blanchet@38017
   582
    val (problem, pool) = nice_tptp_problem readable_names problem
blanchet@38017
   583
    val conjecture_offset =
blanchet@38017
   584
      length axiom_lines + length class_rel_lines + length arity_lines
blanchet@38017
   585
      + length helper_lines
blanchet@38017
   586
    val _ = File.write_list file (strings_for_tptp_problem problem)
blanchet@38017
   587
  in
blanchet@38017
   588
    (case pool of SOME the_pool => snd the_pool | NONE => Symtab.empty,
blanchet@38017
   589
     conjecture_offset)
blanchet@38017
   590
  end
blanchet@38017
   591
blanchet@37962
   592
fun extract_clause_sequence output =
blanchet@37962
   593
  let
blanchet@37962
   594
    val tokens_of = String.tokens (not o Char.isAlphaNum)
blanchet@37962
   595
    fun extract_num ("clause" :: (ss as _ :: _)) =
blanchet@37962
   596
    Int.fromString (List.last ss)
blanchet@37962
   597
      | extract_num _ = NONE
blanchet@37962
   598
  in output |> split_lines |> map_filter (extract_num o tokens_of) end
blanchet@37962
   599
blanchet@37962
   600
val set_ClauseFormulaRelationN = "set_ClauseFormulaRelation"
blanchet@37962
   601
blanchet@37962
   602
val parse_clause_formula_pair =
blanchet@37962
   603
  $$ "(" |-- scan_integer --| $$ "," -- Symbol.scan_id --| $$ ")"
blanchet@37962
   604
  --| Scan.option ($$ ",")
blanchet@37962
   605
val parse_clause_formula_relation =
blanchet@37962
   606
  Scan.this_string set_ClauseFormulaRelationN |-- $$ "("
blanchet@37962
   607
  |-- Scan.repeat parse_clause_formula_pair
blanchet@37962
   608
val extract_clause_formula_relation =
blanchet@37962
   609
  Substring.full
blanchet@37962
   610
  #> Substring.position set_ClauseFormulaRelationN
blanchet@37962
   611
  #> snd #> Substring.string #> strip_spaces #> explode
blanchet@37962
   612
  #> parse_clause_formula_relation #> fst
blanchet@37962
   613
blanchet@37989
   614
fun repair_conjecture_shape_and_theorem_names output conjecture_shape
blanchet@37989
   615
                                              thm_names =
blanchet@37962
   616
  if String.isSubstring set_ClauseFormulaRelationN output then
blanchet@38009
   617
    (* This is a hack required for keeping track of axioms after they have been
blanchet@38009
   618
       clausified by SPASS's Flotter tool. The "SPASS_TPTP" script is also part
blanchet@38009
   619
       of this hack. *)
blanchet@37962
   620
    let
blanchet@37996
   621
      val j0 = hd conjecture_shape
blanchet@37962
   622
      val seq = extract_clause_sequence output
blanchet@37962
   623
      val name_map = extract_clause_formula_relation output
blanchet@37989
   624
      fun renumber_conjecture j =
blanchet@37989
   625
        AList.find (op =) name_map (conjecture_prefix ^ Int.toString (j - j0))
blanchet@37989
   626
        |> the_single
blanchet@37989
   627
        |> (fn s => find_index (curry (op =) s) seq + 1)
blanchet@37962
   628
    in
blanchet@37996
   629
      (conjecture_shape |> map renumber_conjecture,
blanchet@37989
   630
       seq |> map (the o AList.lookup (op =) name_map)
blanchet@37989
   631
           |> map (fn s => case try (unprefix axiom_prefix) s of
blanchet@37989
   632
                             SOME s' => undo_ascii_of s'
blanchet@37989
   633
                           | NONE => "")
blanchet@37989
   634
           |> Vector.fromList)
blanchet@37962
   635
    end
blanchet@37962
   636
  else
blanchet@37989
   637
    (conjecture_shape, thm_names)
blanchet@37962
   638
blanchet@37623
   639
blanchet@37499
   640
(* generic TPTP-based provers *)
blanchet@37499
   641
blanchet@37499
   642
fun generic_tptp_prover
blanchet@37499
   643
        (name, {home_var, executable, arguments, proof_delims, known_failures,
blanchet@38009
   644
                max_new_relevant_facts_per_iter, prefers_theory_relevant,
blanchet@38009
   645
                explicit_forall})
blanchet@37580
   646
        ({debug, overlord, full_types, explicit_apply, relevance_threshold,
blanchet@37580
   647
          relevance_convergence, theory_relevant, defs_relevant, isar_proof,
blanchet@37580
   648
          isar_shrink_factor, ...} : params)
blanchet@37499
   649
        minimize_command timeout
blanchet@35969
   650
        ({subgoal, goal, relevance_override, axiom_clauses, filtered_clauses}
blanchet@35969
   651
         : problem) =
wenzelm@28596
   652
  let
immler@31750
   653
    (* get clauses and prepare them for writing *)
blanchet@37498
   654
    val (ctxt, (_, th)) = goal;
blanchet@38005
   655
    val thy = ProofContext.theory_of ctxt
blanchet@37995
   656
    (* ### FIXME: (1) preprocessing for "if" etc. *)
blanchet@37995
   657
    val (params, hyp_ts, concl_t) = strip_subgoal th subgoal
immler@31752
   658
    val the_filtered_clauses =
blanchet@37621
   659
      case filtered_clauses of
blanchet@37621
   660
        SOME fcls => fcls
blanchet@37621
   661
      | NONE => relevant_facts full_types relevance_threshold
blanchet@38009
   662
                    relevance_convergence defs_relevant
blanchet@38009
   663
                    max_new_relevant_facts_per_iter
blanchet@37499
   664
                    (the_default prefers_theory_relevant theory_relevant)
blanchet@37995
   665
                    relevance_override goal hyp_ts concl_t
blanchet@37506
   666
    val the_axiom_clauses = axiom_clauses |> the_default the_filtered_clauses
blanchet@35969
   667
    val (internal_thm_names, clauses) =
blanchet@38005
   668
      prepare_clauses ctxt full_types hyp_ts concl_t the_axiom_clauses
blanchet@38005
   669
                      the_filtered_clauses
immler@31750
   670
boehmes@32864
   671
    (* path to unique problem file *)
blanchet@36376
   672
    val the_dest_dir = if overlord then getenv "ISABELLE_HOME_USER"
blanchet@36376
   673
                       else Config.get ctxt dest_dir;
blanchet@36376
   674
    val the_problem_prefix = Config.get ctxt problem_prefix;
boehmes@32864
   675
    fun prob_pathname nr =
blanchet@36143
   676
      let
blanchet@36143
   677
        val probfile =
blanchet@36568
   678
          Path.basic ((if overlord then "prob_" ^ name
blanchet@36568
   679
                       else the_problem_prefix ^ serial_string ())
blanchet@36143
   680
                      ^ "_" ^ string_of_int nr)
wenzelm@32942
   681
      in
blanchet@36376
   682
        if the_dest_dir = "" then File.tmp_path probfile
blanchet@36376
   683
        else if File.exists (Path.explode the_dest_dir)
blanchet@36376
   684
        then Path.append (Path.explode the_dest_dir) probfile
blanchet@36376
   685
        else error ("No such directory: " ^ the_dest_dir ^ ".")
wenzelm@32942
   686
      end;
boehmes@32864
   687
blanchet@36917
   688
    val home = getenv home_var
blanchet@36289
   689
    val command = Path.explode (home ^ "/" ^ executable)
immler@31750
   690
    (* write out problem file and call prover *)
blanchet@37514
   691
    fun command_line complete probfile =
blanchet@37514
   692
      let
blanchet@37514
   693
        val core = File.shell_path command ^ " " ^ arguments complete timeout ^
blanchet@37514
   694
                   " " ^ File.shell_path probfile
blanchet@37514
   695
      in
blanchet@37514
   696
        (if Config.get ctxt measure_runtime then
blanchet@37514
   697
           "TIMEFORMAT='%3U'; { time " ^ core ^ " ; }"
blanchet@37514
   698
         else
blanchet@37962
   699
           "exec " ^ core) ^ " 2>&1"
blanchet@37514
   700
      end
boehmes@32510
   701
    fun split_time s =
boehmes@32510
   702
      let
wenzelm@32942
   703
        val split = String.tokens (fn c => str c = "\n");
blanchet@36369
   704
        val (output, t) = s |> split |> split_last |> apfst cat_lines;
wenzelm@32942
   705
        fun as_num f = f >> (fst o read_int);
wenzelm@32942
   706
        val num = as_num (Scan.many1 Symbol.is_ascii_digit);
wenzelm@32942
   707
        val digit = Scan.one Symbol.is_ascii_digit;
wenzelm@32942
   708
        val num3 = as_num (digit ::: digit ::: (digit >> single));
wenzelm@32942
   709
        val time = num --| Scan.$$ "." -- num3 >> (fn (a, b) => a * 1000 + b);
wenzelm@32942
   710
        val as_time = the_default 0 o Scan.read Symbol.stopper time o explode;
blanchet@36369
   711
      in (output, as_time t) end;
boehmes@32458
   712
    fun run_on probfile =
blanchet@37962
   713
      if home = "" then
blanchet@37962
   714
        error ("The environment variable " ^ quote home_var ^ " is not set.")
blanchet@37962
   715
      else if File.exists command then
blanchet@37514
   716
        let
blanchet@37514
   717
          fun do_run complete =
blanchet@37514
   718
            let
blanchet@37514
   719
              val command = command_line complete probfile
blanchet@37514
   720
              val ((output, msecs), res_code) =
blanchet@37514
   721
                bash_output command
blanchet@37514
   722
                |>> (if overlord then
blanchet@37514
   723
                       prefix ("% " ^ command ^ "\n% " ^ timestamp () ^ "\n")
blanchet@37514
   724
                     else
blanchet@37514
   725
                       I)
blanchet@37514
   726
                |>> (if Config.get ctxt measure_runtime then split_time
blanchet@37514
   727
                     else rpair 0)
blanchet@37514
   728
              val (proof, outcome) =
blanchet@37514
   729
                extract_proof_and_outcome complete res_code proof_delims
blanchet@37514
   730
                                          known_failures output
blanchet@37514
   731
            in (output, msecs, proof, outcome) end
blanchet@37643
   732
          val readable_names = debug andalso overlord
blanchet@37514
   733
          val (pool, conjecture_offset) =
blanchet@37994
   734
            write_tptp_file thy readable_names explicit_forall full_types
blanchet@37994
   735
                            explicit_apply probfile clauses
blanchet@37995
   736
          val conjecture_shape =
blanchet@37995
   737
            conjecture_offset + 1 upto conjecture_offset + length hyp_ts + 1
blanchet@37514
   738
          val result =
blanchet@37514
   739
            do_run false
blanchet@37550
   740
            |> (fn (_, msecs0, _, SOME _) =>
blanchet@37514
   741
                   do_run true
blanchet@37514
   742
                   |> (fn (output, msecs, proof, outcome) =>
blanchet@37514
   743
                          (output, msecs0 + msecs, proof, outcome))
blanchet@37514
   744
                 | result => result)
blanchet@37514
   745
        in ((pool, conjecture_shape), result) end
blanchet@36382
   746
      else
blanchet@36382
   747
        error ("Bad executable: " ^ Path.implode command ^ ".");
wenzelm@28592
   748
blanchet@36167
   749
    (* If the problem file has not been exported, remove it; otherwise, export
blanchet@36167
   750
       the proof file too. *)
blanchet@36376
   751
    fun cleanup probfile =
blanchet@36376
   752
      if the_dest_dir = "" then try File.rm probfile else NONE
blanchet@37514
   753
    fun export probfile (_, (output, _, _, _)) =
blanchet@36376
   754
      if the_dest_dir = "" then
blanchet@36187
   755
        ()
blanchet@36187
   756
      else
blanchet@37514
   757
        File.write (Path.explode (Path.implode probfile ^ "_proof")) output
wenzelm@32257
   758
blanchet@37514
   759
    val ((pool, conjecture_shape), (output, msecs, proof, outcome)) =
blanchet@37514
   760
      with_path cleanup export run_on (prob_pathname subgoal)
blanchet@37989
   761
    val (conjecture_shape, internal_thm_names) =
blanchet@37989
   762
      repair_conjecture_shape_and_theorem_names output conjecture_shape
blanchet@37989
   763
                                                internal_thm_names
blanchet@37514
   764
blanchet@38015
   765
    val (message, used_thm_names) =
blanchet@36370
   766
      case outcome of
blanchet@36400
   767
        NONE =>
blanchet@36400
   768
        proof_text isar_proof
blanchet@37480
   769
            (pool, debug, isar_shrink_factor, ctxt, conjecture_shape)
blanchet@37480
   770
            (full_types, minimize_command, proof, internal_thm_names, th,
blanchet@37480
   771
             subgoal)
blanchet@36370
   772
      | SOME failure => (string_for_failure failure ^ "\n", [])
boehmes@32864
   773
  in
blanchet@36393
   774
    {outcome = outcome, message = message, pool = pool,
blanchet@38015
   775
     used_thm_names = used_thm_names, atp_run_time_in_msecs = msecs,
blanchet@37514
   776
     output = output, proof = proof, internal_thm_names = internal_thm_names,
blanchet@36400
   777
     conjecture_shape = conjecture_shape,
blanchet@35969
   778
     filtered_clauses = the_filtered_clauses}
blanchet@37499
   779
  end
wenzelm@28596
   780
blanchet@35969
   781
fun tptp_prover name p = (name, generic_tptp_prover (name, p));
wenzelm@28596
   782
blanchet@36382
   783
fun to_generous_secs time = (Time.toMilliseconds time + 999) div 1000
blanchet@36142
   784
wenzelm@28596
   785
(* E prover *)
wenzelm@28596
   786
blanchet@36369
   787
val tstp_proof_delims =
blanchet@36369
   788
  ("# SZS output start CNFRefutation.", "# SZS output end CNFRefutation")
blanchet@36369
   789
blanchet@35969
   790
val e_config : prover_config =
blanchet@36917
   791
  {home_var = "E_HOME",
blanchet@36289
   792
   executable = "eproof",
blanchet@37514
   793
   arguments = fn _ => fn timeout =>
blanchet@36382
   794
     "--tstp-in --tstp-out -l5 -xAutoDev -tAutoDev --silent --cpu-limit=" ^
blanchet@36382
   795
     string_of_int (to_generous_secs timeout),
blanchet@36369
   796
   proof_delims = [tstp_proof_delims],
blanchet@36265
   797
   known_failures =
blanchet@37995
   798
     [(Unprovable, "SZS status: CounterSatisfiable"),
blanchet@37995
   799
      (Unprovable, "SZS status CounterSatisfiable"),
blanchet@36370
   800
      (TimedOut, "Failure: Resource limit exceeded (time)"),
blanchet@36370
   801
      (TimedOut, "time limit exceeded"),
blanchet@36370
   802
      (OutOfResources,
blanchet@36370
   803
       "# Cannot determine problem status within resource limit"),
blanchet@36370
   804
      (OutOfResources, "SZS status: ResourceOut"),
blanchet@36370
   805
      (OutOfResources, "SZS status ResourceOut")],
blanchet@38009
   806
   max_new_relevant_facts_per_iter = 80 (* FIXME *),
blanchet@37994
   807
   prefers_theory_relevant = false,
blanchet@37994
   808
   explicit_forall = false}
blanchet@35969
   809
val e = tptp_prover "e" e_config
wenzelm@28596
   810
wenzelm@28596
   811
blanchet@36219
   812
(* The "-VarWeight=3" option helps the higher-order problems, probably by
blanchet@36219
   813
   counteracting the presence of "hAPP". *)
blanchet@37498
   814
val spass_config : prover_config =
blanchet@37962
   815
  {home_var = "ISABELLE_ATP_MANAGER",
blanchet@37962
   816
   executable = "SPASS_TPTP",
blanchet@37550
   817
   (* "div 2" accounts for the fact that SPASS is often run twice. *)
blanchet@37514
   818
   arguments = fn complete => fn timeout =>
blanchet@37962
   819
     ("-Auto -PGiven=0 -PProblem=0 -Splits=0 -FullRed=0 -DocProof \
blanchet@37550
   820
      \-VarWeight=3 -TimeLimit=" ^
blanchet@37550
   821
      string_of_int (to_generous_secs timeout div 2))
blanchet@37514
   822
     |> not complete ? prefix "-SOS=1 ",
blanchet@36369
   823
   proof_delims = [("Here is a proof", "Formulae used in the proof")],
blanchet@36289
   824
   known_failures =
blanchet@37413
   825
     [(IncompleteUnprovable, "SPASS beiseite: Completion found"),
blanchet@36370
   826
      (TimedOut, "SPASS beiseite: Ran out of time"),
blanchet@36965
   827
      (OutOfResources, "SPASS beiseite: Maximal number of loops exceeded"),
blanchet@37413
   828
      (MalformedInput, "Undefined symbol"),
blanchet@37414
   829
      (MalformedInput, "Free Variable"),
blanchet@37962
   830
      (OldSpass, "tptp2dfg")],
blanchet@38009
   831
   max_new_relevant_facts_per_iter = 26 (* FIXME *),
blanchet@37994
   832
   prefers_theory_relevant = true,
blanchet@37994
   833
   explicit_forall = true}
blanchet@37414
   834
val spass = tptp_prover "spass" spass_config
wenzelm@28596
   835
blanchet@37509
   836
(* Vampire *)
blanchet@37509
   837
blanchet@37509
   838
val vampire_config : prover_config =
blanchet@37509
   839
  {home_var = "VAMPIRE_HOME",
blanchet@37509
   840
   executable = "vampire",
blanchet@37514
   841
   arguments = fn _ => fn timeout =>
blanchet@37509
   842
     "--output_syntax tptp --mode casc -t " ^
blanchet@37509
   843
     string_of_int (to_generous_secs timeout),
blanchet@37509
   844
   proof_delims =
blanchet@37509
   845
     [("=========== Refutation ==========",
blanchet@37509
   846
       "======= End of refutation ======="),
blanchet@37509
   847
      ("% SZS output start Refutation", "% SZS output end Refutation")],
blanchet@37509
   848
   known_failures =
blanchet@37509
   849
     [(Unprovable, "UNPROVABLE"),
blanchet@37509
   850
      (IncompleteUnprovable, "CANNOT PROVE"),
blanchet@37509
   851
      (Unprovable, "Satisfiability detected"),
blanchet@37509
   852
      (OutOfResources, "Refutation not found")],
blanchet@38009
   853
   max_new_relevant_facts_per_iter = 40 (* FIXME *),
blanchet@37994
   854
   prefers_theory_relevant = false,
blanchet@37994
   855
   explicit_forall = false}
blanchet@37509
   856
val vampire = tptp_prover "vampire" vampire_config
blanchet@37509
   857
blanchet@37509
   858
(* Remote prover invocation via SystemOnTPTP *)
wenzelm@28596
   859
blanchet@36376
   860
val systems = Synchronized.var "atp_systems" ([]: string list);
immler@31835
   861
immler@31835
   862
fun get_systems () =
blanchet@36370
   863
  case bash_output "\"$ISABELLE_ATP_MANAGER/SystemOnTPTP\" -w" of
blanchet@36370
   864
    (answer, 0) => split_lines answer
blanchet@36370
   865
  | (answer, _) =>
blanchet@37627
   866
    error ("Failed to get available systems at SystemOnTPTP:\n" ^
blanchet@37627
   867
           perhaps (try (unsuffix "\n")) answer)
immler@31835
   868
blanchet@35867
   869
fun refresh_systems_on_tptp () =
blanchet@37509
   870
  Synchronized.change systems (fn _ => get_systems ())
immler@31835
   871
immler@31835
   872
fun get_system prefix = Synchronized.change_result systems (fn systems =>
boehmes@32864
   873
  (if null systems then get_systems () else systems)
wenzelm@32942
   874
  |> `(find_first (String.isPrefix prefix)));
boehmes@32864
   875
wenzelm@32948
   876
fun the_system prefix =
boehmes@32864
   877
  (case get_system prefix of
blanchet@37509
   878
    NONE => error ("System " ^ quote prefix ^ " not available at SystemOnTPTP.")
wenzelm@32942
   879
  | SOME sys => sys);
immler@31835
   880
blanchet@36265
   881
val remote_known_failures =
blanchet@37627
   882
  [(CantConnect, "HTTP-Error"),
blanchet@37627
   883
   (TimedOut, "says Timeout"),
blanchet@36377
   884
   (MalformedOutput, "Remote script could not extract proof")]
blanchet@35865
   885
blanchet@37509
   886
fun remote_config atp_prefix args
blanchet@38009
   887
        ({proof_delims, known_failures, max_new_relevant_facts_per_iter,
blanchet@37994
   888
          prefers_theory_relevant, explicit_forall, ...} : prover_config)
blanchet@37994
   889
        : prover_config =
blanchet@36917
   890
  {home_var = "ISABELLE_ATP_MANAGER",
blanchet@36289
   891
   executable = "SystemOnTPTP",
blanchet@37514
   892
   arguments = fn _ => fn timeout =>
blanchet@36382
   893
     args ^ " -t " ^ string_of_int (to_generous_secs timeout) ^ " -s " ^
blanchet@36382
   894
     the_system atp_prefix,
blanchet@36369
   895
   proof_delims = insert (op =) tstp_proof_delims proof_delims,
blanchet@36265
   896
   known_failures = remote_known_failures @ known_failures,
blanchet@38009
   897
   max_new_relevant_facts_per_iter = max_new_relevant_facts_per_iter,
blanchet@37994
   898
   prefers_theory_relevant = prefers_theory_relevant,
blanchet@37994
   899
   explicit_forall = explicit_forall}
wenzelm@28596
   900
blanchet@37509
   901
fun remote_tptp_prover prover atp_prefix args config =
blanchet@37509
   902
  tptp_prover (remotify (fst prover)) (remote_config atp_prefix args config)
boehmes@32864
   903
blanchet@37509
   904
val remote_e = remote_tptp_prover e "EP---" "" e_config
blanchet@37509
   905
val remote_spass = remote_tptp_prover spass "SPASS---" "-x" spass_config
blanchet@37509
   906
val remote_vampire = remote_tptp_prover vampire "Vampire---9" "" vampire_config
wenzelm@28592
   907
blanchet@36917
   908
fun maybe_remote (name, _) ({home_var, ...} : prover_config) =
blanchet@36917
   909
  name |> getenv home_var = "" ? remotify
blanchet@36371
   910
blanchet@36371
   911
fun default_atps_param_value () =
blanchet@36371
   912
  space_implode " " [maybe_remote e e_config, maybe_remote spass spass_config,
blanchet@36371
   913
                     remotify (fst vampire)]
blanchet@36371
   914
blanchet@37509
   915
val provers = [e, spass, vampire, remote_e, remote_spass, remote_vampire]
blanchet@35867
   916
val prover_setup = fold add_prover provers
blanchet@35867
   917
blanchet@35867
   918
val setup =
blanchet@36376
   919
  dest_dir_setup
blanchet@35867
   920
  #> problem_prefix_setup
blanchet@35867
   921
  #> measure_runtime_setup
blanchet@36371
   922
  #> prover_setup
blanchet@35867
   923
wenzelm@28592
   924
end;