wneuper/isa: src/HOL/Tools/Sledgehammer/sledgehammer

     1 (*  Title:      HOL/Tools/Sledgehammer/sledgehammer_isar.ML

     2     Author:     Jasmin Blanchette, TU Muenchen

     4 Adds "sledgehammer" and related commands to Isabelle/Isar's outer syntax.

     5 *)

     7 signature SLEDGEHAMMER_ISAR =

     8 sig

     9   type params = Sledgehammer_Provers.params

    11   val auto : bool Unsynchronized.ref

    12   val provers : string Unsynchronized.ref

    13   val timeout : int Unsynchronized.ref

    14   val full_types : bool Unsynchronized.ref

    15   val default_params : Proof.context -> (string * string) list -> params

    16   val setup : theory -> theory

    17 end;

    19 structure Sledgehammer_Isar : SLEDGEHAMMER_ISAR =

    20 struct

    22 open ATP_Systems

    23 open Sledgehammer_Util

    24 open Sledgehammer_ATP_Translate

    25 open Sledgehammer_Provers

    26 open Sledgehammer_Minimize

    27 open Sledgehammer_Run

    29 val auto = Unsynchronized.ref false

    31 val _ =

    32   ProofGeneralPgip.add_preference Preferences.category_tracing

    33       (Preferences.bool_pref auto "auto-sledgehammer"

    34            "Run Sledgehammer automatically.")

    36 (** Sledgehammer commands **)

    38 val no_relevance_override = {add = [], del = [], only = false}

    39 fun add_relevance_override ns : relevance_override =

    40   {add = ns, del = [], only = false}

    41 fun del_relevance_override ns : relevance_override =

    42   {add = [], del = ns, only = false}

    43 fun only_relevance_override ns : relevance_override =

    44   {add = ns, del = [], only = true}

    45 fun merge_relevance_override_pairwise (r1 : relevance_override)

    46                                       (r2 : relevance_override) =

    47   {add = #add r1 @ #add r2, del = #del r1 @ #del r2,

    48    only = #only r1 andalso #only r2}

    49 fun merge_relevance_overrides rs =

    50   fold merge_relevance_override_pairwise rs (only_relevance_override [])

    52 (*** parameters ***)

    54 val provers = Unsynchronized.ref ""

    55 val timeout = Unsynchronized.ref 30

    56 val full_types = Unsynchronized.ref false

    58 val _ =

    59   ProofGeneralPgip.add_preference Preferences.category_proof

    60       (Preferences.string_pref provers

    61           "Sledgehammer: Provers"

    62           "Default automatic provers (separated by whitespace)")

    64 val _ =

    65   ProofGeneralPgip.add_preference Preferences.category_proof

    66       (Preferences.int_pref timeout

    67           "Sledgehammer: Time Limit"

    68           "ATPs will be interrupted after this time (in seconds)")

    70 val _ =

    71   ProofGeneralPgip.add_preference Preferences.category_proof

    72       (Preferences.bool_pref full_types

    73           "Sledgehammer: Full Types" "ATPs will use full type information")

    75 type raw_param = string * string list

    77 val default_default_params =

    78   [("debug", "false"),

    79    ("verbose", "false"),

    80    ("overlord", "false"),

    81    ("blocking", "false"),

    82    ("type_sys", "smart"),

    83    ("explicit_apply", "false"),

    84    ("relevance_thresholds", "0.45 0.85"),

    85    ("max_relevant", "smart"),

    86    ("isar_proof", "false"),

    87    ("isar_shrink_factor", "1")]

    89 val alias_params =

    90   [("prover", "provers"),

    91    ("atps", "provers"), (* FIXME: legacy *)

    92    ("atp", "provers")]  (* FIXME: legacy *)

    93 val negated_alias_params =

    94   [("no_debug", "debug"),

    95    ("quiet", "verbose"),

    96    ("no_overlord", "overlord"),

    97    ("non_blocking", "blocking"),

    98    ("partial_types", "full_types"),

    99    ("implicit_apply", "explicit_apply"),

   100    ("no_isar_proof", "isar_proof")]

   102 val params_for_minimize =

   103   ["debug", "verbose", "overlord", "type_sys", "full_types", "isar_proof",

   104    "isar_shrink_factor", "timeout"]

   106 val property_dependent_params = ["provers", "full_types", "timeout"]

   108 fun is_known_raw_param s =

   109   AList.defined (op =) default_default_params s orelse

   110   AList.defined (op =) alias_params s orelse

   111   AList.defined (op =) negated_alias_params s orelse

   112   member (op =) property_dependent_params s orelse s = "expect"

   114 fun is_prover_list ctxt s =

   115   case space_explode " " s of

   116     ss as _ :: _ => forall (is_prover_available ctxt) ss

   117   | _ => false

   119 fun check_and_repair_raw_param ctxt (name, value) =

   120   if is_known_raw_param name then (name, value)

   121   else if is_prover_list ctxt name andalso null value then ("provers", [name])

   122   else error ("Unknown parameter: " ^ quote name ^ ".")

   124 fun unalias_raw_param (name, value) =

   125   case AList.lookup (op =) alias_params name of

   126     SOME name' => (name', value)

   127   | NONE =>

   128     case AList.lookup (op =) negated_alias_params name of

   129       SOME name' => (name', case value of

   130                               ["false"] => ["true"]

   131                             | ["true"] => ["false"]

   132                             | [] => ["false"]

   133                             | _ => value)

   134     | NONE => (name, value)

   136 structure Data = Theory_Data(

   137   type T = raw_param list

   138   val empty = default_default_params |> map (apsnd single)

   139   val extend = I

   140   fun merge p : T = AList.merge (op =) (K true) p)

   142 fun remotify_prover_if_available_and_not_already_remote ctxt name =

   143   if String.isPrefix remote_prefix name then

   144     SOME name

   145   else

   146     let val remote_name = remote_prefix ^ name in

   147       if is_prover_available ctxt remote_name then SOME remote_name else NONE

   148     end

   150 fun remotify_prover_if_not_installed ctxt name =

   151   if is_prover_available ctxt name andalso is_prover_installed ctxt name then

   152     SOME name

   153   else

   154     remotify_prover_if_available_and_not_already_remote ctxt name

   156 fun avoid_too_many_local_threads _ _ [] = []

   157   | avoid_too_many_local_threads ctxt 0 provers =

   158     map_filter (remotify_prover_if_available_and_not_already_remote ctxt)

   159                provers

   160   | avoid_too_many_local_threads ctxt n (prover :: provers) =

   161     let val n = if String.isPrefix remote_prefix prover then n else n - 1 in

   162       prover :: avoid_too_many_local_threads ctxt n provers

   163     end

   165 (* The first ATP of the list is used by Auto Sledgehammer. Because of the low

   166    timeout, it makes sense to put SPASS first. *)

   167 fun default_provers_param_value ctxt =

   168   [spassN, eN, vampireN, sine_eN, SMT_Solver.solver_name_of ctxt]

   169   |> map_filter (remotify_prover_if_not_installed ctxt)

   170   |> avoid_too_many_local_threads ctxt (Multithreading.max_threads_value ())

   171   |> space_implode " "

   173 val set_default_raw_param = Data.map o AList.update (op =) o unalias_raw_param

   174 fun default_raw_params ctxt =

   175   let val thy = ProofContext.theory_of ctxt in

   176     Data.get thy

   177     |> fold (AList.default (op =))

   178             [("provers", [case !provers of

   179                             "" => default_provers_param_value ctxt

   180                           | s => s]),

   181              ("full_types", [if !full_types then "true" else "false"]),

   182              ("timeout", let val timeout = !timeout in

   183                            [if timeout <= 0 then "none"

   184                             else string_of_int timeout]

   185                          end)]

   186   end

   188 val smart_full_type_sys = Tags true

   189 val smart_partial_type_sys = Const_Args

   191 val infinity_time_in_secs = 60 * 60 * 24 * 365

   192 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   194 fun extract_params auto default_params override_params =

   195   let

   196     val override_params = map unalias_raw_param override_params

   197     val raw_params = rev override_params @ rev default_params

   198     val lookup = Option.map (space_implode " ") o AList.lookup (op =) raw_params

   199     val lookup_string = the_default "" o lookup

   200     fun general_lookup_bool option default_value name =

   201       case lookup name of

   202         SOME s => parse_bool_option option name s

   203       | NONE => default_value

   204     val lookup_bool = the o general_lookup_bool false (SOME false)

   205     fun lookup_time name =

   206       case lookup name of

   207         SOME s => parse_time_option name s

   208       | NONE => NONE

   209     fun lookup_int name =

   210       case lookup name of

   211         NONE => 0

   212       | SOME s => case Int.fromString s of

   213                     SOME n => n

   214                   | NONE => error ("Parameter " ^ quote name ^

   215                                    " must be assigned an integer value.")

   216     fun lookup_real_pair name =

   217       case lookup name of

   218         NONE => (0.0, 0.0)

   219       | SOME s => case s |> space_explode " " |> map Real.fromString of

   220                     [SOME r1, SOME r2] => (r1, r2)

   221                   | _ => error ("Parameter " ^ quote name ^

   222                                 "must be assigned a pair of floating-point \

   223                                 \values (e.g., \"0.6 0.95\")")

   224     fun lookup_int_option name =

   225       case lookup name of

   226         SOME "smart" => NONE

   227       | _ => SOME (lookup_int name)

   228     val debug = not auto andalso lookup_bool "debug"

   229     val verbose = debug orelse (not auto andalso lookup_bool "verbose")

   230     val overlord = lookup_bool "overlord"

   231     val blocking = auto orelse debug orelse lookup_bool "blocking"

   232     val provers = lookup_string "provers" |> space_explode " "

   233                   |> auto ? single o hd

   234     val type_sys =

   235       case (lookup_string "type_sys", lookup_bool "full_types") of

   236         ("tags", full_types) => Tags full_types

   237       | ("preds", full_types) => Preds full_types

   238       | ("const_args", false) => Const_Args

   239       | ("none", false) => No_Types

   240       | (type_sys, full_types) =>

   241         if member (op =) ["const_args", "none", "smart"] type_sys then

   242           if full_types then smart_full_type_sys else smart_partial_type_sys

   243         else

   244           error ("Unknown type system: " ^ quote type_sys ^ ".")

   245     val explicit_apply = lookup_bool "explicit_apply"

   246     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   247     val max_relevant = lookup_int_option "max_relevant"

   248     val isar_proof = lookup_bool "isar_proof"

   249     val isar_shrink_factor = Int.max (1, lookup_int "isar_shrink_factor")

   250     val timeout = (if auto then NONE else lookup_time "timeout") |> the_timeout

   251     val expect = lookup_string "expect"

   252   in

   253     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   254      provers = provers, type_sys = type_sys, explicit_apply = explicit_apply,

   255      relevance_thresholds = relevance_thresholds, max_relevant = max_relevant,

   256      isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,

   257      timeout = timeout, expect = expect}

   258   end

   260 fun get_params auto ctxt = extract_params auto (default_raw_params ctxt)

   261 fun default_params thy = get_params false thy o map (apsnd single)

   263 (* Sledgehammer the given subgoal *)

   265 val sledgehammerN = "sledgehammer"

   266 val sledgehammer_paramsN = "sledgehammer_params"

   268 val runN = "run"

   269 val minimizeN = "minimize"

   270 val messagesN = "messages"

   271 val available_proversN = "available_provers"

   272 val running_proversN = "running_provers"

   273 val kill_proversN = "kill_provers"

   274 val refresh_tptpN = "refresh_tptp"

   276 val is_raw_param_relevant_for_minimize =

   277   member (op =) params_for_minimize o fst o unalias_raw_param

   278 fun string_for_raw_param (key, values) =

   279   key ^ (case space_implode " " values of "" => "" | value => " = " ^ value)

   281 fun minimize_command override_params i prover_name fact_names =

   282   sledgehammerN ^ " " ^ minimizeN ^ " [prover = " ^ prover_name ^

   283   (override_params |> filter is_raw_param_relevant_for_minimize

   284                    |> implode o map (prefix ", " o string_for_raw_param)) ^

   285   "] (" ^ space_implode " " fact_names ^ ")" ^

   286   (if i = 1 then "" else " " ^ string_of_int i)

   288 fun hammer_away override_params subcommand opt_i relevance_override state =

   289   let

   290     val ctxt = Proof.context_of state

   291     val override_params =

   292       override_params |> map (check_and_repair_raw_param ctxt)

   293   in

   294     if subcommand = runN then

   295       let val i = the_default 1 opt_i in

   296         run_sledgehammer (get_params false ctxt override_params) false i

   297                          relevance_override (minimize_command override_params i)

   298                          state

   299         |> K ()

   300       end

   301     else if subcommand = minimizeN then

   302       run_minimize (get_params false ctxt override_params) (the_default 1 opt_i)

   303                    (#add relevance_override) state

   304     else if subcommand = messagesN then

   305       messages opt_i

   306     else if subcommand = available_proversN then

   307       available_provers ctxt

   308     else if subcommand = running_proversN then

   309       running_provers ()

   310     else if subcommand = kill_proversN then

   311       kill_provers ()

   312     else if subcommand = refresh_tptpN then

   313       refresh_systems_on_tptp ()

   314     else

   315       error ("Unknown subcommand: " ^ quote subcommand ^ ".")

   316   end

   318 fun sledgehammer_trans (((subcommand, params), relevance_override), opt_i) =

   319   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   320                  o Toplevel.proof_of)

   322 fun string_for_raw_param (name, value) = name ^ " = " ^ space_implode " " value

   324 fun sledgehammer_params_trans params =

   325   Toplevel.theory

   326       (fold set_default_raw_param params

   327        #> tap (fn thy =>

   328                   let val ctxt = ProofContext.init_global thy in

   329                     writeln ("Default parameters for Sledgehammer:\n" ^

   330                              (case default_raw_params ctxt |> rev of

   331                                 [] => "none"

   332                               | params =>

   333                                 params |> map (check_and_repair_raw_param ctxt)

   334                                        |> map string_for_raw_param

   335                                        |> sort_strings |> cat_lines))

   336                   end))

   338 val parse_key = Scan.repeat1 Parse.typ_group >> space_implode " "

   339 val parse_value = Scan.repeat1 (Parse.xname || Parse.float_number)

   340 val parse_param = parse_key -- Scan.optional (Parse.$$$ "=" |-- parse_value) []

   341 val parse_params = Scan.optional (Args.bracks (Parse.list parse_param)) []

   342 val parse_fact_refs =

   343   Scan.repeat1 (Scan.unless (Parse.name -- Args.colon) Parse_Spec.xthm)

   344 val parse_relevance_chunk =

   345   (Args.add |-- Args.colon |-- parse_fact_refs >> add_relevance_override)

   346   || (Args.del |-- Args.colon |-- parse_fact_refs >> del_relevance_override)

   347   || (parse_fact_refs >> only_relevance_override)

   348 val parse_relevance_override =

   349   Scan.optional (Args.parens (Scan.repeat parse_relevance_chunk

   350                               >> merge_relevance_overrides))

   351                 no_relevance_override

   352 val parse_sledgehammer_command =

   353   (Scan.optional Parse.short_ident runN -- parse_params

   354    -- parse_relevance_override -- Scan.option Parse.nat) #>> sledgehammer_trans

   355 val parse_sledgehammer_params_command =

   356   parse_params #>> sledgehammer_params_trans

   358 val _ =

   359   Outer_Syntax.improper_command sledgehammerN

   360       "search for first-order proof using automatic theorem provers" Keyword.diag

   361       parse_sledgehammer_command

   362 val _ =

   363   Outer_Syntax.command sledgehammer_paramsN

   364       "set and display the default parameters for Sledgehammer" Keyword.thy_decl

   365       parse_sledgehammer_params_command

   367 fun auto_sledgehammer state =

   368   let val ctxt = Proof.context_of state in

   369     run_sledgehammer (get_params true ctxt []) true 1 no_relevance_override

   370                      (minimize_command [] 1) state

   371   end

   373 val setup = Auto_Tools.register_tool (auto, auto_sledgehammer)

   375 end;

author	blanchet
	Fri, 17 Dec 2010 21:47:13 +0100
changeset 41504	73401632a80c
parent 41456	1b28c43a7074
child 41720	f6ab14e61604
permissions	-rw-r--r--