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    ("relevance_thresholds", "0.45 0.85"),

    84    ("max_relevant", "smart"),

    85    ("monomorphize_limit", "4"),

    86    ("explicit_apply", "false"),

    87    ("isar_proof", "false"),

    88    ("isar_shrink_factor", "1"),

    89    ("slicing", "true")]

    91 val alias_params =

    92   [("prover", "provers"),

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

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

    95 val negated_alias_params =

    96   [("no_debug", "debug"),

    97    ("quiet", "verbose"),

    98    ("no_overlord", "overlord"),

    99    ("non_blocking", "blocking"),

   100    ("partial_types", "full_types"),

   101    ("implicit_apply", "explicit_apply"),

   102    ("no_isar_proof", "isar_proof"),

   103    ("no_slicing", "slicing")]

   105 val params_for_minimize =

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

   107    "isar_shrink_factor", "timeout"]

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

   111 fun is_known_raw_param s =

   112   AList.defined (op =) default_default_params s orelse

   113   AList.defined (op =) alias_params s orelse

   114   AList.defined (op =) negated_alias_params s orelse

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

   117 fun is_prover_list ctxt s =

   118   case space_explode " " s of

   119     ss as _ :: _ => forall (is_prover_supported ctxt) ss

   120   | _ => false

   122 fun check_and_repair_raw_param ctxt (name, value) =

   123   if is_known_raw_param name then (name, value)

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

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

   127 fun unalias_raw_param (name, value) =

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

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

   130   | NONE =>

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

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

   133                               ["false"] => ["true"]

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

   135                             | [] => ["false"]

   136                             | _ => value)

   137     | NONE => (name, value)

   139 structure Data = Theory_Data

   140 (

   141   type T = raw_param list

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

   143   val extend = I

   144   fun merge data : T = AList.merge (op =) (K true) data

   145 )

   147 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   148   if String.isPrefix remote_prefix name then

   149     SOME name

   150   else

   151     let val remote_name = remote_prefix ^ name in

   152       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   153     end

   155 fun remotify_prover_if_not_installed ctxt name =

   156   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   157     SOME name

   158   else

   159     remotify_prover_if_supported_and_not_already_remote ctxt name

   161 fun avoid_too_many_local_threads _ _ [] = []

   162   | avoid_too_many_local_threads ctxt 0 provers =

   163     map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   164                provers

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

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

   167       prover :: avoid_too_many_local_threads ctxt n provers

   168     end

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

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

   172 fun default_provers_param_value ctxt =

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

   174   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   176   |> space_implode " "

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

   179 fun default_raw_params ctxt =

   180   let val thy = Proof_Context.theory_of ctxt in

   181     Data.get thy

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

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

   184                             "" => default_provers_param_value ctxt

   185                           | s => s]),

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

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

   188                            [if timeout <= 0 then "none"

   189                             else string_of_int timeout]

   190                          end)]

   191   end

   193 val infinity_time_in_secs = 60 * 60 * 24 * 365

   194 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   196 fun extract_params auto default_params override_params =

   197   let

   198     val override_params = map unalias_raw_param override_params

   199     val raw_params = rev override_params @ rev default_params

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

   201     val lookup_string = the_default "" o lookup

   202     fun general_lookup_bool option default_value name =

   203       case lookup name of

   204         SOME s => parse_bool_option option name s

   205       | NONE => default_value

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

   207     fun lookup_time name =

   208       case lookup name of

   209         SOME s => parse_time_option name s

   210       | NONE => NONE

   211     fun lookup_int name =

   212       case lookup name of

   213         NONE => 0

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

   215                     SOME n => n

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

   217                                    " must be assigned an integer value.")

   218     fun lookup_real_pair name =

   219       case lookup name of

   220         NONE => (0.0, 0.0)

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

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

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

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

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

   226     fun lookup_int_option name =

   227       case lookup name of

   228         SOME "smart" => NONE

   229       | _ => SOME (lookup_int name)

   230     val debug = not auto andalso lookup_bool "debug"

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

   232     val overlord = lookup_bool "overlord"

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

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

   235                   |> auto ? single o hd

   236     val type_sys = lookup_string "type_sys"

   237     val type_sys =

   238       (case try (unprefix "mono_") type_sys of

   239          SOME s => (true, s)

   240        | NONE => (false, type_sys))

   241       ||> (fn s => case try (unsuffix " **") s of

   242                      SOME s => (Unsound, s)

   243                    | NONE => case try (unsuffix " *") s of

   244                                SOME s => (Half_Sound, s)

   245                              | NONE => (Sound, s))

   246       |> (fn (mono, (level, core)) =>

   247              case (core, (mono, level)) of

   248                ("many_typed", (false, Sound)) => Dumb_Type_Sys Many_Typed

   249              | ("mangled", (false, level)) => Dumb_Type_Sys (Mangled level)

   250              | ("args", extra) => Dumb_Type_Sys (Args extra)

   251              | ("tags", extra) => Dumb_Type_Sys (Tags extra)

   252              | ("none", (false, Sound)) => Dumb_Type_Sys No_Types

   253              | ("smart", (false, Sound)) =>

   254                Smart_Type_Sys (lookup_bool "full_types")

   255              | _ => error ("Unknown type system: " ^ quote type_sys ^ "."))

   256     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   257     val max_relevant = lookup_int_option "max_relevant"

   258     val monomorphize_limit = lookup_int "monomorphize_limit"

   259     val explicit_apply = lookup_bool "explicit_apply"

   260     val isar_proof = lookup_bool "isar_proof"

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

   262     val slicing = not auto andalso lookup_bool "slicing"

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

   264     val expect = lookup_string "expect"

   265   in

   266     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   267      provers = provers, relevance_thresholds = relevance_thresholds,

   268      max_relevant = max_relevant, monomorphize_limit = monomorphize_limit,

   269      type_sys = type_sys, explicit_apply = explicit_apply,

   270      isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,

   271      slicing = slicing, timeout = timeout, expect = expect}

   272   end

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

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

   277 (* Sledgehammer the given subgoal *)

   279 val sledgehammerN = "sledgehammer"

   280 val sledgehammer_paramsN = "sledgehammer_params"

   282 val runN = "run"

   283 val minimizeN = "minimize"

   284 val messagesN = "messages"

   285 val supported_proversN = "supported_provers"

   286 val running_proversN = "running_provers"

   287 val kill_proversN = "kill_provers"

   288 val refresh_tptpN = "refresh_tptp"

   290 val is_raw_param_relevant_for_minimize =

   291   member (op =) params_for_minimize o fst o unalias_raw_param

   292 fun string_for_raw_param (key, values) =

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

   295 fun minimize_command override_params i prover_name fact_names =

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

   297   (override_params |> filter is_raw_param_relevant_for_minimize

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

   299   "] (" ^ space_implode " " fact_names ^ ")" ^

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

   302 fun hammer_away override_params subcommand opt_i relevance_override state =

   303   let

   304     val ctxt = Proof.context_of state

   305     val override_params =

   306       override_params |> map (check_and_repair_raw_param ctxt)

   307   in

   308     if subcommand = runN then

   309       let val i = the_default 1 opt_i in

   310         run_sledgehammer (get_params false ctxt override_params) false i

   311                          relevance_override (minimize_command override_params i)

   312                          state

   313         |> K ()

   314       end

   315     else if subcommand = minimizeN then

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

   317                    (#add relevance_override) state

   318     else if subcommand = messagesN then

   319       messages opt_i

   320     else if subcommand = supported_proversN then

   321       supported_provers ctxt

   322     else if subcommand = running_proversN then

   323       running_provers ()

   324     else if subcommand = kill_proversN then

   325       kill_provers ()

   326     else if subcommand = refresh_tptpN then

   327       refresh_systems_on_tptp ()

   328     else

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

   330   end

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

   333   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   334                  o Toplevel.proof_of)

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

   338 fun sledgehammer_params_trans params =

   339   Toplevel.theory

   340       (fold set_default_raw_param params

   341        #> tap (fn thy =>

   342                   let val ctxt = Proof_Context.init_global thy in

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

   344                              (case default_raw_params ctxt |> rev of

   345                                 [] => "none"

   346                               | params =>

   347                                 params |> map (check_and_repair_raw_param ctxt)

   348                                        |> map string_for_raw_param

   349                                        |> sort_strings |> cat_lines))

   350                   end))

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

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

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

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

   356 val parse_fact_refs =

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

   358 val parse_relevance_chunk =

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

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

   361   || (parse_fact_refs >> only_relevance_override)

   362 val parse_relevance_override =

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

   364                               >> merge_relevance_overrides))

   365                 no_relevance_override

   366 val parse_sledgehammer_command =

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

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

   369 val parse_sledgehammer_params_command =

   370   parse_params #>> sledgehammer_params_trans

   372 val _ =

   373   Outer_Syntax.improper_command sledgehammerN

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

   375       parse_sledgehammer_command

   376 val _ =

   377   Outer_Syntax.command sledgehammer_paramsN

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

   379       parse_sledgehammer_params_command

   381 fun auto_sledgehammer state =

   382   let val ctxt = Proof.context_of state in

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

   384                      (minimize_command [] 1) state

   385   end

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

   389 end;

author	blanchet
	Sun, 01 May 2011 18:37:25 +0200
changeset 43450	2552c09b1a72
parent 43419	ea2a28b1938f
child 43452	398fff2c6b8f
permissions	-rw-r--r--