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 sledgehammerN : string

    12   val auto : bool Unsynchronized.ref

    13   val provers : string Unsynchronized.ref

    14   val timeout : int 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_Util

    23 open ATP_Systems

    24 open ATP_Translate

    25 open Sledgehammer_Util

    26 open Sledgehammer_Filter

    27 open Sledgehammer_Provers

    28 open Sledgehammer_Minimize

    29 open Sledgehammer_Run

    31 val sledgehammerN = "sledgehammer"

    32 val sledgehammer_paramsN = "sledgehammer_params"

    34 val runN = "run"

    35 val minN = "min"

    36 val messagesN = "messages"

    37 val supported_proversN = "supported_provers"

    38 val running_proversN = "running_provers"

    39 val kill_proversN = "kill_provers"

    40 val refresh_tptpN = "refresh_tptp"

    42 val auto = Unsynchronized.ref false

    44 val _ =

    45   ProofGeneralPgip.add_preference Preferences.category_tracing

    46       (Preferences.bool_pref auto "auto-sledgehammer"

    47            "Run Sledgehammer automatically.")

    49 (** Sledgehammer commands **)

    51 fun add_relevance_override ns : relevance_override =

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

    53 fun del_relevance_override ns : relevance_override =

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

    55 fun only_relevance_override ns : relevance_override =

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

    57 fun merge_relevance_override_pairwise (r1 : relevance_override)

    58                                       (r2 : relevance_override) =

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

    60    only = #only r1 andalso #only r2}

    61 fun merge_relevance_overrides rs =

    62   fold merge_relevance_override_pairwise rs (only_relevance_override [])

    64 (*** parameters ***)

    66 val provers = Unsynchronized.ref ""

    67 val timeout = Unsynchronized.ref 30

    69 val _ =

    70   ProofGeneralPgip.add_preference Preferences.category_proof

    71       (Preferences.string_pref provers

    72           "Sledgehammer: Provers"

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

    75 val _ =

    76   ProofGeneralPgip.add_preference Preferences.category_proof

    77       (Preferences.int_pref timeout

    78           "Sledgehammer: Time Limit"

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

    81 type raw_param = string * string list

    83 val default_default_params =

    84   [("debug", "false"),

    85    ("verbose", "false"),

    86    ("overlord", "false"),

    87    ("blocking", "false"),

    88    ("type_enc", "smart"),

    89    ("sound", "false"),

    90    ("relevance_thresholds", "0.45 0.85"),

    91    ("max_relevant", "smart"),

    92    ("max_mono_iters", "3"),

    93    ("max_new_mono_instances", "200"),

    94    ("isar_proof", "false"),

    95    ("isar_shrink_factor", "1"),

    96    ("slicing", "true"),

    97    ("preplay_timeout", "4")]

    99 val alias_params =

   100   [("prover", "provers")]

   101 val negated_alias_params =

   102   [("no_debug", "debug"),

   103    ("quiet", "verbose"),

   104    ("no_overlord", "overlord"),

   105    ("non_blocking", "blocking"),

   106    ("unsound", "sound"),

   107    ("no_isar_proof", "isar_proof"),

   108    ("no_slicing", "slicing")]

   110 val params_for_minimize =

   111   ["debug", "verbose", "overlord", "type_enc", "sound", "max_mono_iters",

   112    "max_new_mono_instances", "isar_proof", "isar_shrink_factor", "timeout",

   113    "preplay_timeout"]

   115 val property_dependent_params = ["provers", "timeout"]

   117 fun is_known_raw_param s =

   118   AList.defined (op =) default_default_params s orelse

   119   AList.defined (op =) alias_params s orelse

   120   AList.defined (op =) negated_alias_params s orelse

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

   123 fun is_prover_list ctxt s =

   124   case space_explode " " s of

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

   126   | _ => false

   128 fun unalias_raw_param (name, value) =

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

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

   131   | NONE =>

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

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

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

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

   136                             | [] => ["false"]

   137                             | _ => value)

   138     | NONE => (name, value)

   140 (* "provers =" and "type_enc =" can be left out. The latter is a secret

   141    feature. *)

   142 fun normalize_raw_param ctxt =

   143   unalias_raw_param

   144   #> (fn (name, value) =>

   145          if is_known_raw_param name then

   146            (name, value)

   147          else if is_prover_list ctxt name andalso null value then

   148            ("provers", [name])

   149          else if can (type_enc_from_string Sound) name andalso null value then

   150            ("type_enc", [name])

   151          else

   152            error ("Unknown parameter: " ^ quote name ^ "."))

   155 (* Ensures that type encodings such as "mono_simple?" and "poly_guards!!" are

   156    read correctly. *)

   157 val implode_param = strip_spaces_except_between_idents o space_implode " "

   159 structure Data = Theory_Data

   160 (

   161   type T = raw_param list

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

   163   val extend = I

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

   165 )

   167 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   168   if String.isPrefix remote_prefix name then

   169     SOME name

   170   else

   171     let val remote_name = remote_prefix ^ name in

   172       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   173     end

   175 fun remotify_prover_if_not_installed ctxt name =

   176   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   177     SOME name

   178   else

   179     remotify_prover_if_supported_and_not_already_remote ctxt name

   181 fun avoid_too_many_threads _ _ [] = []

   182   | avoid_too_many_threads _ (0, 0) _ = []

   183   | avoid_too_many_threads ctxt (0, max_remote) provers =

   184     provers

   185     |> map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   186     |> take max_remote

   187   | avoid_too_many_threads _ (max_local, 0) provers =

   188     provers

   189     |> filter_out (String.isPrefix remote_prefix)

   190     |> take max_local

   191   | avoid_too_many_threads ctxt max_local_and_remote (prover :: provers) =

   192     let

   193       val max_local_and_remote =

   194         max_local_and_remote

   195         |> (if String.isPrefix remote_prefix prover then apsnd else apfst)

   196               (Integer.add ~1)

   197     in prover :: avoid_too_many_threads ctxt max_local_and_remote provers end

   199 val max_default_remote_threads = 4

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

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

   203 fun default_provers_param_value ctxt =

   204   [spassN, eN, vampireN, SMT_Solver.solver_name_of ctxt, e_sineN, waldmeisterN]

   205   |> map_filter (remotify_prover_if_not_installed ctxt)

   206   |> avoid_too_many_threads ctxt (Multithreading.max_threads_value (),

   207                                   max_default_remote_threads)

   208   |> implode_param

   210 fun set_default_raw_param param thy =

   211   let val ctxt = Proof_Context.init_global thy in

   212     thy |> Data.map (AList.update (op =) (normalize_raw_param ctxt param))

   213   end

   214 fun default_raw_params ctxt =

   215   let val thy = Proof_Context.theory_of ctxt in

   216     Data.get thy

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

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

   219                             "" => default_provers_param_value ctxt

   220                           | s => s]),

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

   222                            [if timeout <= 0 then "none"

   223                             else string_of_int timeout]

   224                          end)]

   225   end

   227 val infinity_time_in_secs = 60 * 60 * 24 * 365

   228 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   230 fun extract_params mode default_params override_params =

   231   let

   232     val raw_params = rev override_params @ rev default_params

   233     val lookup = Option.map implode_param o AList.lookup (op =) raw_params

   234     val lookup_string = the_default "" o lookup

   235     fun general_lookup_bool option default_value name =

   236       case lookup name of

   237         SOME s => parse_bool_option option name s

   238       | NONE => default_value

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

   240     fun lookup_time name =

   241       case lookup name of

   242         SOME s => parse_time_option name s

   243       | NONE => NONE

   244     fun lookup_int name =

   245       case lookup name of

   246         NONE => 0

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

   248                     SOME n => n

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

   250                                    " must be assigned an integer value.")

   251     fun lookup_real_pair name =

   252       case lookup name of

   253         NONE => (0.0, 0.0)

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

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

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

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

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

   259     fun lookup_option lookup' name =

   260       case lookup name of

   261         SOME "smart" => NONE

   262       | _ => SOME (lookup' name)

   263     val debug = mode <> Auto_Try andalso lookup_bool "debug"

   264     val verbose = debug orelse (mode <> Auto_Try andalso lookup_bool "verbose")

   265     val overlord = lookup_bool "overlord"

   266     val blocking =

   267       Isabelle_Process.is_active () orelse mode <> Normal orelse debug orelse

   268       lookup_bool "blocking"

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

   270                   |> mode = Auto_Try ? single o hd

   271     val type_enc =

   272       if mode = Auto_Try then

   273         NONE

   274       else case lookup_string "type_enc" of

   275         "smart" => NONE

   276       | s => (type_enc_from_string Sound s; SOME s)

   277     val sound = mode = Auto_Try orelse lookup_bool "sound"

   278     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   279     val max_relevant = lookup_option lookup_int "max_relevant"

   280     val max_mono_iters = lookup_int "max_mono_iters"

   281     val max_new_mono_instances = lookup_int "max_new_mono_instances"

   282     val isar_proof = lookup_bool "isar_proof"

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

   284     val slicing = mode <> Auto_Try andalso lookup_bool "slicing"

   285     val timeout =

   286       (if mode = Auto_Try then NONE else lookup_time "timeout") |> the_timeout

   287     val preplay_timeout =

   288       if mode = Auto_Try then Time.zeroTime

   289       else lookup_time "preplay_timeout" |> the_timeout

   290     val expect = lookup_string "expect"

   291   in

   292     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   293      provers = provers, relevance_thresholds = relevance_thresholds,

   294      max_relevant = max_relevant, max_mono_iters = max_mono_iters,

   295      max_new_mono_instances = max_new_mono_instances, type_enc = type_enc,

   296      sound = sound, isar_proof = isar_proof,

   297      isar_shrink_factor = isar_shrink_factor, slicing = slicing,

   298      timeout = timeout, preplay_timeout = preplay_timeout, expect = expect}

   299   end

   301 fun get_params mode = extract_params mode o default_raw_params

   302 fun default_params thy = get_params Normal thy o map (apsnd single)

   304 (* Sledgehammer the given subgoal *)

   306 val default_minimize_prover = Metis_Tactic.metisN

   308 fun is_raw_param_relevant_for_minimize (name, _) =

   309   member (op =) params_for_minimize name

   310 fun string_for_raw_param (key, values) =

   311   key ^ (case implode_param values of "" => "" | value => " = " ^ value)

   313 fun minimize_command override_params i prover_name fact_names =

   314   let

   315     val params =

   316       override_params

   317       |> filter is_raw_param_relevant_for_minimize

   318       |> map string_for_raw_param

   319       |> (if prover_name = default_minimize_prover then I else cons prover_name)

   320       |> space_implode ", "

   321   in

   322     sledgehammerN ^ " " ^ minN ^

   323     (if params = "" then "" else enclose " [" "]" params) ^

   324     " (" ^ space_implode " " fact_names ^ ")" ^

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

   326   end

   328 fun hammer_away override_params subcommand opt_i relevance_override state =

   329   let

   330     val ctxt = Proof.context_of state

   331     val override_params = override_params |> map (normalize_raw_param ctxt)

   332   in

   333     if subcommand = runN then

   334       let val i = the_default 1 opt_i in

   335         run_sledgehammer (get_params Normal ctxt override_params) Normal i

   336                          relevance_override (minimize_command override_params i)

   337                          state

   338         |> K ()

   339       end

   340     else if subcommand = minN then

   341       run_minimize (get_params Minimize ctxt

   342                                (("provers", [default_minimize_prover]) ::

   343                                 override_params))

   344                    (the_default 1 opt_i) (#add relevance_override) state

   345     else if subcommand = messagesN then

   346       messages opt_i

   347     else if subcommand = supported_proversN then

   348       supported_provers ctxt

   349     else if subcommand = running_proversN then

   350       running_provers ()

   351     else if subcommand = kill_proversN then

   352       kill_provers ()

   353     else if subcommand = refresh_tptpN then

   354       refresh_systems_on_tptp ()

   355     else

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

   357   end

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

   360   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   361                  o Toplevel.proof_of)

   363 fun string_for_raw_param (name, value) = name ^ " = " ^ implode_param value

   365 fun sledgehammer_params_trans params =

   366   Toplevel.theory

   367       (fold set_default_raw_param params

   368        #> tap (fn thy =>

   369                   let val ctxt = Proof_Context.init_global thy in

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

   371                              (case default_raw_params ctxt |> rev of

   372                                 [] => "none"

   373                               | params =>

   374                                 params |> map string_for_raw_param

   375                                        |> sort_strings |> cat_lines))

   376                   end))

   378 val parse_query_bang = Parse.$$$ "?" || Parse.$$$ "!" || Parse.$$$ "!!"

   379 val parse_key =

   380   Scan.repeat1 (Parse.typ_group || parse_query_bang) >> implode_param

   381 val parse_value =

   382   Scan.repeat1 (Parse.xname || Parse.float_number || parse_query_bang)

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

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

   385 val parse_fact_refs =

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

   387 val parse_relevance_chunk =

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

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

   390   || (parse_fact_refs >> only_relevance_override)

   391 val parse_relevance_override =

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

   393                               >> merge_relevance_overrides))

   394                 no_relevance_override

   395 val parse_sledgehammer_command =

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

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

   398 val parse_sledgehammer_params_command =

   399   parse_params #>> sledgehammer_params_trans

   401 val _ =

   402   Outer_Syntax.improper_command sledgehammerN

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

   404       parse_sledgehammer_command

   405 val _ =

   406   Outer_Syntax.command sledgehammer_paramsN

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

   408       parse_sledgehammer_params_command

   410 fun try_sledgehammer auto state =

   411   let

   412     val ctxt = Proof.context_of state

   413     val mode = if auto then Auto_Try else Try

   414     val i = 1

   415   in

   416     run_sledgehammer (get_params mode ctxt []) mode i no_relevance_override

   417                      (minimize_command [] i) state

   418   end

   420 val setup = Try.register_tool (sledgehammerN, (40, auto, try_sledgehammer))

   422 end;

author	blanchet
	Fri, 23 Sep 2011 16:44:51 +0200
changeset 45929	b3b50d8b535a
parent 45913	59ca831deef4
child 46385	973bb7846505
permissions	-rw-r--r--