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_Systems

    23 open ATP_Translate

    24 open Sledgehammer_Util

    25 open Sledgehammer_Filter

    26 open Sledgehammer_Provers

    27 open Sledgehammer_Minimize

    28 open Sledgehammer_Run

    30 val sledgehammerN = "sledgehammer"

    31 val sledgehammer_paramsN = "sledgehammer_params"

    33 val runN = "run"

    34 val minN = "min"

    35 val messagesN = "messages"

    36 val supported_proversN = "supported_provers"

    37 val running_proversN = "running_provers"

    38 val kill_proversN = "kill_provers"

    39 val refresh_tptpN = "refresh_tptp"

    41 val auto = Unsynchronized.ref false

    43 val _ =

    44   ProofGeneralPgip.add_preference Preferences.category_tracing

    45       (Preferences.bool_pref auto "auto-sledgehammer"

    46            "Run Sledgehammer automatically.")

    48 (** Sledgehammer commands **)

    50 fun add_relevance_override ns : relevance_override =

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

    52 fun del_relevance_override ns : relevance_override =

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

    54 fun only_relevance_override ns : relevance_override =

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

    56 fun merge_relevance_override_pairwise (r1 : relevance_override)

    57                                       (r2 : relevance_override) =

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

    59    only = #only r1 andalso #only r2}

    60 fun merge_relevance_overrides rs =

    61   fold merge_relevance_override_pairwise rs (only_relevance_override [])

    63 (*** parameters ***)

    65 val provers = Unsynchronized.ref ""

    66 val timeout = Unsynchronized.ref 30

    68 val _ =

    69   ProofGeneralPgip.add_preference Preferences.category_proof

    70       (Preferences.string_pref provers

    71           "Sledgehammer: Provers"

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

    74 val _ =

    75   ProofGeneralPgip.add_preference Preferences.category_proof

    76       (Preferences.int_pref timeout

    77           "Sledgehammer: Time Limit"

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

    80 type raw_param = string * string list

    82 val default_default_params =

    83   [("debug", "false"),

    84    ("verbose", "false"),

    85    ("overlord", "false"),

    86    ("blocking", "false"),

    87    ("type_enc", "smart"),

    88    ("sound", "false"),

    89    ("relevance_thresholds", "0.45 0.85"),

    90    ("max_relevant", "smart"),

    91    ("max_mono_iters", "3"),

    92    ("max_new_mono_instances", "200"),

    93    ("isar_proof", "false"),

    94    ("isar_shrink_factor", "1"),

    95    ("slicing", "true"),

    96    ("preplay_timeout", "4")]

    98 val alias_params =

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

   100 val negated_alias_params =

   101   [("no_debug", "debug"),

   102    ("quiet", "verbose"),

   103    ("no_overlord", "overlord"),

   104    ("non_blocking", "blocking"),

   105    ("unsound", "sound"),

   106    ("no_isar_proof", "isar_proof"),

   107    ("no_slicing", "slicing")]

   109 val params_for_minimize =

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

   111    "max_new_mono_instances", "isar_proof", "isar_shrink_factor", "timeout",

   112    "preplay_timeout"]

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

   116 fun is_known_raw_param s =

   117   AList.defined (op =) default_default_params s orelse

   118   AList.defined (op =) alias_params s orelse

   119   AList.defined (op =) negated_alias_params s orelse

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

   122 fun is_prover_list ctxt s =

   123   case space_explode " " s of

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

   125   | _ => false

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

   140    feature. *)

   141 fun normalize_raw_param ctxt =

   142   unalias_raw_param

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

   144          if is_known_raw_param name then

   145            (name, value)

   146          else if is_prover_list ctxt name andalso null value then

   147            ("provers", [name])

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

   149            ("type_enc", [name])

   150          else

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

   154 (* Ensure that type systems such as "mono_simple?" and "mono_guards!!" are

   155    handled correctly. *)

   156 fun implode_param [s, "?"] = s ^ "?"

   157   | implode_param [s, "??"] = s ^ "??"

   158   | implode_param [s, "!"] = s ^ "!"

   159   | implode_param [s, "!!"] = s ^ "!!"

   160   | implode_param ss = space_implode " " ss

   162 structure Data = Theory_Data

   163 (

   164   type T = raw_param list

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

   166   val extend = I

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

   168 )

   170 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   171   if String.isPrefix remote_prefix name then

   172     SOME name

   173   else

   174     let val remote_name = remote_prefix ^ name in

   175       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   176     end

   178 fun remotify_prover_if_not_installed ctxt name =

   179   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   180     SOME name

   181   else

   182     remotify_prover_if_supported_and_not_already_remote ctxt name

   184 fun avoid_too_many_threads _ _ [] = []

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

   186   | avoid_too_many_threads ctxt (0, max_remote) provers =

   187     provers

   188     |> map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   189     |> take max_remote

   190   | avoid_too_many_threads _ (max_local, 0) provers =

   191     provers

   192     |> filter_out (String.isPrefix remote_prefix)

   193     |> take max_local

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

   195     let

   196       val max_local_and_remote =

   197         max_local_and_remote

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

   199               (Integer.add ~1)

   200     in prover :: avoid_too_many_threads ctxt max_local_and_remote provers end

   202 val max_default_remote_threads = 4

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

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

   206 fun default_provers_param_value ctxt =

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

   208   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   210                                   max_default_remote_threads)

   211   |> implode_param

   213 fun set_default_raw_param param thy =

   214   let val ctxt = Proof_Context.init_global thy in

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

   216   end

   217 fun default_raw_params ctxt =

   218   let val thy = Proof_Context.theory_of ctxt in

   219     Data.get thy

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

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

   222                             "" => default_provers_param_value ctxt

   223                           | s => s]),

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

   225                            [if timeout <= 0 then "none"

   226                             else string_of_int timeout]

   227                          end)]

   228   end

   230 val infinity_time_in_secs = 60 * 60 * 24 * 365

   231 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   233 fun extract_params mode default_params override_params =

   234   let

   235     val raw_params = rev override_params @ rev default_params

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

   237     val lookup_string = the_default "" o lookup

   238     fun general_lookup_bool option default_value name =

   239       case lookup name of

   240         SOME s => parse_bool_option option name s

   241       | NONE => default_value

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

   243     fun lookup_time name =

   244       case lookup name of

   245         SOME s => parse_time_option name s

   246       | NONE => NONE

   247     fun lookup_int name =

   248       case lookup name of

   249         NONE => 0

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

   251                     SOME n => n

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

   253                                    " must be assigned an integer value.")

   254     fun lookup_real_pair name =

   255       case lookup name of

   256         NONE => (0.0, 0.0)

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

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

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

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

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

   262     fun lookup_option lookup' name =

   263       case lookup name of

   264         SOME "smart" => NONE

   265       | _ => SOME (lookup' name)

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

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

   268     val overlord = lookup_bool "overlord"

   269     val blocking =

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

   271       lookup_bool "blocking"

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

   273                   |> mode = Auto_Try ? single o hd

   274     val type_enc =

   275       if mode = Auto_Try then

   276         NONE

   277       else case lookup_string "type_enc" of

   278         "smart" => NONE

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

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

   281     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   282     val max_relevant = lookup_option lookup_int "max_relevant"

   283     val max_mono_iters = lookup_int "max_mono_iters"

   284     val max_new_mono_instances = lookup_int "max_new_mono_instances"

   285     val isar_proof = lookup_bool "isar_proof"

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

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

   288     val timeout =

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

   290     val preplay_timeout =

   291       if mode = Auto_Try then Time.zeroTime

   292       else lookup_time "preplay_timeout" |> the_timeout

   293     val expect = lookup_string "expect"

   294   in

   295     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   296      provers = provers, relevance_thresholds = relevance_thresholds,

   297      max_relevant = max_relevant, max_mono_iters = max_mono_iters,

   298      max_new_mono_instances = max_new_mono_instances, type_enc = type_enc,

   299      sound = sound, isar_proof = isar_proof,

   300      isar_shrink_factor = isar_shrink_factor, slicing = slicing,

   301      timeout = timeout, preplay_timeout = preplay_timeout, expect = expect}

   302   end

   304 fun get_params mode = extract_params mode o default_raw_params

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

   307 (* Sledgehammer the given subgoal *)

   309 val default_minimize_prover = Metis_Tactic.metisN

   311 fun is_raw_param_relevant_for_minimize (name, _) =

   312   member (op =) params_for_minimize name

   313 fun string_for_raw_param (key, values) =

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

   316 fun minimize_command override_params i prover_name fact_names =

   317   let

   318     val params =

   319       override_params

   320       |> filter is_raw_param_relevant_for_minimize

   321       |> map string_for_raw_param

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

   323       |> space_implode ", "

   324   in

   325     sledgehammerN ^ " " ^ minN ^

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

   327     " (" ^ space_implode " " fact_names ^ ")" ^

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

   329   end

   331 fun hammer_away override_params subcommand opt_i relevance_override state =

   332   let

   333     val ctxt = Proof.context_of state

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

   335   in

   336     if subcommand = runN then

   337       let val i = the_default 1 opt_i in

   338         run_sledgehammer (get_params Normal ctxt override_params) Normal i

   339                          relevance_override (minimize_command override_params i)

   340                          state

   341         |> K ()

   342       end

   343     else if subcommand = minN then

   344       run_minimize (get_params Minimize ctxt

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

   346                                 override_params))

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

   348     else if subcommand = messagesN then

   349       messages opt_i

   350     else if subcommand = supported_proversN then

   351       supported_provers ctxt

   352     else if subcommand = running_proversN then

   353       running_provers ()

   354     else if subcommand = kill_proversN then

   355       kill_provers ()

   356     else if subcommand = refresh_tptpN then

   357       refresh_systems_on_tptp ()

   358     else

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

   360   end

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

   363   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   364                  o Toplevel.proof_of)

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

   368 fun sledgehammer_params_trans params =

   369   Toplevel.theory

   370       (fold set_default_raw_param params

   371        #> tap (fn thy =>

   372                   let val ctxt = Proof_Context.init_global thy in

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

   374                              (case default_raw_params ctxt |> rev of

   375                                 [] => "none"

   376                               | params =>

   377                                 params |> map string_for_raw_param

   378                                        |> sort_strings |> cat_lines))

   379                   end))

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

   382 val parse_key =

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

   384 val parse_value =

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

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

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

   388 val parse_fact_refs =

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

   390 val parse_relevance_chunk =

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

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

   393   || (parse_fact_refs >> only_relevance_override)

   394 val parse_relevance_override =

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

   396                               >> merge_relevance_overrides))

   397                 no_relevance_override

   398 val parse_sledgehammer_command =

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

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

   401 val parse_sledgehammer_params_command =

   402   parse_params #>> sledgehammer_params_trans

   404 val _ =

   405   Outer_Syntax.improper_command sledgehammerN

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

   407       parse_sledgehammer_command

   408 val _ =

   409   Outer_Syntax.command sledgehammer_paramsN

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

   411       parse_sledgehammer_params_command

   413 fun try_sledgehammer auto state =

   414   let

   415     val ctxt = Proof.context_of state

   416     val mode = if auto then Auto_Try else Try

   417     val i = 1

   418   in

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

   420                      (minimize_command [] i) state

   421   end

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

   425 end;

author	blanchet
	Wed, 07 Sep 2011 09:10:41 +0200
changeset 45639	a7bc1bdb8bb4
parent 45591	f3a8c19708c8
child 45652	c9a081ef441d
permissions	-rw-r--r--