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 ss = space_implode " " ss

   160 structure Data = Theory_Data

   161 (

   162   type T = raw_param list

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

   164   val extend = I

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

   166 )

   168 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   169   if String.isPrefix remote_prefix name then

   170     SOME name

   171   else

   172     let val remote_name = remote_prefix ^ name in

   173       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   174     end

   176 fun remotify_prover_if_not_installed ctxt name =

   177   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   178     SOME name

   179   else

   180     remotify_prover_if_supported_and_not_already_remote ctxt name

   182 fun avoid_too_many_threads _ _ [] = []

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

   184   | avoid_too_many_threads ctxt (0, max_remote) provers =

   185     provers

   186     |> map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   187     |> take max_remote

   188   | avoid_too_many_threads _ (max_local, 0) provers =

   189     provers

   190     |> filter_out (String.isPrefix remote_prefix)

   191     |> take max_local

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

   193     let

   194       val max_local_and_remote =

   195         max_local_and_remote

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

   197               (Integer.add ~1)

   198     in prover :: avoid_too_many_threads ctxt max_local_and_remote provers end

   200 val max_default_remote_threads = 4

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

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

   204 fun default_provers_param_value ctxt =

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

   206   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   208                                   max_default_remote_threads)

   209   |> implode_param

   211 fun set_default_raw_param param thy =

   212   let val ctxt = Proof_Context.init_global thy in

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

   214   end

   215 fun default_raw_params ctxt =

   216   let val thy = Proof_Context.theory_of ctxt in

   217     Data.get thy

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

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

   220                             "" => default_provers_param_value ctxt

   221                           | s => s]),

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

   223                            [if timeout <= 0 then "none"

   224                             else string_of_int timeout]

   225                          end)]

   226   end

   228 val infinity_time_in_secs = 60 * 60 * 24 * 365

   229 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   231 fun extract_params mode default_params override_params =

   232   let

   233     val raw_params = rev override_params @ rev default_params

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

   235     val lookup_string = the_default "" o lookup

   236     fun general_lookup_bool option default_value name =

   237       case lookup name of

   238         SOME s => parse_bool_option option name s

   239       | NONE => default_value

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

   241     fun lookup_time name =

   242       case lookup name of

   243         SOME s => parse_time_option name s

   244       | NONE => NONE

   245     fun lookup_int name =

   246       case lookup name of

   247         NONE => 0

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

   249                     SOME n => n

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

   251                                    " must be assigned an integer value.")

   252     fun lookup_real_pair name =

   253       case lookup name of

   254         NONE => (0.0, 0.0)

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

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

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

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

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

   260     fun lookup_option lookup' name =

   261       case lookup name of

   262         SOME "smart" => NONE

   263       | _ => SOME (lookup' name)

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

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

   266     val overlord = lookup_bool "overlord"

   267     val blocking =

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

   269       lookup_bool "blocking"

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

   271                   |> mode = Auto_Try ? single o hd

   272     val type_enc =

   273       if mode = Auto_Try then

   274         NONE

   275       else case lookup_string "type_enc" of

   276         "smart" => NONE

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

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

   279     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   280     val max_relevant = lookup_option lookup_int "max_relevant"

   281     val max_mono_iters = lookup_int "max_mono_iters"

   282     val max_new_mono_instances = lookup_int "max_new_mono_instances"

   283     val isar_proof = lookup_bool "isar_proof"

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

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

   286     val timeout =

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

   288     val preplay_timeout =

   289       if mode = Auto_Try then Time.zeroTime

   290       else lookup_time "preplay_timeout" |> the_timeout

   291     val expect = lookup_string "expect"

   292   in

   293     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   294      provers = provers, relevance_thresholds = relevance_thresholds,

   295      max_relevant = max_relevant, max_mono_iters = max_mono_iters,

   296      max_new_mono_instances = max_new_mono_instances, type_enc = type_enc,

   297      sound = sound, isar_proof = isar_proof,

   298      isar_shrink_factor = isar_shrink_factor, slicing = slicing,

   299      timeout = timeout, preplay_timeout = preplay_timeout, expect = expect}

   300   end

   302 fun get_params mode = extract_params mode o default_raw_params

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

   305 (* Sledgehammer the given subgoal *)

   307 val default_minimize_prover = Metis_Tactic.metisN

   309 fun is_raw_param_relevant_for_minimize (name, _) =

   310   member (op =) params_for_minimize name

   311 fun string_for_raw_param (key, values) =

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

   314 fun minimize_command override_params i prover_name fact_names =

   315   let

   316     val params =

   317       override_params

   318       |> filter is_raw_param_relevant_for_minimize

   319       |> map string_for_raw_param

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

   321       |> space_implode ", "

   322   in

   323     sledgehammerN ^ " " ^ minN ^

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

   325     " (" ^ space_implode " " fact_names ^ ")" ^

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

   327   end

   329 fun hammer_away override_params subcommand opt_i relevance_override state =

   330   let

   331     val ctxt = Proof.context_of state

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

   333   in

   334     if subcommand = runN then

   335       let val i = the_default 1 opt_i in

   336         run_sledgehammer (get_params Normal ctxt override_params) Normal i

   337                          relevance_override (minimize_command override_params i)

   338                          state

   339         |> K ()

   340       end

   341     else if subcommand = minN then

   342       run_minimize (get_params Minimize ctxt

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

   344                                 override_params))

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

   346     else if subcommand = messagesN then

   347       messages opt_i

   348     else if subcommand = supported_proversN then

   349       supported_provers ctxt

   350     else if subcommand = running_proversN then

   351       running_provers ()

   352     else if subcommand = kill_proversN then

   353       kill_provers ()

   354     else if subcommand = refresh_tptpN then

   355       refresh_systems_on_tptp ()

   356     else

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

   358   end

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

   361   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   362                  o Toplevel.proof_of)

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

   366 fun sledgehammer_params_trans params =

   367   Toplevel.theory

   368       (fold set_default_raw_param params

   369        #> tap (fn thy =>

   370                   let val ctxt = Proof_Context.init_global thy in

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

   372                              (case default_raw_params ctxt |> rev of

   373                                 [] => "none"

   374                               | params =>

   375                                 params |> map string_for_raw_param

   376                                        |> sort_strings |> cat_lines))

   377                   end))

   379 val parse_key =

   380   Scan.repeat1 (Parse.typ_group || Parse.$$$ "?" || Parse.$$$ "!")

   381   >> implode_param

   382 val parse_value =

   383   Scan.repeat1 (Parse.xname || Parse.float_number || Parse.$$$ "?"

   384                 || Parse.$$$ "!")

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

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

   387 val parse_fact_refs =

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

   389 val parse_relevance_chunk =

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

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

   392   || (parse_fact_refs >> only_relevance_override)

   393 val parse_relevance_override =

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

   395                               >> merge_relevance_overrides))

   396                 no_relevance_override

   397 val parse_sledgehammer_command =

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

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

   400 val parse_sledgehammer_params_command =

   401   parse_params #>> sledgehammer_params_trans

   403 val _ =

   404   Outer_Syntax.improper_command sledgehammerN

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

   406       parse_sledgehammer_command

   407 val _ =

   408   Outer_Syntax.command sledgehammer_paramsN

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

   410       parse_sledgehammer_params_command

   412 fun try_sledgehammer auto state =

   413   let

   414     val ctxt = Proof.context_of state

   415     val mode = if auto then Auto_Try else Try

   416     val i = 1

   417   in

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

   419                      (minimize_command [] i) state

   420   end

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

   424 end;

author	blanchet
	Mon, 05 Sep 2011 14:42:31 +0200
changeset 45591	f3a8c19708c8
parent 45515	5d6a11e166cf
child 45639	a7bc1bdb8bb4
permissions	-rw-r--r--