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 full_types : bool Unsynchronized.ref

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

    17   val setup : theory -> theory

    18 end;

    20 structure Sledgehammer_Isar : SLEDGEHAMMER_ISAR =

    21 struct

    23 open ATP_Systems

    24 open Sledgehammer_Util

    25 open Sledgehammer_ATP_Translate

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

    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

    68 val full_types = Unsynchronized.ref false

    70 val _ =

    71   ProofGeneralPgip.add_preference Preferences.category_proof

    72       (Preferences.string_pref provers

    73           "Sledgehammer: Provers"

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

    76 val _ =

    77   ProofGeneralPgip.add_preference Preferences.category_proof

    78       (Preferences.int_pref timeout

    79           "Sledgehammer: Time Limit"

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

    82 val _ =

    83   ProofGeneralPgip.add_preference Preferences.category_proof

    84       (Preferences.bool_pref full_types

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

    87 type raw_param = string * string list

    89 val default_default_params =

    90   [("debug", "false"),

    91    ("verbose", "false"),

    92    ("overlord", "false"),

    93    ("blocking", "false"),

    94    ("type_sys", "smart"),

    95    ("relevance_thresholds", "0.45 0.85"),

    96    ("max_relevant", "smart"),

    97    ("max_mono_iters", "3"),

    98    ("max_new_mono_instances", "400"),

    99    ("explicit_apply", "false"),

   100    ("isar_proof", "false"),

   101    ("isar_shrink_factor", "1"),

   102    ("slicing", "true"),

   103    ("preplay_timeout", "5")]

   105 val alias_params =

   106   [("prover", "provers"),

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

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

   109 val negated_alias_params =

   110   [("no_debug", "debug"),

   111    ("quiet", "verbose"),

   112    ("no_overlord", "overlord"),

   113    ("non_blocking", "blocking"),

   114    ("partial_types", "full_types"),

   115    ("implicit_apply", "explicit_apply"),

   116    ("no_isar_proof", "isar_proof"),

   117    ("no_slicing", "slicing")]

   119 val params_for_minimize =

   120   ["debug", "verbose", "overlord", "type_sys", "full_types", "max_mono_iters",

   121    "max_new_mono_instances", "isar_proof", "isar_shrink_factor", "timeout",

   122    "preplay_timeout"]

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

   126 fun is_known_raw_param s =

   127   AList.defined (op =) default_default_params s orelse

   128   AList.defined (op =) alias_params s orelse

   129   AList.defined (op =) negated_alias_params s orelse

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

   132 fun is_prover_list ctxt s =

   133   case space_explode " " s of

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

   135   | _ => false

   137 (* Secret feature: "provers =" and "type_sys =" can be left out. *)

   138 fun check_and_repair_raw_param ctxt (name, value) =

   139   if is_known_raw_param name then

   140     (name, value)

   141   else if is_prover_list ctxt name andalso null value then

   142     ("provers", [name])

   143   else if can type_sys_from_string name andalso null value then

   144     ("type_sys", [name])

   145   else

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

   148 fun unalias_raw_param (name, value) =

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

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

   151   | NONE =>

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

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

   154                               ["false"] => ["true"]

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

   156                             | [] => ["false"]

   157                             | _ => value)

   158     | NONE => (name, value)

   160 (* Ensure that type systems such as "simple!" and "mangled_preds?" are handled

   161    correctly. *)

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

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

   164   | implode_param ss = space_implode " " ss

   166 structure Data = Theory_Data

   167 (

   168   type T = raw_param list

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

   170   val extend = I

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

   172 )

   174 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   175   if String.isPrefix remote_prefix name then

   176     SOME name

   177   else

   178     let val remote_name = remote_prefix ^ name in

   179       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   180     end

   182 fun remotify_prover_if_not_installed ctxt name =

   183   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   184     SOME name

   185   else

   186     remotify_prover_if_supported_and_not_already_remote ctxt name

   188 fun avoid_too_many_threads _ _ [] = []

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

   190   | avoid_too_many_threads ctxt (0, max_remote) provers =

   191     provers

   192     |> map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   193     |> take max_remote

   194   | avoid_too_many_threads _ (max_local, 0) provers =

   195     provers

   196     |> filter_out (String.isPrefix remote_prefix)

   197     |> take max_local

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

   199     let

   200       val max_local_and_remote =

   201         max_local_and_remote

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

   203               (Integer.add ~1)

   204     in prover :: avoid_too_many_threads ctxt max_local_and_remote provers end

   206 val max_default_remote_threads = 4

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

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

   210 fun default_provers_param_value ctxt =

   211   [spassN, eN, vampireN, SMT_Solver.solver_name_of ctxt, sine_eN, waldmeisterN]

   212   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   214                                   max_default_remote_threads)

   215   |> implode_param

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

   218 fun default_raw_params ctxt =

   219   let val thy = Proof_Context.theory_of ctxt in

   220     Data.get thy

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

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

   223                             "" => default_provers_param_value ctxt

   224                           | s => s]),

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

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

   227                            [if timeout <= 0 then "none"

   228                             else string_of_int timeout]

   229                          end)]

   230   end

   232 val infinity_time_in_secs = 60 * 60 * 24 * 365

   233 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   235 fun extract_params mode default_params override_params =

   236   let

   237     val override_params = map unalias_raw_param override_params

   238     val raw_params = rev override_params @ rev default_params

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

   240     val lookup_string = the_default "" o lookup

   241     fun general_lookup_bool option default_value name =

   242       case lookup name of

   243         SOME s => parse_bool_option option name s

   244       | NONE => default_value

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

   246     fun lookup_time name =

   247       case lookup name of

   248         SOME s => parse_time_option name s

   249       | NONE => NONE

   250     fun lookup_int name =

   251       case lookup name of

   252         NONE => 0

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

   254                     SOME n => n

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

   256                                    " must be assigned an integer value.")

   257     fun lookup_real_pair name =

   258       case lookup name of

   259         NONE => (0.0, 0.0)

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

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

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

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

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

   265     fun lookup_int_option name =

   266       case lookup name of

   267         SOME "smart" => NONE

   268       | _ => SOME (lookup_int name)

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

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

   271     val overlord = lookup_bool "overlord"

   272     val blocking =

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

   274       lookup_bool "blocking"

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

   276                   |> mode = Auto_Try ? single o hd

   277     val type_sys =

   278       if mode = Auto_Try then

   279         Smart_Type_Sys true

   280       else case lookup_string "type_sys" of

   281         "smart" => Smart_Type_Sys (mode = Try orelse lookup_bool "full_types")

   282       | s => Dumb_Type_Sys (type_sys_from_string s)

   283     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   284     val max_relevant = lookup_int_option "max_relevant"

   285     val max_mono_iters = lookup_int "max_mono_iters"

   286     val max_new_mono_instances = lookup_int "max_new_mono_instances"

   287     val explicit_apply = lookup_bool "explicit_apply"

   288     val isar_proof = lookup_bool "isar_proof"

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

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

   291     val timeout =

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

   293     val preplay_timeout =

   294       if mode = Auto_Try then Time.zeroTime

   295       else lookup_time "preplay_timeout" |> the_timeout

   296     val expect = lookup_string "expect"

   297   in

   298     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   299      provers = provers, relevance_thresholds = relevance_thresholds,

   300      max_relevant = max_relevant, max_mono_iters = max_mono_iters,

   301      max_new_mono_instances = max_new_mono_instances, type_sys = type_sys,

   302      explicit_apply = explicit_apply, isar_proof = isar_proof,

   303      isar_shrink_factor = isar_shrink_factor, slicing = slicing,

   304      timeout = timeout, preplay_timeout = preplay_timeout, expect = expect}

   305   end

   307 fun get_params mode ctxt = extract_params mode (default_raw_params ctxt)

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

   310 (* Sledgehammer the given subgoal *)

   312 val is_raw_param_relevant_for_minimize =

   313   member (op =) params_for_minimize o fst o unalias_raw_param

   314 fun string_for_raw_param (key, values) =

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

   317 fun minimize_command override_params i prover_name fact_names =

   318   sledgehammerN ^ " " ^ minN ^ " [" ^ prover_name ^

   319   (override_params |> filter is_raw_param_relevant_for_minimize

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

   321   "] (" ^ space_implode " " fact_names ^ ")" ^

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

   324 fun hammer_away override_params subcommand opt_i relevance_override state =

   325   let

   326     val ctxt = Proof.context_of state

   327     val override_params =

   328       override_params |> map (check_and_repair_raw_param ctxt)

   329   in

   330     if subcommand = runN then

   331       let val i = the_default 1 opt_i in

   332         run_sledgehammer (get_params Normal ctxt override_params) Normal i

   333                          relevance_override (minimize_command override_params i)

   334                          state

   335         |> K ()

   336       end

   337     else if subcommand = minN then

   338       run_minimize (get_params Minimize ctxt override_params)

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

   340     else if subcommand = messagesN then

   341       messages opt_i

   342     else if subcommand = supported_proversN then

   343       supported_provers ctxt

   344     else if subcommand = running_proversN then

   345       running_provers ()

   346     else if subcommand = kill_proversN then

   347       kill_provers ()

   348     else if subcommand = refresh_tptpN then

   349       refresh_systems_on_tptp ()

   350     else

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

   352   end

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

   355   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   356                  o Toplevel.proof_of)

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

   360 fun sledgehammer_params_trans params =

   361   Toplevel.theory

   362       (fold set_default_raw_param params

   363        #> tap (fn thy =>

   364                   let val ctxt = Proof_Context.init_global thy in

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

   366                              (case default_raw_params ctxt |> rev of

   367                                 [] => "none"

   368                               | params =>

   369                                 params |> map (check_and_repair_raw_param ctxt)

   370                                        |> map string_for_raw_param

   371                                        |> sort_strings |> cat_lines))

   372                   end))

   374 val parse_key =

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

   376                >> implode_param

   377 val parse_value =

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

   379                 || Parse.$$$ "!")

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

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

   382 val parse_fact_refs =

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

   384 val parse_relevance_chunk =

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

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

   387   || (parse_fact_refs >> only_relevance_override)

   388 val parse_relevance_override =

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

   390                               >> merge_relevance_overrides))

   391                 no_relevance_override

   392 val parse_sledgehammer_command =

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

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

   395 val parse_sledgehammer_params_command =

   396   parse_params #>> sledgehammer_params_trans

   398 val _ =

   399   Outer_Syntax.improper_command sledgehammerN

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

   401       parse_sledgehammer_command

   402 val _ =

   403   Outer_Syntax.command sledgehammer_paramsN

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

   405       parse_sledgehammer_params_command

   407 fun try_sledgehammer auto state =

   408   let

   409     val ctxt = Proof.context_of state

   410     val mode = if auto then Auto_Try else Try

   411     val i = 1

   412   in

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

   414                      (minimize_command [] i) state

   415   end

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

   419 end;

author	blanchet
	Fri, 27 May 2011 10:30:08 +0200
changeset 43865	58150aa44941
parent 43862	5910dd009d0e
child 43875	18259246abb5
permissions	-rw-r--r--