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    ("max_mono_iters", "3"),

    86    ("max_new_mono_instances", "400"),

    87    ("explicit_apply", "false"),

    88    ("isar_proof", "false"),

    89    ("isar_shrink_factor", "1"),

    90    ("slicing", "true")]

    92 val alias_params =

    93   [("prover", "provers"),

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

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

    96 val negated_alias_params =

    97   [("no_debug", "debug"),

    98    ("quiet", "verbose"),

    99    ("no_overlord", "overlord"),

   100    ("non_blocking", "blocking"),

   101    ("partial_types", "full_types"),

   102    ("implicit_apply", "explicit_apply"),

   103    ("no_isar_proof", "isar_proof"),

   104    ("no_slicing", "slicing")]

   106 val params_for_minimize =

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

   108    "max_new_mono_instances", "isar_proof", "isar_shrink_factor", "timeout"]

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

   112 fun is_known_raw_param s =

   113   AList.defined (op =) default_default_params s orelse

   114   AList.defined (op =) alias_params s orelse

   115   AList.defined (op =) negated_alias_params s orelse

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

   118 fun is_prover_list ctxt s =

   119   case space_explode " " s of

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

   121   | _ => false

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

   124 fun check_and_repair_raw_param ctxt (name, value) =

   125   if is_known_raw_param name then

   126     (name, value)

   127   else if is_prover_list ctxt name andalso null value then

   128     ("provers", [name])

   129   else if can type_sys_from_string name andalso null value then

   130     ("type_sys", [name])

   131   else

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

   134 fun unalias_raw_param (name, value) =

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

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

   137   | NONE =>

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

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

   140                               ["false"] => ["true"]

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

   142                             | [] => ["false"]

   143                             | _ => value)

   144     | NONE => (name, value)

   146 structure Data = Theory_Data

   147 (

   148   type T = raw_param list

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

   150   val extend = I

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

   152 )

   154 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   155   if String.isPrefix remote_prefix name then

   156     SOME name

   157   else

   158     let val remote_name = remote_prefix ^ name in

   159       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   160     end

   162 fun remotify_prover_if_not_installed ctxt name =

   163   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   164     SOME name

   165   else

   166     remotify_prover_if_supported_and_not_already_remote ctxt name

   168 fun avoid_too_many_local_threads _ _ [] = []

   169   | avoid_too_many_local_threads ctxt 0 provers =

   170     map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   171                provers

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

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

   174       prover :: avoid_too_many_local_threads ctxt n provers

   175     end

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

   178    correctly. *)

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

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

   181   | implode_param ss = space_implode " " ss

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

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

   185 fun default_provers_param_value ctxt =

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

   187   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   189   |> implode_param

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

   192 fun default_raw_params ctxt =

   193   let val thy = Proof_Context.theory_of ctxt in

   194     Data.get thy

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

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

   197                             "" => default_provers_param_value ctxt

   198                           | s => s]),

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

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

   201                            [if timeout <= 0 then "none"

   202                             else string_of_int timeout]

   203                          end)]

   204   end

   206 val infinity_time_in_secs = 60 * 60 * 24 * 365

   207 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   209 fun extract_params auto default_params override_params =

   210   let

   211     val override_params = map unalias_raw_param override_params

   212     val raw_params = rev override_params @ rev default_params

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

   214     val lookup_string = the_default "" o lookup

   215     fun general_lookup_bool option default_value name =

   216       case lookup name of

   217         SOME s => parse_bool_option option name s

   218       | NONE => default_value

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

   220     fun lookup_time name =

   221       case lookup name of

   222         SOME s => parse_time_option name s

   223       | NONE => NONE

   224     fun lookup_int name =

   225       case lookup name of

   226         NONE => 0

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

   228                     SOME n => n

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

   230                                    " must be assigned an integer value.")

   231     fun lookup_real_pair name =

   232       case lookup name of

   233         NONE => (0.0, 0.0)

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

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

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

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

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

   239     fun lookup_int_option name =

   240       case lookup name of

   241         SOME "smart" => NONE

   242       | _ => SOME (lookup_int name)

   243     val debug = not auto andalso lookup_bool "debug"

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

   245     val overlord = lookup_bool "overlord"

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

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

   248                   |> auto ? single o hd

   249     val type_sys =

   250       if auto then

   251         Smart_Type_Sys true

   252       else case lookup_string "type_sys" of

   253         "smart" => Smart_Type_Sys (lookup_bool "full_types")

   254       | s => Dumb_Type_Sys (type_sys_from_string s)

   255     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   256     val max_relevant = lookup_int_option "max_relevant"

   257     val max_mono_iters = lookup_int "max_mono_iters"

   258     val max_new_mono_instances = lookup_int "max_new_mono_instances"

   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, max_mono_iters = max_mono_iters,

   269      max_new_mono_instances = max_new_mono_instances, type_sys = type_sys,

   270      explicit_apply = explicit_apply, isar_proof = isar_proof,

   271      isar_shrink_factor = isar_shrink_factor, slicing = slicing,

   272      timeout = timeout, expect = expect}

   273   end

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

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

   278 (* Sledgehammer the given subgoal *)

   280 val sledgehammerN = "sledgehammer"

   281 val sledgehammer_paramsN = "sledgehammer_params"

   283 val runN = "run"

   284 val minimizeN = "minimize"

   285 val messagesN = "messages"

   286 val supported_proversN = "supported_provers"

   287 val running_proversN = "running_provers"

   288 val kill_proversN = "kill_provers"

   289 val refresh_tptpN = "refresh_tptp"

   291 val is_raw_param_relevant_for_minimize =

   292   member (op =) params_for_minimize o fst o unalias_raw_param

   293 fun string_for_raw_param (key, values) =

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

   296 fun minimize_command override_params i prover_name fact_names =

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

   298   (override_params |> filter is_raw_param_relevant_for_minimize

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

   300   "] (" ^ space_implode " " fact_names ^ ")" ^

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

   303 fun hammer_away override_params subcommand opt_i relevance_override state =

   304   let

   305     val ctxt = Proof.context_of state

   306     val override_params =

   307       override_params |> map (check_and_repair_raw_param ctxt)

   308   in

   309     if subcommand = runN then

   310       let val i = the_default 1 opt_i in

   311         run_sledgehammer (get_params false ctxt override_params) false i

   312                          relevance_override (minimize_command override_params i)

   313                          state

   314         |> K ()

   315       end

   316     else if subcommand = minimizeN then

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

   318                    (#add relevance_override) state

   319     else if subcommand = messagesN then

   320       messages opt_i

   321     else if subcommand = supported_proversN then

   322       supported_provers ctxt

   323     else if subcommand = running_proversN then

   324       running_provers ()

   325     else if subcommand = kill_proversN then

   326       kill_provers ()

   327     else if subcommand = refresh_tptpN then

   328       refresh_systems_on_tptp ()

   329     else

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

   331   end

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

   334   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   335                  o Toplevel.proof_of)

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

   339 fun sledgehammer_params_trans params =

   340   Toplevel.theory

   341       (fold set_default_raw_param params

   342        #> tap (fn thy =>

   343                   let val ctxt = Proof_Context.init_global thy in

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

   345                              (case default_raw_params ctxt |> rev of

   346                                 [] => "none"

   347                               | params =>

   348                                 params |> map (check_and_repair_raw_param ctxt)

   349                                        |> map string_for_raw_param

   350                                        |> sort_strings |> cat_lines))

   351                   end))

   353 val parse_key =

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

   355                >> implode_param

   356 val parse_value =

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

   358                 || Parse.$$$ "!")

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

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

   361 val parse_fact_refs =

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

   363 val parse_relevance_chunk =

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

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

   366   || (parse_fact_refs >> only_relevance_override)

   367 val parse_relevance_override =

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

   369                               >> merge_relevance_overrides))

   370                 no_relevance_override

   371 val parse_sledgehammer_command =

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

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

   374 val parse_sledgehammer_params_command =

   375   parse_params #>> sledgehammer_params_trans

   377 val _ =

   378   Outer_Syntax.improper_command sledgehammerN

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

   380       parse_sledgehammer_command

   381 val _ =

   382   Outer_Syntax.command sledgehammer_paramsN

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

   384       parse_sledgehammer_params_command

   386 fun auto_sledgehammer state =

   387   let val ctxt = Proof.context_of state in

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

   389                      (minimize_command [] 1) state

   390   end

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

   394 end;

author	blanchet
	Fri, 13 May 2011 10:10:44 +0200
changeset 43654	226962b6a6d1
parent 43647	87389311ba78
child 43785	9e620869a576
permissions	-rw-r--r--