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_Provers

    26 open Sledgehammer_Minimize

    27 open Sledgehammer_Run

    29 val sledgehammerN = "sledgehammer"

    30 val sledgehammer_paramsN = "sledgehammer_params"

    32 val runN = "run"

    33 val minN = "min"

    34 val messagesN = "messages"

    35 val supported_proversN = "supported_provers"

    36 val running_proversN = "running_provers"

    37 val kill_proversN = "kill_provers"

    38 val refresh_tptpN = "refresh_tptp"

    40 val auto = Unsynchronized.ref false

    42 val _ =

    43   ProofGeneralPgip.add_preference Preferences.category_tracing

    44       (Preferences.bool_pref auto "auto-sledgehammer"

    45            "Run Sledgehammer automatically.")

    47 (** Sledgehammer commands **)

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

    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_sys", "smart"),

    88    ("relevance_thresholds", "0.45 0.85"),

    89    ("max_relevant", "smart"),

    90    ("max_mono_iters", "3"),

    91    ("max_new_mono_instances", "200"),

    92    ("isar_proof", "false"),

    93    ("isar_shrink_factor", "1"),

    94    ("slicing", "true"),

    95    ("preplay_timeout", "4")]

    97 val alias_params =

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

    99 val negated_alias_params =

   100   [("no_debug", "debug"),

   101    ("quiet", "verbose"),

   102    ("no_overlord", "overlord"),

   103    ("non_blocking", "blocking"),

   104    ("no_isar_proof", "isar_proof"),

   105    ("no_slicing", "slicing")]

   107 val params_for_minimize =

   108   ["debug", "verbose", "overlord", "type_sys", "max_mono_iters",

   109    "max_new_mono_instances", "isar_proof", "isar_shrink_factor", "timeout",

   110    "preplay_timeout"]

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

   114 fun is_known_raw_param s =

   115   AList.defined (op =) default_default_params s orelse

   116   AList.defined (op =) alias_params s orelse

   117   AList.defined (op =) negated_alias_params s orelse

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

   120 fun is_prover_list ctxt s =

   121   case space_explode " " s of

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

   123   | _ => false

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

   126 fun check_and_repair_raw_param ctxt (name, value) =

   127   if is_known_raw_param name then

   128     (name, value)

   129   else if is_prover_list ctxt name andalso null value then

   130     ("provers", [name])

   131   else if can type_sys_from_string name andalso null value then

   132     ("type_sys", [name])

   133   else

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

   136 fun unalias_raw_param (name, value) =

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

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

   139   | NONE =>

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

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

   142                               ["false"] => ["true"]

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

   144                             | [] => ["false"]

   145                             | _ => value)

   146     | NONE => (name, value)

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

   149    correctly. *)

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

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

   152   | implode_param ss = space_implode " " ss

   154 structure Data = Theory_Data

   155 (

   156   type T = raw_param list

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

   158   val extend = I

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

   160 )

   162 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   163   if String.isPrefix remote_prefix name then

   164     SOME name

   165   else

   166     let val remote_name = remote_prefix ^ name in

   167       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   168     end

   170 fun remotify_prover_if_not_installed ctxt name =

   171   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   172     SOME name

   173   else

   174     remotify_prover_if_supported_and_not_already_remote ctxt name

   176 fun avoid_too_many_threads _ _ [] = []

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

   178   | avoid_too_many_threads ctxt (0, max_remote) provers =

   179     provers

   180     |> map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   181     |> take max_remote

   182   | avoid_too_many_threads _ (max_local, 0) provers =

   183     provers

   184     |> filter_out (String.isPrefix remote_prefix)

   185     |> take max_local

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

   187     let

   188       val max_local_and_remote =

   189         max_local_and_remote

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

   191               (Integer.add ~1)

   192     in prover :: avoid_too_many_threads ctxt max_local_and_remote provers end

   194 val max_default_remote_threads = 4

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

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

   198 fun default_provers_param_value ctxt =

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

   200   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   202                                   max_default_remote_threads)

   203   |> implode_param

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

   206 fun default_raw_params ctxt =

   207   let val thy = Proof_Context.theory_of ctxt in

   208     Data.get thy

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

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

   211                             "" => default_provers_param_value ctxt

   212                           | s => s]),

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

   214                            [if timeout <= 0 then "none"

   215                             else string_of_int timeout]

   216                          end)]

   217   end

   219 val infinity_time_in_secs = 60 * 60 * 24 * 365

   220 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   222 fun extract_params mode default_params override_params =

   223   let

   224     val override_params = map unalias_raw_param override_params

   225     val raw_params = rev override_params @ rev default_params

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

   227     val lookup_string = the_default "" o lookup

   228     fun general_lookup_bool option default_value name =

   229       case lookup name of

   230         SOME s => parse_bool_option option name s

   231       | NONE => default_value

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

   233     fun lookup_time name =

   234       case lookup name of

   235         SOME s => parse_time_option name s

   236       | NONE => NONE

   237     fun lookup_int name =

   238       case lookup name of

   239         NONE => 0

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

   241                     SOME n => n

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

   243                                    " must be assigned an integer value.")

   244     fun lookup_real_pair name =

   245       case lookup name of

   246         NONE => (0.0, 0.0)

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

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

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

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

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

   252     fun lookup_option lookup' name =

   253       case lookup name of

   254         SOME "smart" => NONE

   255       | _ => SOME (lookup' name)

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

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

   258     val overlord = lookup_bool "overlord"

   259     val blocking =

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

   261       lookup_bool "blocking"

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

   263                   |> mode = Auto_Try ? single o hd

   264     val type_sys =

   265       if mode = Auto_Try then

   266         NONE

   267       else case lookup_string "type_sys" of

   268         "smart" => NONE

   269       | s => SOME (type_sys_from_string s)

   270     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   271     val max_relevant = lookup_option lookup_int "max_relevant"

   272     val max_mono_iters = lookup_int "max_mono_iters"

   273     val max_new_mono_instances = lookup_int "max_new_mono_instances"

   274     val isar_proof = lookup_bool "isar_proof"

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

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

   277     val timeout =

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

   279     val preplay_timeout =

   280       if mode = Auto_Try then Time.zeroTime

   281       else lookup_time "preplay_timeout" |> the_timeout

   282     val expect = lookup_string "expect"

   283   in

   284     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   285      provers = provers, relevance_thresholds = relevance_thresholds,

   286      max_relevant = max_relevant, max_mono_iters = max_mono_iters,

   287      max_new_mono_instances = max_new_mono_instances, type_sys = type_sys,

   288      isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,

   289      slicing = slicing, timeout = timeout, preplay_timeout = preplay_timeout,

   290      expect = expect}

   291   end

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

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

   296 (* Sledgehammer the given subgoal *)

   298 val default_minimize_prover = Metis_Tactics.metisN

   300 val is_raw_param_relevant_for_minimize =

   301   member (op =) params_for_minimize o fst o unalias_raw_param

   302 fun string_for_raw_param (key, values) =

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

   305 fun minimize_command override_params i prover_name fact_names =

   306   let

   307     val params =

   308       override_params

   309       |> filter is_raw_param_relevant_for_minimize

   310       |> map string_for_raw_param

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

   312       |> space_implode ", "

   313   in

   314     sledgehammerN ^ " " ^ minN ^

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

   316     " (" ^ space_implode " " fact_names ^ ")" ^

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

   318   end

   320 fun hammer_away override_params subcommand opt_i relevance_override state =

   321   let

   322     val ctxt = Proof.context_of state

   323     val override_params =

   324       override_params |> map (check_and_repair_raw_param ctxt)

   325   in

   326     if subcommand = runN then

   327       let val i = the_default 1 opt_i in

   328         run_sledgehammer (get_params Normal ctxt override_params) Normal i

   329                          relevance_override (minimize_command override_params i)

   330                          state

   331         |> K ()

   332       end

   333     else if subcommand = minN then

   334       run_minimize (get_params Minimize ctxt

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

   336                                 override_params))

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

   338     else if subcommand = messagesN then

   339       messages opt_i

   340     else if subcommand = supported_proversN then

   341       supported_provers ctxt

   342     else if subcommand = running_proversN then

   343       running_provers ()

   344     else if subcommand = kill_proversN then

   345       kill_provers ()

   346     else if subcommand = refresh_tptpN then

   347       refresh_systems_on_tptp ()

   348     else

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

   350   end

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

   353   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   354                  o Toplevel.proof_of)

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

   358 fun sledgehammer_params_trans params =

   359   Toplevel.theory

   360       (fold set_default_raw_param params

   361        #> tap (fn thy =>

   362                   let val ctxt = Proof_Context.init_global thy in

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

   364                              (case default_raw_params ctxt |> rev of

   365                                 [] => "none"

   366                               | params =>

   367                                 params |> map (check_and_repair_raw_param ctxt)

   368                                        |> map string_for_raw_param

   369                                        |> sort_strings |> cat_lines))

   370                   end))

   372 val parse_key =

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

   374   >> implode_param

   375 val parse_value =

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

   377                 || Parse.$$$ "!")

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

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

   380 val parse_fact_refs =

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

   382 val parse_relevance_chunk =

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

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

   385   || (parse_fact_refs >> only_relevance_override)

   386 val parse_relevance_override =

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

   388                               >> merge_relevance_overrides))

   389                 no_relevance_override

   390 val parse_sledgehammer_command =

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

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

   393 val parse_sledgehammer_params_command =

   394   parse_params #>> sledgehammer_params_trans

   396 val _ =

   397   Outer_Syntax.improper_command sledgehammerN

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

   399       parse_sledgehammer_command

   400 val _ =

   401   Outer_Syntax.command sledgehammer_paramsN

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

   403       parse_sledgehammer_params_command

   405 fun try_sledgehammer auto state =

   406   let

   407     val ctxt = Proof.context_of state

   408     val mode = if auto then Auto_Try else Try

   409     val i = 1

   410   in

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

   412                      (minimize_command [] i) state

   413   end

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

   417 end;

author	blanchet
	Mon, 27 Jun 2011 13:52:47 +0200
changeset 44431	b342cd125533
parent 44219	6c008d3efb0a
child 44434	ae612a423dad
permissions	-rw-r--r--