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 ATP_Translate

    25 open Sledgehammer_Util

    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    ("isar_proof", "false"),

   100    ("isar_shrink_factor", "1"),

   101    ("slicing", "true"),

   102    ("preplay_timeout", "4")]

   104 val alias_params =

   105   [("prover", "provers"),

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

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

   108 val negated_alias_params =

   109   [("no_debug", "debug"),

   110    ("quiet", "verbose"),

   111    ("no_overlord", "overlord"),

   112    ("non_blocking", "blocking"),

   113    ("partial_types", "full_types"),

   114    ("no_isar_proof", "isar_proof"),

   115    ("no_slicing", "slicing")]

   117 val params_for_minimize =

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

   119    "max_new_mono_instances", "isar_proof", "isar_shrink_factor", "timeout",

   120    "preplay_timeout"]

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

   124 fun is_known_raw_param s =

   125   AList.defined (op =) default_default_params s orelse

   126   AList.defined (op =) alias_params s orelse

   127   AList.defined (op =) negated_alias_params s orelse

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

   130 fun is_prover_list ctxt s =

   131   case space_explode " " s of

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

   133   | _ => false

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

   136 fun check_and_repair_raw_param ctxt (name, value) =

   137   if is_known_raw_param name then

   138     (name, value)

   139   else if is_prover_list ctxt name andalso null value then

   140     ("provers", [name])

   141   else if can type_sys_from_string name andalso null value then

   142     ("type_sys", [name])

   143   else

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

   146 fun unalias_raw_param (name, value) =

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

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

   149   | NONE =>

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

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

   152                               ["false"] => ["true"]

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

   154                             | [] => ["false"]

   155                             | _ => value)

   156     | NONE => (name, value)

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

   159    correctly. *)

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

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

   162   | implode_param ss = space_implode " " ss

   164 structure Data = Theory_Data

   165 (

   166   type T = raw_param list

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

   168   val extend = I

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

   170 )

   172 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   173   if String.isPrefix remote_prefix name then

   174     SOME name

   175   else

   176     let val remote_name = remote_prefix ^ name in

   177       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   178     end

   180 fun remotify_prover_if_not_installed ctxt name =

   181   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   182     SOME name

   183   else

   184     remotify_prover_if_supported_and_not_already_remote ctxt name

   186 fun avoid_too_many_threads _ _ [] = []

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

   188   | avoid_too_many_threads ctxt (0, max_remote) provers =

   189     provers

   190     |> map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   191     |> take max_remote

   192   | avoid_too_many_threads _ (max_local, 0) provers =

   193     provers

   194     |> filter_out (String.isPrefix remote_prefix)

   195     |> take max_local

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

   197     let

   198       val max_local_and_remote =

   199         max_local_and_remote

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

   201               (Integer.add ~1)

   202     in prover :: avoid_too_many_threads ctxt max_local_and_remote provers end

   204 val max_default_remote_threads = 4

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

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

   208 fun default_provers_param_value ctxt =

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

   210   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   212                                   max_default_remote_threads)

   213   |> implode_param

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

   216 fun default_raw_params ctxt =

   217   let val thy = Proof_Context.theory_of ctxt in

   218     Data.get thy

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

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

   221                             "" => default_provers_param_value ctxt

   222                           | s => s]),

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

   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 override_params = map unalias_raw_param override_params

   236     val raw_params = rev override_params @ rev default_params

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

   238     val lookup_string = the_default "" o lookup

   239     fun general_lookup_bool option default_value name =

   240       case lookup name of

   241         SOME s => parse_bool_option option name s

   242       | NONE => default_value

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

   244     fun lookup_time name =

   245       case lookup name of

   246         SOME s => parse_time_option name s

   247       | NONE => NONE

   248     fun lookup_int name =

   249       case lookup name of

   250         NONE => 0

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

   252                     SOME n => n

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

   254                                    " must be assigned an integer value.")

   255     fun lookup_real_pair name =

   256       case lookup name of

   257         NONE => (0.0, 0.0)

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

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

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

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

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

   263     fun lookup_option lookup' name =

   264       case lookup name of

   265         SOME "smart" => NONE

   266       | _ => SOME (lookup' name)

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

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

   269     val overlord = lookup_bool "overlord"

   270     val blocking =

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

   272       lookup_bool "blocking"

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

   274                   |> mode = Auto_Try ? single o hd

   275     val type_sys =

   276       if mode = Auto_Try then

   277         Smart_Type_Sys true

   278       else case lookup_string "type_sys" of

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

   280       | s => Dumb_Type_Sys (type_sys_from_string s)

   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_sys = type_sys,

   299      isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,

   300      slicing = slicing, timeout = timeout, preplay_timeout = preplay_timeout,

   301      expect = expect}

   302   end

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

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

   307 (* Sledgehammer the given subgoal *)

   309 val default_minimize_prover = Metis_Tactics.metisN

   311 val is_raw_param_relevant_for_minimize =

   312   member (op =) params_for_minimize o fst o unalias_raw_param

   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 =

   335       override_params |> map (check_and_repair_raw_param ctxt)

   336   in

   337     if subcommand = runN then

   338       let val i = the_default 1 opt_i in

   339         run_sledgehammer (get_params Normal ctxt override_params) Normal i

   340                          relevance_override (minimize_command override_params i)

   341                          state

   342         |> K ()

   343       end

   344     else if subcommand = minN then

   345       run_minimize (get_params Minimize ctxt

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

   347                                 override_params))

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

   349     else if subcommand = messagesN then

   350       messages opt_i

   351     else if subcommand = supported_proversN then

   352       supported_provers ctxt

   353     else if subcommand = running_proversN then

   354       running_provers ()

   355     else if subcommand = kill_proversN then

   356       kill_provers ()

   357     else if subcommand = refresh_tptpN then

   358       refresh_systems_on_tptp ()

   359     else

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

   361   end

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

   364   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   365                  o Toplevel.proof_of)

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

   369 fun sledgehammer_params_trans params =

   370   Toplevel.theory

   371       (fold set_default_raw_param params

   372        #> tap (fn thy =>

   373                   let val ctxt = Proof_Context.init_global thy in

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

   375                              (case default_raw_params ctxt |> rev of

   376                                 [] => "none"

   377                               | params =>

   378                                 params |> map (check_and_repair_raw_param ctxt)

   379                                        |> map string_for_raw_param

   380                                        |> sort_strings |> cat_lines))

   381                   end))

   383 val parse_key =

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

   385   >> implode_param

   386 val parse_value =

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

   388                 || Parse.$$$ "!")

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

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

   391 val parse_fact_refs =

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

   393 val parse_relevance_chunk =

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

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

   396   || (parse_fact_refs >> only_relevance_override)

   397 val parse_relevance_override =

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

   399                               >> merge_relevance_overrides))

   400                 no_relevance_override

   401 val parse_sledgehammer_command =

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

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

   404 val parse_sledgehammer_params_command =

   405   parse_params #>> sledgehammer_params_trans

   407 val _ =

   408   Outer_Syntax.improper_command sledgehammerN

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

   410       parse_sledgehammer_command

   411 val _ =

   412   Outer_Syntax.command sledgehammer_paramsN

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

   414       parse_sledgehammer_params_command

   416 fun try_sledgehammer auto state =

   417   let

   418     val ctxt = Proof.context_of state

   419     val mode = if auto then Auto_Try else Try

   420     val i = 1

   421   in

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

   423                      (minimize_command [] i) state

   424   end

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

   428 end;

author	blanchet
	Wed, 08 Jun 2011 08:47:43 +0200
changeset 44100	30c141dc22d6
parent 43941	49347c6354b5
child 44218	597f31069e18
permissions	-rw-r--r--