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_Util

    23 open ATP_Systems

    24 open ATP_Translate

    25 open ATP_Reconstruct

    26 open Sledgehammer_Util

    27 open Sledgehammer_Filter

    28 open Sledgehammer_Provers

    29 open Sledgehammer_Minimize

    30 open Sledgehammer_Run

    32 val sledgehammerN = "sledgehammer"

    33 val sledgehammer_paramsN = "sledgehammer_params"

    35 val runN = "run"

    36 val minN = "min"

    37 val messagesN = "messages"

    38 val supported_proversN = "supported_provers"

    39 val running_proversN = "running_provers"

    40 val kill_proversN = "kill_provers"

    41 val refresh_tptpN = "refresh_tptp"

    43 val auto = Unsynchronized.ref false

    45 val _ =

    46   ProofGeneralPgip.add_preference Preferences.category_tracing

    47       (Preferences.bool_pref auto "auto-sledgehammer"

    48            "Run Sledgehammer automatically.")

    50 (** Sledgehammer commands **)

    52 fun add_relevance_override ns : relevance_override =

    53   {add = ns, del = [], only = false}

    54 fun del_relevance_override ns : relevance_override =

    55   {add = [], del = ns, only = false}

    56 fun only_relevance_override ns : relevance_override =

    57   {add = ns, del = [], only = true}

    58 fun merge_relevance_override_pairwise (r1 : relevance_override)

    59                                       (r2 : relevance_override) =

    60   {add = #add r1 @ #add r2, del = #del r1 @ #del r2,

    61    only = #only r1 andalso #only r2}

    62 fun merge_relevance_overrides rs =

    63   fold merge_relevance_override_pairwise rs (only_relevance_override [])

    65 (*** parameters ***)

    67 val provers = Unsynchronized.ref ""

    68 val timeout = Unsynchronized.ref 30

    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 type raw_param = string * string list

    84 val default_default_params =

    85   [("debug", "false"),

    86    ("verbose", "false"),

    87    ("overlord", "false"),

    88    ("blocking", "false"),

    89    ("type_enc", "smart"),

    90    ("sound", "false"),

    91    ("lam_trans", "smart"),

    92    ("relevance_thresholds", "0.45 0.85"),

    93    ("max_relevant", "smart"),

    94    ("max_mono_iters", "3"),

    95    ("max_new_mono_instances", "200"),

    96    ("isar_proof", "false"),

    97    ("isar_shrink_factor", "1"),

    98    ("slice", "true"),

    99    ("preplay_timeout", "4")]

   101 val alias_params =

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

   103 val negated_alias_params =

   104   [("no_debug", "debug"),

   105    ("quiet", "verbose"),

   106    ("no_overlord", "overlord"),

   107    ("non_blocking", "blocking"),

   108    ("unsound", "sound"),

   109    ("no_isar_proof", "isar_proof"),

   110    ("dont_slice", "slice")]

   112 val params_for_minimize =

   113   ["debug", "verbose", "overlord", "type_enc", "sound", "lam_trans",

   114    "max_mono_iters", "max_new_mono_instances", "isar_proof",

   115    "isar_shrink_factor", "timeout", "preplay_timeout"]

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

   119 fun is_known_raw_param s =

   120   AList.defined (op =) default_default_params s orelse

   121   AList.defined (op =) alias_params s orelse

   122   AList.defined (op =) negated_alias_params s orelse

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

   125 fun is_prover_list ctxt s =

   126   case space_explode " " s of

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

   128   | _ => false

   130 fun unalias_raw_param (name, value) =

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

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

   133   | NONE =>

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

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

   136                               ["false"] => ["true"]

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

   138                             | [] => ["false"]

   139                             | _ => value)

   140     | NONE => (name, value)

   142 val any_type_enc = type_enc_from_string Sound "erased"

   144 (* "provers =", "type_enc =", and "lam_trans" can be omitted. For the last two,

   145    this is a secret feature. *)

   146 fun normalize_raw_param ctxt =

   147   unalias_raw_param

   148   #> (fn (name, value) =>

   149          if is_known_raw_param name then

   150            (name, value)

   151          else if is_prover_list ctxt name andalso null value then

   152            ("provers", [name])

   153          else if can (type_enc_from_string Sound) name andalso null value then

   154            ("type_enc", [name])

   155          else if can (trans_lams_from_string ctxt any_type_enc) name andalso

   156                  null value then

   157            ("lam_trans", [name])

   158          else

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

   162 (* Ensures that type encodings such as "mono_simple?" and "poly_guards!!" are

   163    read correctly. *)

   164 val implode_param = strip_spaces_except_between_idents o space_implode " "

   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, e_sineN, 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 fun set_default_raw_param param thy =

   218   let val ctxt = Proof_Context.init_global thy in

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

   220   end

   221 fun default_raw_params ctxt =

   222   let val thy = Proof_Context.theory_of ctxt in

   223     Data.get thy

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

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

   226                             "" => default_provers_param_value ctxt

   227                           | s => s]),

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

   229                            [if timeout <= 0 then "none"

   230                             else string_of_int timeout]

   231                          end)]

   232   end

   234 val infinity_time_in_secs = 60 * 60 * 24 * 365

   235 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   237 fun extract_params mode default_params override_params =

   238   let

   239     val raw_params = rev override_params @ rev default_params

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

   241     val lookup_string = the_default "" o lookup

   242     fun general_lookup_bool option default_value name =

   243       case lookup name of

   244         SOME s => parse_bool_option option name s

   245       | NONE => default_value

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

   247     fun lookup_time name =

   248       case lookup name of

   249         SOME s => parse_time_option name s

   250       | NONE => NONE

   251     fun lookup_int name =

   252       case lookup name of

   253         NONE => 0

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

   255                     SOME n => n

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

   257                                    " must be assigned an integer value.")

   258     fun lookup_real_pair name =

   259       case lookup name of

   260         NONE => (0.0, 0.0)

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

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

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

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

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

   266     fun lookup_option lookup' name =

   267       case lookup name of

   268         SOME "smart" => NONE

   269       | _ => SOME (lookup' name)

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

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

   272     val overlord = lookup_bool "overlord"

   273     val blocking =

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

   275       lookup_bool "blocking"

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

   277                   |> mode = Auto_Try ? single o hd

   278     val type_enc =

   279       if mode = Auto_Try then

   280         NONE

   281       else case lookup_string "type_enc" of

   282         "smart" => NONE

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

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

   285     val lam_trans = lookup_option lookup_string "lam_trans"

   286     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   287     val max_relevant = lookup_option lookup_int "max_relevant"

   288     val max_mono_iters = lookup_int "max_mono_iters"

   289     val max_new_mono_instances = lookup_int "max_new_mono_instances"

   290     val isar_proof = lookup_bool "isar_proof"

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

   292     val slice = mode <> Auto_Try andalso lookup_bool "slice"

   293     val timeout =

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

   295     val preplay_timeout =

   296       if mode = Auto_Try then Time.zeroTime

   297       else lookup_time "preplay_timeout" |> the_timeout

   298     val expect = lookup_string "expect"

   299   in

   300     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   301      provers = provers, type_enc = type_enc, sound = sound,

   302      lam_trans = lam_trans, relevance_thresholds = relevance_thresholds,

   303      max_relevant = max_relevant, max_mono_iters = max_mono_iters,

   304      max_new_mono_instances = max_new_mono_instances,  isar_proof = isar_proof,

   305      isar_shrink_factor = isar_shrink_factor, slice = slice, timeout = timeout,

   306      preplay_timeout = preplay_timeout, expect = expect}

   307   end

   309 fun get_params mode = extract_params mode o default_raw_params

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

   312 (* Sledgehammer the given subgoal *)

   314 val default_minimize_prover = metisN

   316 fun is_raw_param_relevant_for_minimize (name, _) =

   317   member (op =) params_for_minimize name

   318 fun string_for_raw_param (key, values) =

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

   321 fun minimize_command override_params i more_override_params prover_name

   322                      fact_names =

   323   let

   324     val params =

   325       (override_params

   326        |> filter_out (AList.defined (op =) more_override_params o fst)) @

   327       more_override_params

   328       |> filter is_raw_param_relevant_for_minimize

   329       |> map string_for_raw_param

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

   331       |> space_implode ", "

   332   in

   333     sledgehammerN ^ " " ^ minN ^

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

   335     " (" ^ space_implode " " fact_names ^ ")" ^

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

   337   end

   339 fun hammer_away override_params subcommand opt_i relevance_override state =

   340   let

   341     val ctxt = Proof.context_of state

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

   343   in

   344     if subcommand = runN then

   345       let val i = the_default 1 opt_i in

   346         run_sledgehammer (get_params Normal ctxt override_params) Normal i

   347                          relevance_override (minimize_command override_params i)

   348                          state

   349         |> K ()

   350       end

   351     else if subcommand = minN then

   352       run_minimize (get_params Minimize ctxt

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

   354                                 override_params))

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

   356     else if subcommand = messagesN then

   357       messages opt_i

   358     else if subcommand = supported_proversN then

   359       supported_provers ctxt

   360     else if subcommand = running_proversN then

   361       running_provers ()

   362     else if subcommand = kill_proversN then

   363       kill_provers ()

   364     else if subcommand = refresh_tptpN then

   365       refresh_systems_on_tptp ()

   366     else

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

   368   end

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

   371   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   372                  o Toplevel.proof_of)

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

   376 fun sledgehammer_params_trans params =

   377   Toplevel.theory

   378       (fold set_default_raw_param params

   379        #> tap (fn thy =>

   380                   let val ctxt = Proof_Context.init_global thy in

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

   382                              (case default_raw_params ctxt |> rev of

   383                                 [] => "none"

   384                               | params =>

   385                                 params |> map string_for_raw_param

   386                                        |> sort_strings |> cat_lines))

   387                   end))

   389 val parse_query_bang = Parse.$$$ "?" || Parse.$$$ "!" || Parse.$$$ "!!"

   390 val parse_key =

   391   Scan.repeat1 (Parse.typ_group || parse_query_bang) >> implode_param

   392 val parse_value =

   393   Scan.repeat1 (Parse.xname || Parse.float_number || parse_query_bang)

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

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

   396 val parse_fact_refs =

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

   398 val parse_relevance_chunk =

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

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

   401   || (parse_fact_refs >> only_relevance_override)

   402 val parse_relevance_override =

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

   404                               >> merge_relevance_overrides))

   405                 no_relevance_override

   406 val parse_sledgehammer_command =

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

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

   409 val parse_sledgehammer_params_command =

   410   parse_params #>> sledgehammer_params_trans

   412 val _ =

   413   Outer_Syntax.improper_command sledgehammerN

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

   415       parse_sledgehammer_command

   416 val _ =

   417   Outer_Syntax.command sledgehammer_paramsN

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

   419       parse_sledgehammer_params_command

   421 fun try_sledgehammer auto state =

   422   let

   423     val ctxt = Proof.context_of state

   424     val mode = if auto then Auto_Try else Try

   425     val i = 1

   426   in

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

   428                      (minimize_command [] i) state

   429   end

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

   433 end;

author	blanchet
	Thu, 01 Dec 2011 13:34:13 +0100
changeset 46577	418846ea4f99
parent 46391	2b1dde0b1c30
child 46578	6bf7eec9b153
permissions	-rw-r--r--