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.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

    25 open Sledgehammer_Minimize

    27 val auto = Unsynchronized.ref false

    29 val _ =

    30   ProofGeneralPgip.add_preference Preferences.category_tracing

    31       (Preferences.bool_pref auto "auto-sledgehammer"

    32            "Run Sledgehammer automatically.")

    34 (** Sledgehammer commands **)

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

    37 fun add_relevance_override ns : relevance_override =

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

    39 fun del_relevance_override ns : relevance_override =

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

    41 fun only_relevance_override ns : relevance_override =

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

    43 fun merge_relevance_override_pairwise (r1 : relevance_override)

    44                                       (r2 : relevance_override) =

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

    46    only = #only r1 andalso #only r2}

    47 fun merge_relevance_overrides rs =

    48   fold merge_relevance_override_pairwise rs (only_relevance_override [])

    50 (*** parameters ***)

    52 val provers = Unsynchronized.ref ""

    53 val timeout = Unsynchronized.ref 30

    54 val full_types = Unsynchronized.ref false

    56 val _ =

    57   ProofGeneralPgip.add_preference Preferences.category_proof

    58       (Preferences.string_pref provers

    59           "Sledgehammer: Provers"

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

    62 val _ =

    63   ProofGeneralPgip.add_preference Preferences.category_proof

    64       (Preferences.int_pref timeout

    65           "Sledgehammer: Time Limit"

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

    68 val _ =

    69   ProofGeneralPgip.add_preference Preferences.category_proof

    70       (Preferences.bool_pref full_types

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

    73 type raw_param = string * string list

    75 val default_default_params =

    76   [("blocking", "false"),

    77    ("debug", "false"),

    78    ("verbose", "false"),

    79    ("overlord", "false"),

    80    ("explicit_apply", "false"),

    81    ("relevance_thresholds", "45 85"),

    82    ("max_relevant", "smart"),

    83    ("isar_proof", "false"),

    84    ("isar_shrink_factor", "1")]

    86 val alias_params =

    87   [("prover", "provers"),

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

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

    90 val negated_alias_params =

    91   [("non_blocking", "blocking"),

    92    ("no_debug", "debug"),

    93    ("quiet", "verbose"),

    94    ("no_overlord", "overlord"),

    95    ("partial_types", "full_types"),

    96    ("implicit_apply", "explicit_apply"),

    97    ("no_isar_proof", "isar_proof")]

    99 val params_for_minimize =

   100   ["debug", "verbose", "overlord", "full_types", "isar_proof",

   101    "isar_shrink_factor", "timeout"]

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

   105 fun is_known_raw_param s =

   106   AList.defined (op =) default_default_params s orelse

   107   AList.defined (op =) alias_params s orelse

   108   AList.defined (op =) negated_alias_params s orelse

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

   111 fun check_raw_param (s, _) =

   112   if is_known_raw_param s then ()

   113   else error ("Unknown parameter: " ^ quote s ^ ".")

   115 fun unalias_raw_param (name, value) =

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

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

   118   | NONE =>

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

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

   121                               ["false"] => ["true"]

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

   123                             | [] => ["false"]

   124                             | _ => value)

   125     | NONE => (name, value)

   127 structure Data = Theory_Data(

   128   type T = raw_param list

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

   130   val extend = I

   131   fun merge p : T = AList.merge (op =) (K true) p)

   133 (* FIXME: dummy *)

   134 fun is_smt_solver_installed ctxt = true

   136 fun remotify_prover_if_available_and_not_already_remote thy name =

   137   if String.isPrefix remote_prefix name then

   138     SOME name

   139   else

   140     let val remote_name = remote_prefix ^ name in

   141       if is_prover_available thy remote_name then SOME remote_name else NONE

   142     end

   144 fun remotify_prover_if_not_installed ctxt name =

   145   let val thy = ProofContext.theory_of ctxt in

   146     if is_prover_available thy name andalso is_prover_installed ctxt name then

   147       SOME name

   148     else

   149       remotify_prover_if_available_and_not_already_remote thy name

   150   end

   152 fun avoid_too_many_local_threads _ _ [] = []

   153   | avoid_too_many_local_threads thy 0 provers =

   154     map_filter (remotify_prover_if_available_and_not_already_remote thy) provers

   155   | avoid_too_many_local_threads thy n (prover :: provers) =

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

   157       prover :: avoid_too_many_local_threads thy n provers

   158     end

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

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

   162 fun default_provers_param_value ctxt =

   163   let val thy = ProofContext.theory_of ctxt in

   164     [spassN, eN, vampireN, sine_eN (* FIXME: , smtN *)]

   165     |> map_filter (remotify_prover_if_not_installed ctxt)

   166     |> avoid_too_many_local_threads thy (Thread.numProcessors ())

   167     |> space_implode " "

   168   end

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

   171 fun default_raw_params ctxt =

   172   let val thy = ProofContext.theory_of ctxt in

   173     Data.get thy

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

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

   176                             "" => default_provers_param_value ctxt

   177                           | s => s]),

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

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

   180                            [if timeout <= 0 then "none"

   181                             else string_of_int timeout ^ " s"]

   182                          end)]

   183   end

   185 val infinity_time_in_secs = 60 * 60 * 24 * 365

   186 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   188 fun extract_params auto default_params override_params =

   189   let

   190     val override_params = map unalias_raw_param override_params

   191     val raw_params = rev override_params @ rev default_params

   192     val lookup = Option.map (space_implode " ") o AList.lookup (op =) raw_params

   193     val lookup_string = the_default "" o lookup

   194     fun general_lookup_bool option default_value name =

   195       case lookup name of

   196         SOME s => parse_bool_option option name s

   197       | NONE => default_value

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

   199     fun lookup_time name =

   200       case lookup name of

   201         SOME s => parse_time_option name s

   202       | NONE => NONE

   203     fun lookup_int name =

   204       case lookup name of

   205         NONE => 0

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

   207                     SOME n => n

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

   209                                    " must be assigned an integer value.")

   210     fun lookup_int_pair name =

   211       case lookup name of

   212         NONE => (0, 0)

   213       | SOME s => case s |> space_explode " " |> map Int.fromString of

   214                     [SOME n1, SOME n2] => (n1, n2)

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

   216                                 "must be assigned a pair of integer values \

   217                                 \(e.g., \"60 95\")")

   218     fun lookup_int_option name =

   219       case lookup name of

   220         SOME "smart" => NONE

   221       | _ => SOME (lookup_int name)

   222     val blocking = auto orelse lookup_bool "blocking"

   223     val debug = not auto andalso lookup_bool "debug"

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

   225     val overlord = lookup_bool "overlord"

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

   227                   |> auto ? single o hd

   228     val full_types = lookup_bool "full_types"

   229     val explicit_apply = lookup_bool "explicit_apply"

   230     val relevance_thresholds =

   231       lookup_int_pair "relevance_thresholds"

   232       |> pairself (fn n => 0.01 * Real.fromInt n)

   233     val max_relevant = lookup_int_option "max_relevant"

   234     val isar_proof = lookup_bool "isar_proof"

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

   236     val timeout = (if auto then NONE else lookup_time "timeout") |> the_timeout

   237     val expect = lookup_string "expect"

   238   in

   239     {blocking = blocking, debug = debug, verbose = verbose, overlord = overlord,

   240      provers = provers, full_types = full_types,

   241      explicit_apply = explicit_apply,

   242      relevance_thresholds = relevance_thresholds, max_relevant = max_relevant,

   243      isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,

   244      timeout = timeout, expect = expect}

   245   end

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

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

   250 (* Sledgehammer the given subgoal *)

   252 val sledgehammerN = "sledgehammer"

   253 val sledgehammer_paramsN = "sledgehammer_params"

   255 val runN = "run"

   256 val minimizeN = "minimize"

   257 val messagesN = "messages"

   258 val available_proversN = "available_provers"

   259 val running_proversN = "running_provers"

   260 val kill_proversN = "kill_provers"

   261 val refresh_tptpN = "refresh_tptp"

   263 val is_raw_param_relevant_for_minimize =

   264   member (op =) params_for_minimize o fst o unalias_raw_param

   265 fun string_for_raw_param (key, values) =

   266   key ^ (case space_implode " " values of "" => "" | value => " = " ^ value)

   268 fun minimize_command override_params i prover_name fact_names =

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

   270   (override_params |> filter is_raw_param_relevant_for_minimize

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

   272   "] (" ^ space_implode " " fact_names ^ ")" ^

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

   275 fun hammer_away override_params subcommand opt_i relevance_override state =

   276   let

   277     val ctxt = Proof.context_of state

   278     val thy = Proof.theory_of state

   279     val _ = app check_raw_param override_params

   280   in

   281     if subcommand = runN then

   282       let val i = the_default 1 opt_i in

   283         run_sledgehammer (get_params false ctxt override_params) false i

   284                          relevance_override (minimize_command override_params i)

   285                          state

   286         |> K ()

   287       end

   288     else if subcommand = minimizeN then

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

   290                    (#add relevance_override) state

   291     else if subcommand = messagesN then

   292       messages opt_i

   293     else if subcommand = available_proversN then

   294       available_provers thy

   295     else if subcommand = running_proversN then

   296       running_provers ()

   297     else if subcommand = kill_proversN then

   298       kill_provers ()

   299     else if subcommand = refresh_tptpN then

   300       refresh_systems_on_tptp ()

   301     else

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

   303   end

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

   306   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   307                  o Toplevel.proof_of)

   309 fun string_for_raw_param (name, value) = name ^ " = " ^ space_implode " " value

   311 fun sledgehammer_params_trans params =

   312   Toplevel.theory

   313       (fold set_default_raw_param params

   314        #> tap (fn thy =>

   315                   let val ctxt = ProofContext.init_global thy in

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

   317                              (case default_raw_params ctxt |> rev of

   318                                 [] => "none"

   319                               | params =>

   320                                 (map check_raw_param params;

   321                                  params |> map string_for_raw_param

   322                                         |> sort_strings |> cat_lines)))

   323                   end))

   325 val parse_key = Scan.repeat1 Parse.typ_group >> space_implode " "

   326 val parse_value = Scan.repeat1 Parse.xname

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

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

   329 val parse_fact_refs =

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

   331 val parse_relevance_chunk =

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

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

   334   || (parse_fact_refs >> only_relevance_override)

   335 val parse_relevance_override =

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

   337                               >> merge_relevance_overrides))

   338                 no_relevance_override

   339 val parse_sledgehammer_command =

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

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

   342 val parse_sledgehammer_params_command =

   343   parse_params #>> sledgehammer_params_trans

   345 val _ =

   346   Outer_Syntax.improper_command sledgehammerN

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

   348       parse_sledgehammer_command

   349 val _ =

   350   Outer_Syntax.command sledgehammer_paramsN

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

   352       parse_sledgehammer_params_command

   354 fun auto_sledgehammer state =

   355   if not (!auto) then

   356     (false, state)

   357   else

   358     let val ctxt = Proof.context_of state in

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

   360                        (minimize_command [] 1) state

   361     end

   363 val setup = Auto_Tools.register_tool ("sledgehammer", auto_sledgehammer)

   365 end;

author	blanchet
	Fri, 22 Oct 2010 16:11:43 +0200
changeset 40253	27f2a45b0aab
parent 40250	6f7bf79b1506
child 40359	e5ed638e49b0
permissions	-rw-r--r--