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_Provers

    25 open Sledgehammer_Minimize

    26 open Sledgehammer_Run

    28 val auto = Unsynchronized.ref false

    30 val _ =

    31   ProofGeneralPgip.add_preference Preferences.category_tracing

    32       (Preferences.bool_pref auto "auto-sledgehammer"

    33            "Run Sledgehammer automatically.")

    35 (** Sledgehammer commands **)

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

    38 fun add_relevance_override ns : relevance_override =

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

    40 fun del_relevance_override ns : relevance_override =

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

    42 fun only_relevance_override ns : relevance_override =

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

    44 fun merge_relevance_override_pairwise (r1 : relevance_override)

    45                                       (r2 : relevance_override) =

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

    47    only = #only r1 andalso #only r2}

    48 fun merge_relevance_overrides rs =

    49   fold merge_relevance_override_pairwise rs (only_relevance_override [])

    51 (*** parameters ***)

    53 val provers = Unsynchronized.ref ""

    54 val timeout = Unsynchronized.ref 30

    55 val full_types = Unsynchronized.ref false

    57 val _ =

    58   ProofGeneralPgip.add_preference Preferences.category_proof

    59       (Preferences.string_pref provers

    60           "Sledgehammer: Provers"

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

    63 val _ =

    64   ProofGeneralPgip.add_preference Preferences.category_proof

    65       (Preferences.int_pref timeout

    66           "Sledgehammer: Time Limit"

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

    69 val _ =

    70   ProofGeneralPgip.add_preference Preferences.category_proof

    71       (Preferences.bool_pref full_types

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

    74 type raw_param = string * string list

    76 val default_default_params =

    77   [("blocking", "false"),

    78    ("debug", "false"),

    79    ("verbose", "false"),

    80    ("overlord", "false"),

    81    ("type_sys", "smart"),

    82    ("explicit_apply", "false"),

    83    ("relevance_thresholds", "0.45 0.85"),

    84    ("max_relevant", "smart"),

    85    ("isar_proof", "false"),

    86    ("isar_shrink_factor", "1")]

    88 val alias_params =

    89   [("prover", "provers"),

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

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

    92 val negated_alias_params =

    93   [("non_blocking", "blocking"),

    94    ("no_debug", "debug"),

    95    ("quiet", "verbose"),

    96    ("no_overlord", "overlord"),

    97    ("partial_types", "full_types"),

    98    ("implicit_apply", "explicit_apply"),

    99    ("no_isar_proof", "isar_proof")]

   101 val params_for_minimize =

   102   ["debug", "verbose", "overlord", "full_types", "type_sys", "isar_proof",

   103    "isar_shrink_factor", "timeout"]

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

   107 fun is_known_raw_param s =

   108   AList.defined (op =) default_default_params s orelse

   109   AList.defined (op =) alias_params s orelse

   110   AList.defined (op =) negated_alias_params s orelse

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

   113 fun check_raw_param (s, _) =

   114   if is_known_raw_param s then ()

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

   117 fun unalias_raw_param (name, value) =

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

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

   120   | NONE =>

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

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

   123                               ["false"] => ["true"]

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

   125                             | [] => ["false"]

   126                             | _ => value)

   127     | NONE => (name, value)

   129 structure Data = Theory_Data(

   130   type T = raw_param list

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

   132   val extend = I

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

   135 fun remotify_prover_if_available_and_not_already_remote ctxt name =

   136   if String.isPrefix remote_prefix name then

   137     SOME name

   138   else

   139     let val remote_name = remote_prefix ^ name in

   140       if is_prover_available ctxt remote_name then SOME remote_name else NONE

   141     end

   143 fun remotify_prover_if_not_installed ctxt name =

   144   if is_prover_available ctxt name andalso is_prover_installed ctxt name then

   145     SOME name

   146   else

   147     remotify_prover_if_available_and_not_already_remote ctxt name

   149 fun avoid_too_many_local_threads _ _ [] = []

   150   | avoid_too_many_local_threads ctxt 0 provers =

   151     map_filter (remotify_prover_if_available_and_not_already_remote ctxt)

   152                provers

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

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

   155       prover :: avoid_too_many_local_threads ctxt n provers

   156     end

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

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

   160 fun default_provers_param_value ctxt =

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

   162   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   164   |> space_implode " "

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

   167 fun default_raw_params ctxt =

   168   let val thy = ProofContext.theory_of ctxt in

   169     Data.get thy

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

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

   172                             "" => default_provers_param_value ctxt

   173                           | s => s]),

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

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

   176                            [if timeout <= 0 then "none"

   177                             else string_of_int timeout]

   178                          end)]

   179   end

   181 val infinity_time_in_secs = 60 * 60 * 24 * 365

   182 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   184 fun extract_params auto default_params override_params =

   185   let

   186     val override_params = map unalias_raw_param override_params

   187     val raw_params = rev override_params @ rev default_params

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

   189     val lookup_string = the_default "" o lookup

   190     fun general_lookup_bool option default_value name =

   191       case lookup name of

   192         SOME s => parse_bool_option option name s

   193       | NONE => default_value

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

   195     fun lookup_time name =

   196       case lookup name of

   197         SOME s => parse_time_option name s

   198       | NONE => NONE

   199     fun lookup_int name =

   200       case lookup name of

   201         NONE => 0

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

   203                     SOME n => n

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

   205                                    " must be assigned an integer value.")

   206     fun lookup_real_pair name =

   207       case lookup name of

   208         NONE => (0.0, 0.0)

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

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

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

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

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

   214     fun lookup_int_option name =

   215       case lookup name of

   216         SOME "smart" => NONE

   217       | _ => SOME (lookup_int name)

   218     val blocking = auto orelse lookup_bool "blocking"

   219     val debug = not auto andalso lookup_bool "debug"

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

   221     val overlord = lookup_bool "overlord"

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

   223                   |> auto ? single o hd

   224     val full_types = lookup_bool "full_types"

   225     val type_sys = lookup_string "type_sys"

   226     val explicit_apply = lookup_bool "explicit_apply"

   227     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   228     val max_relevant = lookup_int_option "max_relevant"

   229     val isar_proof = lookup_bool "isar_proof"

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

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

   232     val expect = lookup_string "expect"

   233   in

   234     {blocking = blocking, debug = debug, verbose = verbose, overlord = overlord,

   235      provers = provers, full_types = full_types, type_sys = type_sys,

   236      explicit_apply = explicit_apply,

   237      relevance_thresholds = relevance_thresholds, max_relevant = max_relevant,

   238      isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,

   239      timeout = timeout, expect = expect}

   240   end

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

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

   245 (* Sledgehammer the given subgoal *)

   247 val sledgehammerN = "sledgehammer"

   248 val sledgehammer_paramsN = "sledgehammer_params"

   250 val runN = "run"

   251 val minimizeN = "minimize"

   252 val messagesN = "messages"

   253 val available_proversN = "available_provers"

   254 val running_proversN = "running_provers"

   255 val kill_proversN = "kill_provers"

   256 val refresh_tptpN = "refresh_tptp"

   258 val is_raw_param_relevant_for_minimize =

   259   member (op =) params_for_minimize o fst o unalias_raw_param

   260 fun string_for_raw_param (key, values) =

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

   263 fun minimize_command override_params i prover_name fact_names =

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

   265   (override_params |> filter is_raw_param_relevant_for_minimize

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

   267   "] (" ^ space_implode " " fact_names ^ ")" ^

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

   270 fun hammer_away override_params subcommand opt_i relevance_override state =

   271   let

   272     val ctxt = Proof.context_of state

   273     val _ = app check_raw_param override_params

   274   in

   275     if subcommand = runN then

   276       let val i = the_default 1 opt_i in

   277         run_sledgehammer (get_params false ctxt override_params) false i

   278                          relevance_override (minimize_command override_params i)

   279                          state

   280         |> K ()

   281       end

   282     else if subcommand = minimizeN then

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

   284                    (#add relevance_override) state

   285     else if subcommand = messagesN then

   286       messages opt_i

   287     else if subcommand = available_proversN then

   288       available_provers ctxt

   289     else if subcommand = running_proversN then

   290       running_provers ()

   291     else if subcommand = kill_proversN then

   292       kill_provers ()

   293     else if subcommand = refresh_tptpN then

   294       refresh_systems_on_tptp ()

   295     else

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

   297   end

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

   300   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   301                  o Toplevel.proof_of)

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

   305 fun sledgehammer_params_trans params =

   306   Toplevel.theory

   307       (fold set_default_raw_param params

   308        #> tap (fn thy =>

   309                   let val ctxt = ProofContext.init_global thy in

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

   311                              (case default_raw_params ctxt |> rev of

   312                                 [] => "none"

   313                               | params =>

   314                                 (map check_raw_param params;

   315                                  params |> map string_for_raw_param

   316                                         |> sort_strings |> cat_lines)))

   317                   end))

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

   320 val parse_value = Scan.repeat1 (Parse.xname || Parse.float_number)

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

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

   323 val parse_fact_refs =

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

   325 val parse_relevance_chunk =

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

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

   328   || (parse_fact_refs >> only_relevance_override)

   329 val parse_relevance_override =

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

   331                               >> merge_relevance_overrides))

   332                 no_relevance_override

   333 val parse_sledgehammer_command =

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

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

   336 val parse_sledgehammer_params_command =

   337   parse_params #>> sledgehammer_params_trans

   339 val _ =

   340   Outer_Syntax.improper_command sledgehammerN

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

   342       parse_sledgehammer_command

   343 val _ =

   344   Outer_Syntax.command sledgehammer_paramsN

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

   346       parse_sledgehammer_params_command

   348 fun auto_sledgehammer state =

   349   let val ctxt = Proof.context_of state in

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

   351                      (minimize_command [] 1) state

   352   end

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

   356 end;

author	blanchet
	Wed, 15 Dec 2010 11:26:28 +0100
changeset 41382	de9e0adc21da
parent 41335	d7b5fd465198
child 41384	30bedf58b177
permissions	-rw-r--r--