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_ATP_Translate

    25 open Sledgehammer_Provers

    26 open Sledgehammer_Minimize

    27 open Sledgehammer_Run

    29 val auto = Unsynchronized.ref false

    31 val _ =

    32   ProofGeneralPgip.add_preference Preferences.category_tracing

    33       (Preferences.bool_pref auto "auto-sledgehammer"

    34            "Run Sledgehammer automatically.")

    36 (** Sledgehammer commands **)

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

    39 fun add_relevance_override ns : relevance_override =

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

    41 fun del_relevance_override ns : relevance_override =

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

    43 fun only_relevance_override ns : relevance_override =

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

    45 fun merge_relevance_override_pairwise (r1 : relevance_override)

    46                                       (r2 : relevance_override) =

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

    48    only = #only r1 andalso #only r2}

    49 fun merge_relevance_overrides rs =

    50   fold merge_relevance_override_pairwise rs (only_relevance_override [])

    52 (*** parameters ***)

    54 val provers = Unsynchronized.ref ""

    55 val timeout = Unsynchronized.ref 30

    56 val full_types = Unsynchronized.ref false

    58 val _ =

    59   ProofGeneralPgip.add_preference Preferences.category_proof

    60       (Preferences.string_pref provers

    61           "Sledgehammer: Provers"

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

    64 val _ =

    65   ProofGeneralPgip.add_preference Preferences.category_proof

    66       (Preferences.int_pref timeout

    67           "Sledgehammer: Time Limit"

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

    70 val _ =

    71   ProofGeneralPgip.add_preference Preferences.category_proof

    72       (Preferences.bool_pref full_types

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

    75 type raw_param = string * string list

    77 val default_default_params =

    78   [("blocking", "false"),

    79    ("debug", "false"),

    80    ("verbose", "false"),

    81    ("overlord", "false"),

    82    ("type_sys", "smart"),

    83    ("explicit_apply", "false"),

    84    ("relevance_thresholds", "0.45 0.85"),

    85    ("max_relevant", "smart"),

    86    ("isar_proof", "false"),

    87    ("isar_shrink_factor", "1")]

    89 val alias_params =

    90   [("prover", "provers"),

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

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

    93 val negated_alias_params =

    94   [("non_blocking", "blocking"),

    95    ("no_debug", "debug"),

    96    ("quiet", "verbose"),

    97    ("no_overlord", "overlord"),

    98    ("partial_types", "full_types"),

    99    ("implicit_apply", "explicit_apply"),

   100    ("no_isar_proof", "isar_proof")]

   102 val params_for_minimize =

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

   104    "isar_shrink_factor", "timeout"]

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

   108 fun is_known_raw_param s =

   109   AList.defined (op =) default_default_params s orelse

   110   AList.defined (op =) alias_params s orelse

   111   AList.defined (op =) negated_alias_params s orelse

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

   114 fun check_raw_param (s, _) =

   115   if is_known_raw_param s then ()

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

   118 fun unalias_raw_param (name, value) =

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

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

   121   | NONE =>

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

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

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

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

   126                             | [] => ["false"]

   127                             | _ => value)

   128     | NONE => (name, value)

   130 structure Data = Theory_Data(

   131   type T = raw_param list

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

   133   val extend = I

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

   136 fun remotify_prover_if_available_and_not_already_remote ctxt 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 ctxt remote_name then SOME remote_name else NONE

   142     end

   144 fun remotify_prover_if_not_installed ctxt name =

   145   if is_prover_available ctxt name andalso is_prover_installed ctxt name then

   146     SOME name

   147   else

   148     remotify_prover_if_available_and_not_already_remote ctxt name

   150 fun avoid_too_many_local_threads _ _ [] = []

   151   | avoid_too_many_local_threads ctxt 0 provers =

   152     map_filter (remotify_prover_if_available_and_not_already_remote ctxt)

   153                provers

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

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

   156       prover :: avoid_too_many_local_threads ctxt n provers

   157     end

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

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

   161 fun default_provers_param_value ctxt =

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

   163   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   165   |> space_implode " "

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

   168 fun default_raw_params ctxt =

   169   let val thy = ProofContext.theory_of ctxt in

   170     Data.get thy

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

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

   173                             "" => default_provers_param_value ctxt

   174                           | s => s]),

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

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

   177                            [if timeout <= 0 then "none"

   178                             else string_of_int timeout]

   179                          end)]

   180   end

   182 val infinity_time_in_secs = 60 * 60 * 24 * 365

   183 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   185 fun extract_params auto default_params override_params =

   186   let

   187     val override_params = map unalias_raw_param override_params

   188     val raw_params = rev override_params @ rev default_params

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

   190     val lookup_string = the_default "" o lookup

   191     fun general_lookup_bool option default_value name =

   192       case lookup name of

   193         SOME s => parse_bool_option option name s

   194       | NONE => default_value

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

   196     fun lookup_time name =

   197       case lookup name of

   198         SOME s => parse_time_option name s

   199       | NONE => NONE

   200     fun lookup_int name =

   201       case lookup name of

   202         NONE => 0

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

   204                     SOME n => n

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

   206                                    " must be assigned an integer value.")

   207     fun lookup_real_pair name =

   208       case lookup name of

   209         NONE => (0.0, 0.0)

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

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

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

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

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

   215     fun lookup_int_option name =

   216       case lookup name of

   217         SOME "smart" => NONE

   218       | _ => SOME (lookup_int name)

   219     val blocking = auto orelse lookup_bool "blocking"

   220     val debug = not auto andalso lookup_bool "debug"

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

   222     val overlord = lookup_bool "overlord"

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

   224                   |> auto ? single o hd

   225     val type_sys =

   226       case (lookup_string "type_sys", lookup_bool "full_types") of

   227         ("tags", full_types) => Tags full_types

   228       | ("preds", full_types) => Preds full_types

   229       | ("const_args", _) => Const_Args

   230       | ("none", _) => No_Types

   231       | ("smart", true) => Tags true

   232       | ("smart", false) => Const_Args

   233       | (type_sys, _) => error ("Unknown type system: " ^ quote type_sys ^ ".")

   234     val explicit_apply = lookup_bool "explicit_apply"

   235     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   236     val max_relevant = lookup_int_option "max_relevant"

   237     val isar_proof = lookup_bool "isar_proof"

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

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

   240     val expect = lookup_string "expect"

   241   in

   242     {blocking = blocking, debug = debug, verbose = verbose, overlord = overlord,

   243      provers = provers, type_sys = type_sys, explicit_apply = explicit_apply,

   244      relevance_thresholds = relevance_thresholds, max_relevant = max_relevant,

   245      isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,

   246      timeout = timeout, expect = expect}

   247   end

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

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

   252 (* Sledgehammer the given subgoal *)

   254 val sledgehammerN = "sledgehammer"

   255 val sledgehammer_paramsN = "sledgehammer_params"

   257 val runN = "run"

   258 val minimizeN = "minimize"

   259 val messagesN = "messages"

   260 val available_proversN = "available_provers"

   261 val running_proversN = "running_provers"

   262 val kill_proversN = "kill_provers"

   263 val refresh_tptpN = "refresh_tptp"

   265 val is_raw_param_relevant_for_minimize =

   266   member (op =) params_for_minimize o fst o unalias_raw_param

   267 fun string_for_raw_param (key, values) =

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

   270 fun minimize_command override_params i prover_name fact_names =

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

   272   (override_params |> filter is_raw_param_relevant_for_minimize

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

   274   "] (" ^ space_implode " " fact_names ^ ")" ^

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

   277 fun hammer_away override_params subcommand opt_i relevance_override state =

   278   let

   279     val ctxt = Proof.context_of state

   280     val _ = app check_raw_param override_params

   281   in

   282     if subcommand = runN then

   283       let val i = the_default 1 opt_i in

   284         run_sledgehammer (get_params false ctxt override_params) false i

   285                          relevance_override (minimize_command override_params i)

   286                          state

   287         |> K ()

   288       end

   289     else if subcommand = minimizeN then

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

   291                    (#add relevance_override) state

   292     else if subcommand = messagesN then

   293       messages opt_i

   294     else if subcommand = available_proversN then

   295       available_provers ctxt

   296     else if subcommand = running_proversN then

   297       running_provers ()

   298     else if subcommand = kill_proversN then

   299       kill_provers ()

   300     else if subcommand = refresh_tptpN then

   301       refresh_systems_on_tptp ()

   302     else

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

   304   end

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

   307   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   308                  o Toplevel.proof_of)

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

   312 fun sledgehammer_params_trans params =

   313   Toplevel.theory

   314       (fold set_default_raw_param params

   315        #> tap (fn thy =>

   316                   let val ctxt = ProofContext.init_global thy in

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

   318                              (case default_raw_params ctxt |> rev of

   319                                 [] => "none"

   320                               | params =>

   321                                 (map check_raw_param params;

   322                                  params |> map string_for_raw_param

   323                                         |> sort_strings |> cat_lines)))

   324                   end))

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

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

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

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

   330 val parse_fact_refs =

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

   332 val parse_relevance_chunk =

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

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

   335   || (parse_fact_refs >> only_relevance_override)

   336 val parse_relevance_override =

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

   338                               >> merge_relevance_overrides))

   339                 no_relevance_override

   340 val parse_sledgehammer_command =

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

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

   343 val parse_sledgehammer_params_command =

   344   parse_params #>> sledgehammer_params_trans

   346 val _ =

   347   Outer_Syntax.improper_command sledgehammerN

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

   349       parse_sledgehammer_command

   350 val _ =

   351   Outer_Syntax.command sledgehammer_paramsN

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

   353       parse_sledgehammer_params_command

   355 fun auto_sledgehammer state =

   356   let val ctxt = Proof.context_of state in

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

   358                      (minimize_command [] 1) state

   359   end

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

   363 end;

author	blanchet
	Wed, 15 Dec 2010 11:26:28 +0100
changeset 41386	eb80538166b6
parent 41384	30bedf58b177
child 41401	626a58993122
permissions	-rw-r--r--