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   [("debug", "false"),

    79    ("verbose", "false"),

    80    ("overlord", "false"),

    81    ("blocking", "false"),

    82    ("type_sys", "smart"),

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

    84    ("max_relevant", "smart"),

    85    ("monomorphize", "false"),

    86    ("monomorphize_limit", "4"),

    87    ("explicit_apply", "false"),

    88    ("isar_proof", "false"),

    89    ("isar_shrink_factor", "1"),

    90    ("slicing", "true")]

    92 val alias_params =

    93   [("prover", "provers"),

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

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

    96 val negated_alias_params =

    97   [("no_debug", "debug"),

    98    ("quiet", "verbose"),

    99    ("no_overlord", "overlord"),

   100    ("non_blocking", "blocking"),

   101    ("dont_monomorphize", "monomorphize"),

   102    ("partial_types", "full_types"),

   103    ("implicit_apply", "explicit_apply"),

   104    ("no_isar_proof", "isar_proof"),

   105    ("no_slicing", "slicing")]

   107 val params_for_minimize =

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

   109    "isar_shrink_factor", "timeout"]

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

   113 fun is_known_raw_param s =

   114   AList.defined (op =) default_default_params s orelse

   115   AList.defined (op =) alias_params s orelse

   116   AList.defined (op =) negated_alias_params s orelse

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

   119 fun is_prover_list ctxt s =

   120   case space_explode " " s of

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

   122   | _ => false

   124 fun check_and_repair_raw_param ctxt (name, value) =

   125   if is_known_raw_param name then (name, value)

   126   else if is_prover_list ctxt name andalso null value then ("provers", [name])

   127   else error ("Unknown parameter: " ^ quote name ^ ".")

   129 fun unalias_raw_param (name, value) =

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

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

   132   | NONE =>

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

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

   135                               ["false"] => ["true"]

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

   137                             | [] => ["false"]

   138                             | _ => value)

   139     | NONE => (name, value)

   141 structure Data = Theory_Data

   142 (

   143   type T = raw_param list

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

   145   val extend = I

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

   147 )

   149 fun remotify_prover_if_supported_and_not_already_remote ctxt name =

   150   if String.isPrefix remote_prefix name then

   151     SOME name

   152   else

   153     let val remote_name = remote_prefix ^ name in

   154       if is_prover_supported ctxt remote_name then SOME remote_name else NONE

   155     end

   157 fun remotify_prover_if_not_installed ctxt name =

   158   if is_prover_supported ctxt name andalso is_prover_installed ctxt name then

   159     SOME name

   160   else

   161     remotify_prover_if_supported_and_not_already_remote ctxt name

   163 fun avoid_too_many_local_threads _ _ [] = []

   164   | avoid_too_many_local_threads ctxt 0 provers =

   165     map_filter (remotify_prover_if_supported_and_not_already_remote ctxt)

   166                provers

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

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

   169       prover :: avoid_too_many_local_threads ctxt n provers

   170     end

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

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

   174 fun default_provers_param_value ctxt =

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

   176   |> map_filter (remotify_prover_if_not_installed ctxt)

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

   178   |> space_implode " "

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

   181 fun default_raw_params ctxt =

   182   let val thy = Proof_Context.theory_of ctxt in

   183     Data.get thy

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

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

   186                             "" => default_provers_param_value ctxt

   187                           | s => s]),

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

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

   190                            [if timeout <= 0 then "none"

   191                             else string_of_int timeout]

   192                          end)]

   193   end

   195 val infinity_time_in_secs = 60 * 60 * 24 * 365

   196 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)

   198 fun extract_params auto default_params override_params =

   199   let

   200     val override_params = map unalias_raw_param override_params

   201     val raw_params = rev override_params @ rev default_params

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

   203     val lookup_string = the_default "" o lookup

   204     fun general_lookup_bool option default_value name =

   205       case lookup name of

   206         SOME s => parse_bool_option option name s

   207       | NONE => default_value

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

   209     fun lookup_time name =

   210       case lookup name of

   211         SOME s => parse_time_option name s

   212       | NONE => NONE

   213     fun lookup_int name =

   214       case lookup name of

   215         NONE => 0

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

   217                     SOME n => n

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

   219                                    " must be assigned an integer value.")

   220     fun lookup_real_pair name =

   221       case lookup name of

   222         NONE => (0.0, 0.0)

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

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

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

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

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

   228     fun lookup_int_option name =

   229       case lookup name of

   230         SOME "smart" => NONE

   231       | _ => SOME (lookup_int name)

   232     val debug = not auto andalso lookup_bool "debug"

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

   234     val overlord = lookup_bool "overlord"

   235     val blocking = auto orelse debug orelse lookup_bool "blocking"

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

   237                   |> auto ? single o hd

   238     val type_sys =

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

   240         ("many_typed", _) => Many_Typed

   241       | ("mangled", full_types) => Mangled full_types

   242       | ("args", full_types) => Args full_types

   243       | ("tags", full_types) => Tags full_types

   244       | ("none", false) => No_Types

   245       | (type_sys, full_types) =>

   246         if member (op =) ["none", "smart"] type_sys then

   247           if full_types then Tags true else Args false

   248         else

   249           error ("Unknown type system: " ^ quote type_sys ^ ".")

   250     val relevance_thresholds = lookup_real_pair "relevance_thresholds"

   251     val max_relevant = lookup_int_option "max_relevant"

   252     val monomorphize = lookup_bool "monomorphize"

   253     val monomorphize_limit = lookup_int "monomorphize_limit"

   254     val explicit_apply = lookup_bool "explicit_apply"

   255     val isar_proof = lookup_bool "isar_proof"

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

   257     val slicing = not auto andalso lookup_bool "slicing"

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

   259     val expect = lookup_string "expect"

   260   in

   261     {debug = debug, verbose = verbose, overlord = overlord, blocking = blocking,

   262      provers = provers, relevance_thresholds = relevance_thresholds,

   263      max_relevant = max_relevant, monomorphize = monomorphize,

   264      monomorphize_limit = monomorphize_limit, type_sys = type_sys,

   265      explicit_apply = explicit_apply, isar_proof = isar_proof,

   266      isar_shrink_factor = isar_shrink_factor, slicing = slicing,

   267      timeout = timeout, expect = expect}

   268   end

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

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

   273 (* Sledgehammer the given subgoal *)

   275 val sledgehammerN = "sledgehammer"

   276 val sledgehammer_paramsN = "sledgehammer_params"

   278 val runN = "run"

   279 val minimizeN = "minimize"

   280 val messagesN = "messages"

   281 val supported_proversN = "supported_provers"

   282 val running_proversN = "running_provers"

   283 val kill_proversN = "kill_provers"

   284 val refresh_tptpN = "refresh_tptp"

   286 val is_raw_param_relevant_for_minimize =

   287   member (op =) params_for_minimize o fst o unalias_raw_param

   288 fun string_for_raw_param (key, values) =

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

   291 fun minimize_command override_params i prover_name fact_names =

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

   293   (override_params |> filter is_raw_param_relevant_for_minimize

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

   295   "] (" ^ space_implode " " fact_names ^ ")" ^

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

   298 fun hammer_away override_params subcommand opt_i relevance_override state =

   299   let

   300     val ctxt = Proof.context_of state

   301     val override_params =

   302       override_params |> map (check_and_repair_raw_param ctxt)

   303   in

   304     if subcommand = runN then

   305       let val i = the_default 1 opt_i in

   306         run_sledgehammer (get_params false ctxt override_params) false i

   307                          relevance_override (minimize_command override_params i)

   308                          state

   309         |> K ()

   310       end

   311     else if subcommand = minimizeN then

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

   313                    (#add relevance_override) state

   314     else if subcommand = messagesN then

   315       messages opt_i

   316     else if subcommand = supported_proversN then

   317       supported_provers ctxt

   318     else if subcommand = running_proversN then

   319       running_provers ()

   320     else if subcommand = kill_proversN then

   321       kill_provers ()

   322     else if subcommand = refresh_tptpN then

   323       refresh_systems_on_tptp ()

   324     else

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

   326   end

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

   329   Toplevel.keep (hammer_away params subcommand opt_i relevance_override

   330                  o Toplevel.proof_of)

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

   334 fun sledgehammer_params_trans params =

   335   Toplevel.theory

   336       (fold set_default_raw_param params

   337        #> tap (fn thy =>

   338                   let val ctxt = Proof_Context.init_global thy in

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

   340                              (case default_raw_params ctxt |> rev of

   341                                 [] => "none"

   342                               | params =>

   343                                 params |> map (check_and_repair_raw_param ctxt)

   344                                        |> map string_for_raw_param

   345                                        |> sort_strings |> cat_lines))

   346                   end))

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

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

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

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

   352 val parse_fact_refs =

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

   354 val parse_relevance_chunk =

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

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

   357   || (parse_fact_refs >> only_relevance_override)

   358 val parse_relevance_override =

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

   360                               >> merge_relevance_overrides))

   361                 no_relevance_override

   362 val parse_sledgehammer_command =

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

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

   365 val parse_sledgehammer_params_command =

   366   parse_params #>> sledgehammer_params_trans

   368 val _ =

   369   Outer_Syntax.improper_command sledgehammerN

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

   371       parse_sledgehammer_command

   372 val _ =

   373   Outer_Syntax.command sledgehammer_paramsN

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

   375       parse_sledgehammer_params_command

   377 fun auto_sledgehammer state =

   378   let val ctxt = Proof.context_of state in

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

   380                      (minimize_command [] 1) state

   381   end

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

   385 end;

author	blanchet
	Sun, 01 May 2011 18:37:24 +0200
changeset 43419	ea2a28b1938f
parent 43394	08346ea46a59
child 43450	2552c09b1a72
permissions	-rw-r--r--