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.
7 signature SLEDGEHAMMER_ISAR =
9 type params = ATP_Manager.params
11 val atps: string Unsynchronized.ref
12 val timeout: int Unsynchronized.ref
13 val full_types: bool Unsynchronized.ref
14 val default_params : theory -> (string * string) list -> params
15 val setup: theory -> theory
18 structure Sledgehammer_Isar : SLEDGEHAMMER_ISAR =
21 open Sledgehammer_Util
22 open Sledgehammer_Fact_Preprocessor
25 open Sledgehammer_Fact_Minimizer
27 (** Proof method used in Isar proofs **)
29 val neg_clausify_setup =
30 Method.setup @{binding neg_clausify}
31 (Scan.succeed (SIMPLE_METHOD' o neg_clausify_tac)
32 o tap (fn _ => legacy_feature "Old 'neg_clausify' method -- \
33 \rerun Sledgehammer to obtain a direct \
35 "conversion of goal to negated conjecture clauses (legacy)"
37 (** Attribute for converting a theorem into clauses **)
39 val parse_clausify_attribute : attribute context_parser =
41 >> (fn i => Thm.rule_attribute (fn context => fn th =>
42 let val thy = Context.theory_of context in
43 Meson.make_meta_clause (nth (cnf_axiom thy th) i)
47 Attrib.setup @{binding clausify}
48 (parse_clausify_attribute
49 o tap (fn _ => legacy_feature "Old 'clausify' attribute"))
50 "conversion of theorem to clauses"
52 (** Sledgehammer commands **)
54 fun add_to_relevance_override ns : relevance_override =
55 {add = ns, del = [], only = false}
56 fun del_from_relevance_override ns : relevance_override =
57 {add = [], del = ns, only = false}
58 fun only_relevance_override ns : relevance_override =
59 {add = ns, del = [], only = true}
60 val no_relevance_override = add_to_relevance_override []
61 fun merge_relevance_override_pairwise (r1 : relevance_override)
62 (r2 : relevance_override) =
63 {add = #add r1 @ #add r2, del = #del r1 @ #del r2,
64 only = #only r1 andalso #only r2}
65 fun merge_relevance_overrides rs =
66 fold merge_relevance_override_pairwise rs (only_relevance_override [])
70 val atps = Unsynchronized.ref ""
71 val timeout = Unsynchronized.ref 60
72 val full_types = Unsynchronized.ref false
75 ProofGeneralPgip.add_preference Preferences.category_proof
76 (Preferences.string_pref atps
78 "Default automatic provers (separated by whitespace)")
81 ProofGeneralPgip.add_preference Preferences.category_proof
82 (Preferences.int_pref timeout
83 "Sledgehammer: Time Limit"
84 "ATPs will be interrupted after this time (in seconds)")
87 ProofGeneralPgip.add_preference Preferences.category_proof
88 (Preferences.bool_pref full_types
89 "Sledgehammer: Full Types" "ATPs will use full type information")
91 type raw_param = string * string list
93 val default_default_params =
96 ("overlord", "false"),
97 ("explicit_apply", "false"),
98 ("respect_no_atp", "true"),
99 ("relevance_threshold", "50"),
100 ("relevance_convergence", "320"),
101 ("theory_relevant", "smart"),
102 ("defs_relevant", "false"),
103 ("isar_proof", "false"),
104 ("isar_shrink_factor", "1"),
105 ("minimize_timeout", "5 s")]
109 val negated_alias_params =
110 [("no_debug", "debug"),
111 ("quiet", "verbose"),
112 ("no_overlord", "overlord"),
113 ("partial_types", "full_types"),
114 ("implicit_apply", "explicit_apply"),
115 ("ignore_no_atp", "respect_no_atp"),
116 ("theory_irrelevant", "theory_relevant"),
117 ("defs_irrelevant", "defs_relevant"),
118 ("no_isar_proof", "isar_proof")]
120 val params_for_minimize =
121 ["debug", "verbose", "overlord", "full_types", "explicit_apply",
122 "isar_proof", "isar_shrink_factor", "minimize_timeout"]
124 val property_dependent_params = ["atps", "full_types", "timeout"]
126 fun is_known_raw_param s =
127 AList.defined (op =) default_default_params s orelse
128 AList.defined (op =) alias_params s orelse
129 AList.defined (op =) negated_alias_params s orelse
130 member (op =) property_dependent_params s
132 fun check_raw_param (s, _) =
133 if is_known_raw_param s then ()
134 else error ("Unknown parameter: " ^ quote s ^ ".")
136 fun unalias_raw_param (name, value) =
137 case AList.lookup (op =) alias_params name of
138 SOME name' => (name', value)
140 case AList.lookup (op =) negated_alias_params name of
141 SOME name' => (name', case value of
142 ["false"] => ["true"]
143 | ["true"] => ["false"]
146 | NONE => (name, value)
148 structure Data = Theory_Data(
149 type T = raw_param list
150 val empty = default_default_params |> map (apsnd single)
152 fun merge p : T = AList.merge (op =) (K true) p)
154 val set_default_raw_param = Data.map o AList.update (op =) o unalias_raw_param
155 fun default_raw_params thy =
157 |> fold (AList.default (op =))
158 [("atps", [case !atps of "" => default_atps_param_value () | s => s]),
159 ("full_types", [if !full_types then "true" else "false"]),
160 ("timeout", let val timeout = !timeout in
161 [if timeout <= 0 then "none"
162 else string_of_int timeout ^ " s"]
165 val infinity_time_in_secs = 60 * 60 * 24 * 365
166 val the_timeout = the_default (Time.fromSeconds infinity_time_in_secs)
168 fun extract_params thy default_params override_params =
170 val override_params = map unalias_raw_param override_params
171 val raw_params = rev override_params @ rev default_params
172 val lookup = Option.map (space_implode " ") o AList.lookup (op =) raw_params
173 val lookup_string = the_default "" o lookup
174 fun general_lookup_bool option default_value name =
176 SOME s => parse_bool_option option name s
177 | NONE => default_value
178 val lookup_bool = the o general_lookup_bool false (SOME false)
179 val lookup_bool_option = general_lookup_bool true NONE
180 fun lookup_time name =
181 the_timeout (case lookup name of
183 | SOME s => parse_time_option name s)
184 fun lookup_int name =
187 | SOME s => case Int.fromString s of
189 | NONE => error ("Parameter " ^ quote name ^
190 " must be assigned an integer value.")
191 val debug = lookup_bool "debug"
192 val verbose = debug orelse lookup_bool "verbose"
193 val overlord = lookup_bool "overlord"
194 val atps = lookup_string "atps" |> space_explode " "
195 val full_types = lookup_bool "full_types"
196 val explicit_apply = lookup_bool "explicit_apply"
197 val respect_no_atp = lookup_bool "respect_no_atp"
198 val relevance_threshold =
199 0.01 * Real.fromInt (lookup_int "relevance_threshold")
200 val relevance_convergence =
201 0.01 * Real.fromInt (lookup_int "relevance_convergence")
202 val theory_relevant = lookup_bool_option "theory_relevant"
203 val defs_relevant = lookup_bool "defs_relevant"
204 val isar_proof = lookup_bool "isar_proof"
205 val isar_shrink_factor = Int.max (1, lookup_int "isar_shrink_factor")
206 val timeout = lookup_time "timeout"
207 val minimize_timeout = lookup_time "minimize_timeout"
209 {debug = debug, verbose = verbose, overlord = overlord, atps = atps,
210 full_types = full_types, explicit_apply = explicit_apply,
211 respect_no_atp = respect_no_atp, relevance_threshold = relevance_threshold,
212 relevance_convergence = relevance_convergence,
213 theory_relevant = theory_relevant, defs_relevant = defs_relevant,
214 isar_proof = isar_proof, isar_shrink_factor = isar_shrink_factor,
215 timeout = timeout, minimize_timeout = minimize_timeout}
218 fun get_params thy = extract_params thy (default_raw_params thy)
219 fun default_params thy = get_params thy o map (apsnd single)
221 val subgoal_count = Logic.count_prems o prop_of o #goal o Proof.goal
223 (* Sledgehammer the given subgoal *)
225 fun run {atps = [], ...} _ _ _ _ = error "No ATP is set."
226 | run (params as {atps, timeout, ...}) i relevance_override minimize_command
228 case subgoal_count state of
229 0 => priority "No subgoal!"
232 val birth_time = Time.now ()
233 val death_time = Time.+ (birth_time, timeout)
235 val _ = priority "Sledgehammering..."
236 val _ = app (start_prover_thread params birth_time death_time i n
237 relevance_override minimize_command
241 fun minimize override_params i frefs state =
243 val thy = Proof.theory_of state
244 val ctxt = Proof.context_of state
245 val chained_ths = #facts (Proof.goal state)
246 fun theorems_from_ref ctxt fref =
248 val ths = ProofContext.get_fact ctxt fref
249 val name = Facts.string_of_ref fref
250 |> forall (member Thm.eq_thm chained_ths) ths
251 ? prefix chained_prefix
253 val name_thms_pairs = map (theorems_from_ref ctxt) frefs
255 case subgoal_count state of
256 0 => priority "No subgoal!"
259 priority (#2 (minimize_theorems (get_params thy override_params) i n
260 state name_thms_pairs)))
263 val sledgehammerN = "sledgehammer"
264 val sledgehammer_paramsN = "sledgehammer_params"
267 val minimizeN = "minimize"
268 val messagesN = "messages"
269 val available_atpsN = "available_atps"
270 val running_atpsN = "running_atps"
271 val kill_atpsN = "kill_atps"
272 val refresh_tptpN = "refresh_tptp"
275 fun minimizize_raw_param_name "timeout" = "minimize_timeout"
276 | minimizize_raw_param_name name = name
278 val is_raw_param_relevant_for_minimize =
279 member (op =) params_for_minimize o fst o unalias_raw_param
280 fun string_for_raw_param (key, values) =
281 key ^ (case space_implode " " values of "" => "" | value => " = " ^ value)
283 fun minimize_command override_params i atp_name fact_names =
284 sledgehammerN ^ " " ^ minimizeN ^ " [atp = " ^ atp_name ^
285 (override_params |> filter is_raw_param_relevant_for_minimize
286 |> implode o map (prefix ", " o string_for_raw_param)) ^
287 "] (" ^ space_implode " " fact_names ^ ")" ^
288 (if i = 1 then "" else " " ^ string_of_int i)
290 fun hammer_away override_params subcommand opt_i relevance_override state =
292 val thy = Proof.theory_of state
293 val _ = app check_raw_param override_params
295 if subcommand = runN then
296 let val i = the_default 1 opt_i in
297 run (get_params thy override_params) i relevance_override
298 (minimize_command override_params i) state
300 else if subcommand = minimizeN then
301 minimize (map (apfst minimizize_raw_param_name) override_params)
302 (the_default 1 opt_i) (#add relevance_override) state
303 else if subcommand = messagesN then
305 else if subcommand = available_atpsN then
307 else if subcommand = running_atpsN then
309 else if subcommand = kill_atpsN then
311 else if subcommand = refresh_tptpN then
312 refresh_systems_on_tptp ()
314 error ("Unknown subcommand: " ^ quote subcommand ^ ".")
317 fun sledgehammer_trans (((subcommand, params), relevance_override), opt_i) =
318 Toplevel.keep (hammer_away params subcommand opt_i relevance_override
321 fun string_for_raw_param (name, value) = name ^ " = " ^ space_implode " " value
323 fun sledgehammer_params_trans params =
325 (fold set_default_raw_param params
327 writeln ("Default parameters for Sledgehammer:\n" ^
328 (case rev (default_raw_params thy) of
331 (map check_raw_param params;
332 params |> map string_for_raw_param
333 |> sort_strings |> cat_lines)))))
335 val parse_key = Scan.repeat1 Parse.typ_group >> space_implode " "
336 val parse_value = Scan.repeat1 Parse.xname
337 val parse_param = parse_key -- Scan.optional (Parse.$$$ "=" |-- parse_value) []
338 val parse_params = Scan.optional (Args.bracks (Parse.list parse_param)) []
339 val parse_fact_refs =
340 Scan.repeat1 (Scan.unless (Parse.name -- Args.colon)
341 (Parse.xname -- Scan.option Attrib.thm_sel)
342 >> (fn (name, interval) =>
343 Facts.Named ((name, Position.none), interval)))
344 val parse_relevance_chunk =
345 (Args.add |-- Args.colon |-- parse_fact_refs >> add_to_relevance_override)
346 || (Args.del |-- Args.colon |-- parse_fact_refs
347 >> del_from_relevance_override)
348 || (parse_fact_refs >> only_relevance_override)
349 val parse_relevance_override =
350 Scan.optional (Args.parens (Scan.repeat parse_relevance_chunk
351 >> merge_relevance_overrides))
352 (add_to_relevance_override [])
353 val parse_sledgehammer_command =
354 (Scan.optional Parse.short_ident runN -- parse_params -- parse_relevance_override
355 -- Scan.option Parse.nat) #>> sledgehammer_trans
356 val parse_sledgehammer_params_command =
357 parse_params #>> sledgehammer_params_trans
360 Outer_Syntax.improper_command sledgehammerN
361 "search for first-order proof using automatic theorem provers" Keyword.diag
362 parse_sledgehammer_command
364 Outer_Syntax.command sledgehammer_paramsN
365 "set and display the default parameters for Sledgehammer" Keyword.thy_decl
366 parse_sledgehammer_params_command