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_Filter
23 open Sledgehammer_Fact_Preprocessor
26 open Sledgehammer_Fact_Minimizer
28 (** Proof method used in Isar proofs **)
30 val neg_clausify_setup =
31 Method.setup @{binding neg_clausify}
32 (Scan.succeed (SIMPLE_METHOD' o neg_clausify_tac)
33 o tap (fn _ => legacy_feature "Old 'neg_clausify' method -- \
34 \rerun Sledgehammer to obtain a direct \
36 "conversion of goal to negated conjecture clauses (legacy)"
38 (** Attribute for converting a theorem into clauses **)
40 val parse_clausify_attribute : attribute context_parser =
42 >> (fn i => Thm.rule_attribute (fn context => fn th =>
43 let val thy = Context.theory_of context in
44 Meson.make_meta_clause (nth (cnf_axiom thy th) i)
48 Attrib.setup @{binding clausify}
49 (parse_clausify_attribute
50 o tap (fn _ => legacy_feature "Old 'clausify' attribute"))
51 "conversion of theorem to clauses"
53 (** Sledgehammer commands **)
55 fun add_to_relevance_override ns : relevance_override =
56 {add = ns, del = [], only = false}
57 fun del_from_relevance_override ns : relevance_override =
58 {add = [], del = ns, only = false}
59 fun only_relevance_override ns : relevance_override =
60 {add = ns, del = [], only = true}
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 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 (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 refs state =
243 val thy = Proof.theory_of state
244 val ctxt = Proof.context_of state
245 val chained_ths = #facts (Proof.goal state)
246 val name_thms_pairs = map (name_thms_pair_from_ref ctxt chained_ths) refs
248 case subgoal_count state of
249 0 => priority "No subgoal!"
252 priority (#2 (minimize_theorems (get_params thy override_params) i n
253 state name_thms_pairs)))
256 val sledgehammerN = "sledgehammer"
257 val sledgehammer_paramsN = "sledgehammer_params"
260 val minimizeN = "minimize"
261 val messagesN = "messages"
262 val available_atpsN = "available_atps"
263 val running_atpsN = "running_atps"
264 val kill_atpsN = "kill_atps"
265 val refresh_tptpN = "refresh_tptp"
267 fun minimizize_raw_param_name "timeout" = "minimize_timeout"
268 | minimizize_raw_param_name name = name
270 val is_raw_param_relevant_for_minimize =
271 member (op =) params_for_minimize o fst o unalias_raw_param
272 fun string_for_raw_param (key, values) =
273 key ^ (case space_implode " " values of "" => "" | value => " = " ^ value)
275 fun minimize_command override_params i atp_name fact_names =
276 sledgehammerN ^ " " ^ minimizeN ^ " [atp = " ^ atp_name ^
277 (override_params |> filter is_raw_param_relevant_for_minimize
278 |> implode o map (prefix ", " o string_for_raw_param)) ^
279 "] (" ^ space_implode " " fact_names ^ ")" ^
280 (if i = 1 then "" else " " ^ string_of_int i)
282 fun hammer_away override_params subcommand opt_i relevance_override state =
284 val thy = Proof.theory_of state
285 val _ = app check_raw_param override_params
287 if subcommand = runN then
288 let val i = the_default 1 opt_i in
289 run (get_params thy override_params) i relevance_override
290 (minimize_command override_params i) state
292 else if subcommand = minimizeN then
293 minimize (map (apfst minimizize_raw_param_name) override_params)
294 (the_default 1 opt_i) (#add relevance_override) state
295 else if subcommand = messagesN then
297 else if subcommand = available_atpsN then
299 else if subcommand = running_atpsN then
301 else if subcommand = kill_atpsN then
303 else if subcommand = refresh_tptpN then
304 refresh_systems_on_tptp ()
306 error ("Unknown subcommand: " ^ quote subcommand ^ ".")
309 fun sledgehammer_trans (((subcommand, params), relevance_override), opt_i) =
310 Toplevel.keep (hammer_away params subcommand opt_i relevance_override
313 fun string_for_raw_param (name, value) = name ^ " = " ^ space_implode " " value
315 fun sledgehammer_params_trans params =
317 (fold set_default_raw_param params
319 writeln ("Default parameters for Sledgehammer:\n" ^
320 (case rev (default_raw_params thy) of
323 (map check_raw_param params;
324 params |> map string_for_raw_param
325 |> sort_strings |> cat_lines)))))
327 val parse_key = Scan.repeat1 Parse.typ_group >> space_implode " "
328 val parse_value = Scan.repeat1 Parse.xname
329 val parse_param = parse_key -- Scan.optional (Parse.$$$ "=" |-- parse_value) []
330 val parse_params = Scan.optional (Args.bracks (Parse.list parse_param)) []
331 val parse_fact_refs =
332 Scan.repeat1 (Scan.unless (Parse.name -- Args.colon)
333 (Parse.xname -- Scan.option Attrib.thm_sel)
334 >> (fn (name, interval) =>
335 Facts.Named ((name, Position.none), interval)))
336 val parse_relevance_chunk =
337 (Args.add |-- Args.colon |-- parse_fact_refs >> add_to_relevance_override)
338 || (Args.del |-- Args.colon |-- parse_fact_refs
339 >> del_from_relevance_override)
340 || (parse_fact_refs >> only_relevance_override)
341 val parse_relevance_override =
342 Scan.optional (Args.parens (Scan.repeat parse_relevance_chunk
343 >> merge_relevance_overrides))
344 (add_to_relevance_override [])
345 val parse_sledgehammer_command =
346 (Scan.optional Parse.short_ident runN -- parse_params
347 -- parse_relevance_override -- Scan.option Parse.nat) #>> sledgehammer_trans
348 val parse_sledgehammer_params_command =
349 parse_params #>> sledgehammer_params_trans
352 Outer_Syntax.improper_command sledgehammerN
353 "search for first-order proof using automatic theorem provers" Keyword.diag
354 parse_sledgehammer_command
356 Outer_Syntax.command sledgehammer_paramsN
357 "set and display the default parameters for Sledgehammer" Keyword.thy_decl
358 parse_sledgehammer_params_command