implemented new type system encoding "overload_args", which is more lightweight than "const_args" (the unsound default) and hopefully almost as sound
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 = 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
19 structure Sledgehammer_Isar : SLEDGEHAMMER_ISAR =
23 open Sledgehammer_Util
24 open Sledgehammer_Provers
25 open Sledgehammer_Minimize
28 val auto = Unsynchronized.ref false
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 [])
53 val provers = Unsynchronized.ref ""
54 val timeout = Unsynchronized.ref 30
55 val full_types = Unsynchronized.ref false
58 ProofGeneralPgip.add_preference Preferences.category_proof
59 (Preferences.string_pref provers
60 "Sledgehammer: Provers"
61 "Default automatic provers (separated by whitespace)")
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)")
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"),
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")]
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"),
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", "type_sys", "full_types", "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)
121 case AList.lookup (op =) negated_alias_params name of
122 SOME name' => (name', case value of
123 ["false"] => ["true"]
124 | ["true"] => ["false"]
127 | NONE => (name, value)
129 structure Data = Theory_Data(
130 type T = raw_param list
131 val empty = default_default_params |> map (apsnd single)
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
139 let val remote_name = remote_prefix ^ name in
140 if is_prover_available ctxt remote_name then SOME remote_name else NONE
143 fun remotify_prover_if_not_installed ctxt name =
144 if is_prover_available ctxt name andalso is_prover_installed ctxt name then
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)
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
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 ())
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
170 |> fold (AList.default (op =))
171 [("provers", [case !provers of
172 "" => default_provers_param_value ctxt
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]
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 =
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 =
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 =
197 SOME s => parse_time_option name s
199 fun lookup_int name =
202 | SOME s => case Int.fromString s of
204 | NONE => error ("Parameter " ^ quote name ^
205 " must be assigned an integer value.")
206 fun lookup_real_pair name =
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 =
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 type_sys = lookup_string "type_sys"
225 val full_types = lookup_bool "full_types"
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"
234 {blocking = blocking, debug = debug, verbose = verbose, overlord = overlord,
235 provers = provers, type_sys = type_sys, full_types = full_types,
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}
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"
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 =
272 val ctxt = Proof.context_of state
273 val _ = app check_raw_param override_params
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)
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
287 else if subcommand = available_proversN then
288 available_provers ctxt
289 else if subcommand = running_proversN then
291 else if subcommand = kill_proversN then
293 else if subcommand = refresh_tptpN then
294 refresh_systems_on_tptp ()
296 error ("Unknown subcommand: " ^ quote subcommand ^ ".")
299 fun sledgehammer_trans (((subcommand, params), relevance_override), opt_i) =
300 Toplevel.keep (hammer_away params subcommand opt_i relevance_override
303 fun string_for_raw_param (name, value) = name ^ " = " ^ space_implode " " value
305 fun sledgehammer_params_trans params =
307 (fold set_default_raw_param params
309 let val ctxt = ProofContext.init_global thy in
310 writeln ("Default parameters for Sledgehammer:\n" ^
311 (case default_raw_params ctxt |> rev of
314 (map check_raw_param params;
315 params |> map string_for_raw_param
316 |> sort_strings |> cat_lines)))
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
340 Outer_Syntax.improper_command sledgehammerN
341 "search for first-order proof using automatic theorem provers" Keyword.diag
342 parse_sledgehammer_command
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
354 val setup = Auto_Tools.register_tool (auto, auto_sledgehammer)