author | blanchet |
Wed, 18 Aug 2010 17:09:05 +0200 | |
changeset 38589 | b03f8fe043ec |
parent 38586 | 09fe051f2782 |
child 38590 | bd443b426d56 |
permissions | -rw-r--r-- |
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(* Title: HOL/Tools/Sledgehammer/sledgehammer_fact_minimize.ML |
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Author: Philipp Meyer, TU Muenchen |
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Author: Jasmin Blanchette, TU Muenchen |
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|
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Minimization of theorem list for Metis using automatic theorem provers. |
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*) |
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|
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signature SLEDGEHAMMER_FACT_MINIMIZE = |
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sig |
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type params = Sledgehammer.params |
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val minimize_theorems : |
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params -> int -> int -> Proof.state -> (string * thm list) list |
|
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-> (string * thm list) list option * string |
|
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val run_minimize : params -> int -> Facts.ref list -> Proof.state -> unit |
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end; |
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|
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structure Sledgehammer_Fact_Minimize : SLEDGEHAMMER_FACT_MINIMIZE = |
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struct |
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|
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open ATP_Systems |
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open Sledgehammer_Util |
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open Sledgehammer_Fact_Filter |
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open Sledgehammer_Proof_Reconstruct |
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open Sledgehammer |
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|
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(* wrapper for calling external prover *) |
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|
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fun string_for_failure Unprovable = "Unprovable." |
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| string_for_failure TimedOut = "Timed out." |
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| string_for_failure _ = "Unknown error." |
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|
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fun n_theorems name_thms_pairs = |
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let val n = length name_thms_pairs in |
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string_of_int n ^ " theorem" ^ plural_s n ^ |
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(if n > 0 then |
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": " ^ space_implode " " |
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(name_thms_pairs |
|
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|> map (perhaps (try (unprefix chained_prefix))) |
|
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|> sort_distinct string_ord) |
|
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else |
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"") |
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end |
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|
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fun test_theorems ({debug, verbose, overlord, atps, full_types, |
38589
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relevance_threshold, relevance_convergence, |
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defs_relevant, isar_proof, isar_shrink_factor, ...} |
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: params) |
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(prover : prover) explicit_apply timeout subgoal state |
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name_thms_pairs = |
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let |
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val _ = |
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priority ("Testing " ^ n_theorems (map fst name_thms_pairs) ^ "...") |
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val params = |
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{debug = debug, verbose = verbose, overlord = overlord, atps = atps, |
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full_types = full_types, explicit_apply = explicit_apply, |
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relevance_threshold = relevance_threshold, |
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relevance_convergence = relevance_convergence, |
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max_relevant_per_iter = NONE, theory_relevant = NONE, |
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defs_relevant = defs_relevant, isar_proof = isar_proof, |
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isar_shrink_factor = isar_shrink_factor, timeout = timeout, |
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minimize_timeout = timeout} |
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"axiom_clauses" -> "axioms" (these are no longer clauses)
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val axioms = maps (fn (n, ths) => map (pair n) ths) name_thms_pairs |
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use "Proof.goal" in Sledgehammer's minimizer (just like everywhere else in Sledgehammer), not "Proof.raw_goal"
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val {context = ctxt, facts, goal} = Proof.goal state |
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val problem = |
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{subgoal = subgoal, goal = (ctxt, (facts, goal)), |
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relevance_override = {add = [], del = [], only = false}, |
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"axiom_clauses" -> "axioms" (these are no longer clauses)
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axioms = SOME axioms} |
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speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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val result as {outcome, used_thm_names, ...} = |
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prover params (K "") problem |
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in |
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priority (case outcome of |
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NONE => |
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if length used_thm_names = length name_thms_pairs then |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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"Found proof." |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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else |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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"Found proof with " ^ n_theorems used_thm_names ^ "." |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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| SOME failure => string_for_failure failure); |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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result |
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end |
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|
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(* minimalization of thms *) |
|
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||
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fun filter_used_facts used = |
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filter (member (op =) used o perhaps (try (unprefix chained_prefix)) o fst) |
|
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|
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fun sublinear_minimize _ [] p = p |
|
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| sublinear_minimize test (x :: xs) (seen, result) = |
|
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case test (xs @ seen) of |
|
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result as {outcome = NONE, proof, used_thm_names, ...} : prover_result => |
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sublinear_minimize test (filter_used_facts used_thm_names xs) |
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(filter_used_facts used_thm_names seen, result) |
|
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| _ => sublinear_minimize test xs (x :: seen, result) |
|
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||
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speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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95 |
(* Give the ATP some slack. The ATP gets further slack because the Sledgehammer |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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preprocessing time is included in the estimate below but isn't part of the |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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timeout. *) |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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val fudge_msecs = 250 |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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99 |
|
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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fun minimize_theorems {atps = [], ...} _ _ _ _ = error "No ATP is set." |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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101 |
| minimize_theorems |
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(params as {debug, atps = atp :: _, full_types, isar_proof, |
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103 |
isar_shrink_factor, minimize_timeout, ...}) |
38092
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speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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i n state name_thms_pairs = |
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let |
36378 | 106 |
val thy = Proof.theory_of state |
38092
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speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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val prover = get_prover_fun thy atp |
35969 | 108 |
val msecs = Time.toMilliseconds minimize_timeout |
31236 | 109 |
val _ = |
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move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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priority ("Sledgehammer minimize: ATP " ^ quote atp ^ |
36224 | 111 |
" with a time limit of " ^ string_of_int msecs ^ " ms.") |
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speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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val {context = ctxt, goal, ...} = Proof.goal state |
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val (_, hyp_ts, concl_t) = strip_subgoal goal i |
e458a0dd3dc1
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val explicit_apply = |
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not (forall (Meson.is_fol_term thy) |
38586 | 116 |
(concl_t :: hyp_ts @ |
117 |
maps (map prop_of o snd) name_thms_pairs)) |
|
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fun do_test timeout = |
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test_theorems params prover explicit_apply timeout i state |
38092
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speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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val timer = Timer.startRealTimer () |
31236 | 121 |
in |
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(case do_test minimize_timeout name_thms_pairs of |
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result as {outcome = NONE, pool, used_thm_names, |
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remove the "extra_clauses" business introduced in 19a5f1c8a844;
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conjecture_shape, ...} => |
38015 | 125 |
let |
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val time = Timer.checkRealTimer timer |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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parents:
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127 |
val new_timeout = |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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128 |
Int.min (msecs, Time.toMilliseconds time + fudge_msecs) |
81a003f7de0d
speed up the minimizer by using the time taken for the first iteration as a timeout for the following iterations, and fix a subtle bug in "string_for_failure"
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129 |
|> Time.fromMilliseconds |
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319c59682c51
move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
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130 |
val (min_thms, {proof, axiom_names, ...}) = |
38100
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use "explicit_apply" in the minimizer whenever it might make a difference to prevent freak failures;
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parents:
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sublinear_minimize (do_test new_timeout) |
38083
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remove the "extra_clauses" business introduced in 19a5f1c8a844;
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132 |
(filter_used_facts used_thm_names name_thms_pairs) ([], result) |
38094 | 133 |
val n = length min_thms |
38015 | 134 |
val _ = priority (cat_lines |
38094 | 135 |
["Minimized: " ^ string_of_int n ^ " theorem" ^ plural_s n] ^ |
136 |
(case filter (String.isPrefix chained_prefix o fst) min_thms of |
|
137 |
[] => "" |
|
138 |
| chained => " (including " ^ Int.toString (length chained) ^ |
|
139 |
" chained)") ^ ".") |
|
38015 | 140 |
in |
141 |
(SOME min_thms, |
|
142 |
proof_text isar_proof |
|
143 |
(pool, debug, isar_shrink_factor, ctxt, conjecture_shape) |
|
38282
319c59682c51
move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
38100
diff
changeset
|
144 |
(full_types, K "", proof, axiom_names, goal, i) |> fst) |
38015 | 145 |
end |
146 |
| {outcome = SOME TimedOut, ...} => |
|
147 |
(NONE, "Timeout: You can increase the time limit using the \"timeout\" \ |
|
148 |
\option (e.g., \"timeout = " ^ |
|
149 |
string_of_int (10 + msecs div 1000) ^ " s\").") |
|
150 |
| {outcome = SOME UnknownError, ...} => |
|
151 |
(* Failure sometimes mean timeout, unfortunately. *) |
|
152 |
(NONE, "Failure: No proof was found with the current time limit. You \ |
|
153 |
\can increase the time limit using the \"timeout\" \ |
|
154 |
\option (e.g., \"timeout = " ^ |
|
155 |
string_of_int (10 + msecs div 1000) ^ " s\").") |
|
156 |
| {message, ...} => (NONE, "ATP error: " ^ message)) |
|
37994
b04307085a09
make TPTP generator accept full first-order formulas
blanchet
parents:
37926
diff
changeset
|
157 |
handle ERROR msg => (NONE, "Error: " ^ msg) |
31236 | 158 |
end |
159 |
||
38282
319c59682c51
move Sledgehammer's HOL -> FOL translation to separate file (sledgehammer_translate.ML)
blanchet
parents:
38100
diff
changeset
|
160 |
fun run_minimize params i refs state = |
38045 | 161 |
let |
162 |
val ctxt = Proof.context_of state |
|
163 |
val chained_ths = #facts (Proof.goal state) |
|
164 |
val name_thms_pairs = map (name_thms_pair_from_ref ctxt chained_ths) refs |
|
165 |
in |
|
166 |
case subgoal_count state of |
|
167 |
0 => priority "No subgoal!" |
|
168 |
| n => |
|
169 |
(kill_atps (); |
|
170 |
priority (#2 (minimize_theorems params i n state name_thms_pairs))) |
|
171 |
end |
|
172 |
||
35866
513074557e06
move the Sledgehammer Isar commands together into one file;
blanchet
parents:
35865
diff
changeset
|
173 |
end; |