java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-smtinterpol.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 09:26:42,590 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 09:26:42,592 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 09:26:42,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 09:26:42,605 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 09:26:42,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 09:26:42,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 09:26:42,610 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 09:26:42,611 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 09:26:42,612 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 09:26:42,613 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 09:26:42,613 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 09:26:42,614 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 09:26:42,616 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 09:26:42,617 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 09:26:42,618 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 09:26:42,618 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 09:26:42,620 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 09:26:42,622 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 09:26:42,624 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 09:26:42,625 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 09:26:42,627 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 09:26:42,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-26 09:26:42,639 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-smtinterpol.epf [2018-09-26 09:26:42,647 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 09:26:42,647 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 09:26:42,648 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 09:26:42,649 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-09-26 09:26:42,649 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 09:26:42,649 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 09:26:42,649 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-09-26 09:26:42,650 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 09:26:42,696 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 09:26:42,709 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 09:26:42,713 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 09:26:42,714 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 09:26:42,715 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 09:26:42,716 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl [2018-09-26 09:26:42,716 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product.bpl' [2018-09-26 09:26:42,767 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 09:26:42,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 09:26:42,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 09:26:42,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 09:26:42,772 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 09:26:42,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,811 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 09:26:42,811 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 09:26:42,812 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 09:26:42,814 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 09:26:42,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 09:26:42,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 09:26:42,815 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 09:26:42,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,831 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 09:26:42,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 09:26:42,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 09:26:42,838 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 09:26:42,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/1) ... [2018-09-26 09:26:42,926 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-09-26 09:26:42,927 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-09-26 09:26:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-09-26 09:26:43,134 INFO L343 CfgBuilder]: Using library mode [2018-09-26 09:26:43,135 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:26:43 BoogieIcfgContainer [2018-09-26 09:26:43,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 09:26:43,139 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 09:26:43,139 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 09:26:43,143 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 09:26:43,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 09:26:42" (1/2) ... [2018-09-26 09:26:43,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f356a0e and model type threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 09:26:43, skipping insertion in model container [2018-09-26 09:26:43,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 09:26:43" (2/2) ... [2018-09-26 09:26:43,148 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product.bpl [2018-09-26 09:26:43,160 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 09:26:43,169 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-09-26 09:26:43,227 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 09:26:43,228 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 09:26:43,228 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 09:26:43,228 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 09:26:43,228 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 09:26:43,228 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 09:26:43,229 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 09:26:43,229 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 09:26:43,229 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 09:26:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2018-09-26 09:26:43,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 09:26:43,264 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:26:43,266 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-26 09:26:43,267 INFO L423 AbstractCegarLoop]: === Iteration 1 === [productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:26:43,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:26:43,275 INFO L82 PathProgramCache]: Analyzing trace with hash 28755683, now seen corresponding path program 1 times [2018-09-26 09:26:43,282 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:26:43,495 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:26:43,495 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 09:26:43,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 09:26:43,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 09:26:43,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-09-26 09:26:43,512 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2018-09-26 09:26:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:26:43,847 INFO L93 Difference]: Finished difference Result 44 states and 75 transitions. [2018-09-26 09:26:43,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 09:26:43,850 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-26 09:26:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:26:43,867 INFO L225 Difference]: With dead ends: 44 [2018-09-26 09:26:43,868 INFO L226 Difference]: Without dead ends: 42 [2018-09-26 09:26:43,871 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-26 09:26:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-26 09:26:43,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2018-09-26 09:26:43,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-26 09:26:43,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2018-09-26 09:26:43,925 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 45 transitions. Word has length 5 [2018-09-26 09:26:43,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:26:43,925 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 45 transitions. [2018-09-26 09:26:43,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 09:26:43,927 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 45 transitions. [2018-09-26 09:26:43,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 09:26:43,928 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:26:43,928 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-26 09:26:43,929 INFO L423 AbstractCegarLoop]: === Iteration 2 === [productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:26:43,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:26:43,929 INFO L82 PathProgramCache]: Analyzing trace with hash 28971747, now seen corresponding path program 1 times [2018-09-26 09:26:43,930 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:26:44,035 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:26:44,038 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 09:26:44,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 09:26:44,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 09:26:44,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-09-26 09:26:44,041 INFO L87 Difference]: Start difference. First operand 28 states and 45 transitions. Second operand 6 states. [2018-09-26 09:26:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:26:44,229 INFO L93 Difference]: Finished difference Result 51 states and 87 transitions. [2018-09-26 09:26:44,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 09:26:44,231 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-26 09:26:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:26:44,235 INFO L225 Difference]: With dead ends: 51 [2018-09-26 09:26:44,235 INFO L226 Difference]: Without dead ends: 49 [2018-09-26 09:26:44,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-09-26 09:26:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-09-26 09:26:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34. [2018-09-26 09:26:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-26 09:26:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 55 transitions. [2018-09-26 09:26:44,255 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 55 transitions. Word has length 5 [2018-09-26 09:26:44,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:26:44,255 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 55 transitions. [2018-09-26 09:26:44,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 09:26:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 55 transitions. [2018-09-26 09:26:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 09:26:44,259 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:26:44,259 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-26 09:26:44,259 INFO L423 AbstractCegarLoop]: === Iteration 3 === [productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:26:44,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:26:44,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1864688358, now seen corresponding path program 1 times [2018-09-26 09:26:44,260 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:26:44,408 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:26:44,408 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-26 09:26:44,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 09:26:44,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 09:26:44,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-09-26 09:26:44,410 INFO L87 Difference]: Start difference. First operand 34 states and 55 transitions. Second operand 8 states. [2018-09-26 09:26:44,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:26:44,806 INFO L93 Difference]: Finished difference Result 82 states and 142 transitions. [2018-09-26 09:26:44,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-26 09:26:44,807 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-09-26 09:26:44,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:26:44,811 INFO L225 Difference]: With dead ends: 82 [2018-09-26 09:26:44,812 INFO L226 Difference]: Without dead ends: 80 [2018-09-26 09:26:44,814 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-09-26 09:26:44,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-09-26 09:26:44,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 44. [2018-09-26 09:26:44,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-26 09:26:44,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2018-09-26 09:26:44,829 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 7 [2018-09-26 09:26:44,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:26:44,830 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2018-09-26 09:26:44,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 09:26:44,830 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2018-09-26 09:26:44,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 09:26:44,831 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:26:44,831 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-09-26 09:26:44,832 INFO L423 AbstractCegarLoop]: === Iteration 4 === [productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:26:44,832 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:26:44,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1865765160, now seen corresponding path program 1 times [2018-09-26 09:26:44,833 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:26:44,891 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:26:44,891 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 09:26:44,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 09:26:44,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 09:26:44,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-26 09:26:44,893 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand 6 states. [2018-09-26 09:26:45,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:26:45,006 INFO L93 Difference]: Finished difference Result 70 states and 121 transitions. [2018-09-26 09:26:45,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 09:26:45,007 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2018-09-26 09:26:45,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:26:45,008 INFO L225 Difference]: With dead ends: 70 [2018-09-26 09:26:45,009 INFO L226 Difference]: Without dead ends: 68 [2018-09-26 09:26:45,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-09-26 09:26:45,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-09-26 09:26:45,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2018-09-26 09:26:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-09-26 09:26:45,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 80 transitions. [2018-09-26 09:26:45,034 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 80 transitions. Word has length 7 [2018-09-26 09:26:45,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:26:45,037 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 80 transitions. [2018-09-26 09:26:45,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 09:26:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 80 transitions. [2018-09-26 09:26:45,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 09:26:45,038 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:26:45,039 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-26 09:26:45,039 INFO L423 AbstractCegarLoop]: === Iteration 5 === [productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:26:45,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:26:45,040 INFO L82 PathProgramCache]: Analyzing trace with hash 2072633864, now seen corresponding path program 1 times [2018-09-26 09:26:45,041 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:26:45,090 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:26:45,090 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-26 09:26:45,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 09:26:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 09:26:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-09-26 09:26:45,092 INFO L87 Difference]: Start difference. First operand 47 states and 80 transitions. Second operand 7 states. [2018-09-26 09:26:45,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:26:45,286 INFO L93 Difference]: Finished difference Result 108 states and 190 transitions. [2018-09-26 09:26:45,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-09-26 09:26:45,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2018-09-26 09:26:45,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:26:45,289 INFO L225 Difference]: With dead ends: 108 [2018-09-26 09:26:45,289 INFO L226 Difference]: Without dead ends: 106 [2018-09-26 09:26:45,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-09-26 09:26:45,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2018-09-26 09:26:45,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 55. [2018-09-26 09:26:45,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-09-26 09:26:45,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 95 transitions. [2018-09-26 09:26:45,323 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 95 transitions. Word has length 7 [2018-09-26 09:26:45,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:26:45,323 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 95 transitions. [2018-09-26 09:26:45,324 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 09:26:45,324 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 95 transitions. [2018-09-26 09:26:45,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 09:26:45,329 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:26:45,330 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-09-26 09:26:45,330 INFO L423 AbstractCegarLoop]: === Iteration 6 === [productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:26:45,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:26:45,331 INFO L82 PathProgramCache]: Analyzing trace with hash 2071833542, now seen corresponding path program 1 times [2018-09-26 09:26:45,331 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 09:26:45,392 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 09:26:45,392 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-26 09:26:45,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 09:26:45,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 09:26:45,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2018-09-26 09:26:45,394 INFO L87 Difference]: Start difference. First operand 55 states and 95 transitions. Second operand 8 states. [2018-09-26 09:26:45,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 09:26:45,615 INFO L93 Difference]: Finished difference Result 116 states and 205 transitions. [2018-09-26 09:26:45,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-09-26 09:26:45,616 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2018-09-26 09:26:45,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 09:26:45,617 INFO L225 Difference]: With dead ends: 116 [2018-09-26 09:26:45,617 INFO L226 Difference]: Without dead ends: 114 [2018-09-26 09:26:45,619 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=519, Unknown=0, NotChecked=0, Total=650 [2018-09-26 09:26:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-09-26 09:26:45,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 56. [2018-09-26 09:26:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-26 09:26:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 97 transitions. [2018-09-26 09:26:45,642 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 97 transitions. Word has length 7 [2018-09-26 09:26:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 09:26:45,642 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 97 transitions. [2018-09-26 09:26:45,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 09:26:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 97 transitions. [2018-09-26 09:26:45,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 09:26:45,644 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 09:26:45,644 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-09-26 09:26:45,644 INFO L423 AbstractCegarLoop]: === Iteration 7 === [productErr1ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT, productErr2ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT]=== [2018-09-26 09:26:45,644 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 09:26:45,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1962114806, now seen corresponding path program 1 times [2018-09-26 09:26:45,645 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Received shutdown request... [2018-09-26 09:31:11,831 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 09:31:11,836 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 09:31:11,836 INFO L202 PluginConnector]: Adding new model threadpooling_product.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 09:31:11 BoogieIcfgContainer [2018-09-26 09:31:11,836 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 09:31:11,837 INFO L168 Benchmark]: Toolchain (without parser) took 269069.48 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -374.3 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 413.9 MB). Peak memory consumption was 39.6 MB. Max. memory is 7.1 GB. [2018-09-26 09:31:11,840 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 09:31:11,840 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 09:31:11,841 INFO L168 Benchmark]: Boogie Preprocessor took 22.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-26 09:31:11,842 INFO L168 Benchmark]: RCFGBuilder took 297.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-26 09:31:11,843 INFO L168 Benchmark]: TraceAbstraction took 268697.42 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -374.3 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 403.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. [2018-09-26 09:31:11,848 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 42.65 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.43 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 297.88 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 268697.42 ms. Allocated memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: -374.3 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 403.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 74). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 196 known predicates. - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 45). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 196 known predicates. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 85). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 196 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 94). Cancelled while BasicCegarLoop was analyzing trace of length 9 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 196 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 4 error locations. TIMEOUT Result, 268.6s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 264 SDtfs, 289 SDslu, 389 SDs, 0 SdLazy, 1022 SolverSat, 142 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 195 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.5s PdrRuntime, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product.bpl_AutomizerBpl-pdr-smtinterpol.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_09-31-11-869.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product.bpl_AutomizerBpl-pdr-smtinterpol.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_09-31-11-869.csv Completed graceful shutdown