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-z3.epf -i ../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 08:35:34,128 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:35:34,132 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:35:34,150 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:35:34,150 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:35:34,151 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:35:34,152 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:35:34,155 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:35:34,157 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:35:34,158 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:35:34,161 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-26 08:35:34,163 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-26 08:35:34,164 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-26 08:35:34,165 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-26 08:35:34,166 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-26 08:35:34,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-26 08:35:34,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-26 08:35:34,172 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-26 08:35:34,182 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-26 08:35:34,184 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-26 08:35:34,187 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-26 08:35:34,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-26 08:35:34,196 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-26 08:35:34,196 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-26 08:35:34,196 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-26 08:35:34,197 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-26 08:35:34,199 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-26 08:35:34,199 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-26 08:35:34,200 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-26 08:35:34,204 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-26 08:35:34,204 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-26 08:35:34,205 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-26 08:35:34,208 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-pdr-z3.epf [2018-09-26 08:35:34,225 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:35:34,225 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:35:34,226 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:35:34,227 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=PDR [2018-09-26 08:35:34,227 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-26 08:35:34,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:35:34,227 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:35:34,288 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:35:34,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:35:34,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:35:34,305 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:35:34,306 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:35:34,306 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl [2018-09-26 08:35:34,307 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/real-life/threadpooling_product_WithoutIf.bpl' [2018-09-26 08:35:34,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:35:34,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:35:34,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:35:34,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:35:34,366 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:35:34,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,404 WARN L165 Inliner]: Program contained no entry procedure! [2018-09-26 08:35:34,405 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-09-26 08:35:34,405 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-09-26 08:35:34,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:35:34,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:35:34,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:35:34,409 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:35:34,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... [2018-09-26 08:35:34,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:35:34,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:35:34,432 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:35:34,432 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:35:34,433 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-09-26 08:35:34,514 INFO L124 BoogieDeclarations]: Specification and implementation of procedure product given in one single declaration [2018-09-26 08:35:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure product [2018-09-26 08:35:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure product [2018-09-26 08:35:34,980 INFO L343 CfgBuilder]: Using library mode [2018-09-26 08:35:34,981 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:35:34 BoogieIcfgContainer [2018-09-26 08:35:34,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:35:34,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:35:34,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:35:34,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:35:34,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:35:34" (1/2) ... [2018-09-26 08:35:34,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf57892 and model type threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:35:34, skipping insertion in model container [2018-09-26 08:35:34,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:35:34" (2/2) ... [2018-09-26 08:35:34,989 INFO L112 eAbstractionObserver]: Analyzing ICFG threadpooling_product_WithoutIf.bpl [2018-09-26 08:35:35,000 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:PDR Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:35:35,008 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-09-26 08:35:35,048 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:35:35,049 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:35:35,049 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:35:35,049 INFO L383 AbstractCegarLoop]: Compute interpolants for PDR [2018-09-26 08:35:35,049 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:35:35,050 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:35:35,050 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:35:35,050 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:35:35,050 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:35:35,065 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-09-26 08:35:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:35:35,073 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:35:35,074 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:35:35,075 INFO L423 AbstractCegarLoop]: === Iteration 1 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:35:35,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:35:35,081 INFO L82 PathProgramCache]: Analyzing trace with hash 927686, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:35:35,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:35:35,302 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:35:35,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 08:35:35,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 08:35:35,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 08:35:35,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-26 08:35:35,314 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2018-09-26 08:35:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:35:35,777 INFO L93 Difference]: Finished difference Result 26 states and 39 transitions. [2018-09-26 08:35:35,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 08:35:35,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-09-26 08:35:35,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:35:35,801 INFO L225 Difference]: With dead ends: 26 [2018-09-26 08:35:35,802 INFO L226 Difference]: Without dead ends: 24 [2018-09-26 08:35:35,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-09-26 08:35:35,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-09-26 08:35:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-09-26 08:35:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-26 08:35:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2018-09-26 08:35:35,843 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 33 transitions. Word has length 4 [2018-09-26 08:35:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:35:35,843 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-09-26 08:35:35,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 08:35:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 33 transitions. [2018-09-26 08:35:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:35:35,844 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:35:35,845 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:35:35,845 INFO L423 AbstractCegarLoop]: === Iteration 2 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:35:35,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:35:35,846 INFO L82 PathProgramCache]: Analyzing trace with hash 930088, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:35:35,861 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:35:35,983 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:35:35,983 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-26 08:35:35,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 08:35:35,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 08:35:35,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-26 08:35:35,985 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 5 states. [2018-09-26 08:35:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:35:36,234 INFO L93 Difference]: Finished difference Result 28 states and 41 transitions. [2018-09-26 08:35:36,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 08:35:36,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-09-26 08:35:36,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:35:36,236 INFO L225 Difference]: With dead ends: 28 [2018-09-26 08:35:36,236 INFO L226 Difference]: Without dead ends: 26 [2018-09-26 08:35:36,238 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-09-26 08:35:36,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-09-26 08:35:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-09-26 08:35:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-26 08:35:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 39 transitions. [2018-09-26 08:35:36,245 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 39 transitions. Word has length 4 [2018-09-26 08:35:36,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:35:36,246 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 39 transitions. [2018-09-26 08:35:36,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 08:35:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 39 transitions. [2018-09-26 08:35:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 08:35:36,247 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:35:36,247 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-26 08:35:36,248 INFO L423 AbstractCegarLoop]: === Iteration 3 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:35:36,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:35:36,249 INFO L82 PathProgramCache]: Analyzing trace with hash 28768015, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:35:36,257 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:35:36,398 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:35:36,398 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 08:35:36,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 08:35:36,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 08:35:36,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-26 08:35:36,400 INFO L87 Difference]: Start difference. First operand 26 states and 39 transitions. Second operand 6 states. [2018-09-26 08:35:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:35:37,065 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2018-09-26 08:35:37,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 08:35:37,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-26 08:35:37,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:35:37,068 INFO L225 Difference]: With dead ends: 37 [2018-09-26 08:35:37,068 INFO L226 Difference]: Without dead ends: 35 [2018-09-26 08:35:37,070 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-26 08:35:37,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-26 08:35:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2018-09-26 08:35:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-26 08:35:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 50 transitions. [2018-09-26 08:35:37,080 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 50 transitions. Word has length 5 [2018-09-26 08:35:37,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:35:37,080 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 50 transitions. [2018-09-26 08:35:37,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 08:35:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 50 transitions. [2018-09-26 08:35:37,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-09-26 08:35:37,082 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:35:37,082 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-09-26 08:35:37,082 INFO L423 AbstractCegarLoop]: === Iteration 4 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:35:37,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:35:37,083 INFO L82 PathProgramCache]: Analyzing trace with hash 28831153, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:35:37,101 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:35:37,207 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:35:37,207 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-26 08:35:37,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 08:35:37,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 08:35:37,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-26 08:35:37,208 INFO L87 Difference]: Start difference. First operand 32 states and 50 transitions. Second operand 6 states. [2018-09-26 08:35:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:35:37,524 INFO L93 Difference]: Finished difference Result 44 states and 68 transitions. [2018-09-26 08:35:37,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 08:35:37,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2018-09-26 08:35:37,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:35:37,526 INFO L225 Difference]: With dead ends: 44 [2018-09-26 08:35:37,526 INFO L226 Difference]: Without dead ends: 42 [2018-09-26 08:35:37,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-26 08:35:37,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-09-26 08:35:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-09-26 08:35:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-09-26 08:35:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 63 transitions. [2018-09-26 08:35:37,536 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 63 transitions. Word has length 5 [2018-09-26 08:35:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:35:37,537 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 63 transitions. [2018-09-26 08:35:37,537 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 08:35:37,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 63 transitions. [2018-09-26 08:35:37,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-09-26 08:35:37,538 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:35:37,538 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2018-09-26 08:35:37,538 INFO L423 AbstractCegarLoop]: === Iteration 5 === [productErr2ASSERT_VIOLATIONASSERT, productErr1ASSERT_VIOLATIONASSERT, productErr3ASSERT_VIOLATIONASSERT, productErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:35:37,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:35:37,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1866934377, now seen corresponding path program 1 times No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:35:37,555 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:36:52,285 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2018-09-26 08:37:28,090 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2018-09-26 08:38:17,537 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2018-09-26 08:39:23,685 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 Received shutdown request... [2018-09-26 08:40:06,796 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in [2018-09-26 08:40:06,797 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-26 08:40:06,802 WARN L206 ceAbstractionStarter]: Timeout [2018-09-26 08:40:06,803 INFO L202 PluginConnector]: Adding new model threadpooling_product_WithoutIf.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 08:40:06 BoogieIcfgContainer [2018-09-26 08:40:06,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 08:40:06,804 INFO L168 Benchmark]: Toolchain (without parser) took 272446.25 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -226.0 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 355.7 MB). Peak memory consumption was 129.7 MB. Max. memory is 7.1 GB. [2018-09-26 08:40:06,805 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 08:40:06,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.13 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 08:40:06,807 INFO L168 Benchmark]: Boogie Preprocessor took 23.12 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 08:40:06,808 INFO L168 Benchmark]: RCFGBuilder took 549.56 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-26 08:40:06,809 INFO L168 Benchmark]: TraceAbstraction took 271820.79 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -226.0 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 334.5 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. [2018-09-26 08:40:06,813 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 0.19 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 42.13 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 23.12 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 549.56 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 271820.79 ms. Allocated memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: -226.0 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 334.5 MB). Peak memory consumption was 108.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 69). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 58]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 58). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 78). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - TimeoutResultAtElement [Line: 37]: Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 37). Cancelled while BasicCegarLoop was analyzing trace of length 8 with TraceHistMax 2, while PredicateComparison was comparing new predicate (quantifier-free) to 135 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 4 error locations. TIMEOUT Result, 271.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 105 SDtfs, 76 SDslu, 86 SDs, 0 SdLazy, 351 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s 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_WithoutIf.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_08-40-06-825.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/threadpooling_product_WithoutIf.bpl_AutomizerBpl-pdr-z3.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_08-40-06-825.csv Completed graceful shutdown