/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.prune.known.deadend.states.from.previous.iterations false -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.dynamic-abstractions-e23131f-m [2024-05-03 07:06:53,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-03 07:06:53,372 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2024-05-03 07:06:53,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-03 07:06:53,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-03 07:06:53,407 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-03 07:06:53,408 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-03 07:06:53,408 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-03 07:06:53,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-03 07:06:53,413 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-03 07:06:53,414 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-03 07:06:53,414 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-03 07:06:53,414 INFO L153 SettingsManager]: * Use SBE=true [2024-05-03 07:06:53,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-03 07:06:53,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-03 07:06:53,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-03 07:06:53,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-03 07:06:53,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-03 07:06:53,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-03 07:06:53,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-03 07:06:53,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-03 07:06:53,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-03 07:06:53,419 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-03 07:06:53,419 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-03 07:06:53,420 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-03 07:06:53,420 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-03 07:06:53,420 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-03 07:06:53,420 INFO L153 SettingsManager]: * To the following directory=./dump/ [2024-05-03 07:06:53,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-03 07:06:53,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-03 07:06:53,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-03 07:06:53,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-03 07:06:53,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-03 07:06:53,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-03 07:06:53,423 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2024-05-03 07:06:53,423 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-03 07:06:53,423 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-03 07:06:53,423 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2024-05-03 07:06:53,423 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-03 07:06:53,423 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION [2024-05-03 07:06:53,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-03 07:06:53,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-03 07:06:53,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-03 07:06:53,709 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-03 07:06:53,710 INFO L274 PluginConnector]: CDTParser initialized [2024-05-03 07:06:53,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2024-05-03 07:06:54,846 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-03 07:06:55,070 INFO L384 CDTParser]: Found 1 translation units. [2024-05-03 07:06:55,071 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2024-05-03 07:06:55,095 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/dcebf9fac/674987e1c9d24d199aef9013211d0cc1/FLAG3c966116e [2024-05-03 07:06:55,108 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/dcebf9fac/674987e1c9d24d199aef9013211d0cc1 [2024-05-03 07:06:55,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-03 07:06:55,111 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-03 07:06:55,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-03 07:06:55,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-03 07:06:55,121 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-03 07:06:55,122 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,122 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@638ba8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55, skipping insertion in model container [2024-05-03 07:06:55,123 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,161 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-03 07:06:55,598 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2024-05-03 07:06:55,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-03 07:06:55,647 INFO L202 MainTranslator]: Completed pre-run [2024-05-03 07:06:55,713 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i[41322,41335] [2024-05-03 07:06:55,730 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-05-03 07:06:55,799 INFO L206 MainTranslator]: Completed translation [2024-05-03 07:06:55,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55 WrapperNode [2024-05-03 07:06:55,799 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-03 07:06:55,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-03 07:06:55,801 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-03 07:06:55,801 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-03 07:06:55,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,840 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,859 INFO L138 Inliner]: procedures = 271, calls = 35, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2024-05-03 07:06:55,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-03 07:06:55,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-03 07:06:55,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-03 07:06:55,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-03 07:06:55,868 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,906 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-03 07:06:55,907 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-03 07:06:55,907 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-03 07:06:55,907 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-03 07:06:55,908 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (1/1) ... [2024-05-03 07:06:55,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-05-03 07:06:55,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:06:55,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-05-03 07:06:55,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-05-03 07:06:56,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-03 07:06:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-03 07:06:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-03 07:06:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-05-03 07:06:56,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-05-03 07:06:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-03 07:06:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-03 07:06:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-05-03 07:06:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-05-03 07:06:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-05-03 07:06:56,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-03 07:06:56,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-03 07:06:56,023 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-03 07:06:56,184 INFO L241 CfgBuilder]: Building ICFG [2024-05-03 07:06:56,186 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-03 07:06:56,371 INFO L282 CfgBuilder]: Performing block encoding [2024-05-03 07:06:56,407 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-03 07:06:56,407 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2024-05-03 07:06:56,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 07:06:56 BoogieIcfgContainer [2024-05-03 07:06:56,407 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-03 07:06:56,410 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-03 07:06:56,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-03 07:06:56,413 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-03 07:06:56,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.05 07:06:55" (1/3) ... [2024-05-03 07:06:56,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccf32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 07:06:56, skipping insertion in model container [2024-05-03 07:06:56,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.05 07:06:55" (2/3) ... [2024-05-03 07:06:56,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ccf32a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.05 07:06:56, skipping insertion in model container [2024-05-03 07:06:56,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.05 07:06:56" (3/3) ... [2024-05-03 07:06:56,415 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2024-05-03 07:06:56,424 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-05-03 07:06:56,433 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-03 07:06:56,433 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-05-03 07:06:56,433 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-03 07:06:56,481 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-05-03 07:06:56,535 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:06:56,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:06:56,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:06:56,540 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:06:56,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2024-05-03 07:06:56,593 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:06:56,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-03 07:06:56,608 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67815c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:06:56,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:06:56,705 INFO L78 Accepts]: Start accepts. Automaton has currently 201 states, but on-demand construction may add more states Word has length 61 [2024-05-03 07:06:56,707 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:06:56,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:06:56,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:06:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash -50405755, now seen corresponding path program 1 times [2024-05-03 07:06:56,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:06:56,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207087812] [2024-05-03 07:06:56,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:06:56,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:06:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:06:57,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:06:57,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:06:57,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207087812] [2024-05-03 07:06:57,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207087812] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-03 07:06:57,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858311091] [2024-05-03 07:06:57,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:06:57,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:06:57,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:06:57,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-03 07:06:57,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-03 07:06:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:06:57,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-03 07:06:57,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-03 07:06:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:06:57,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-03 07:06:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:06:57,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858311091] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-03 07:06:57,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-03 07:06:57,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-05-03 07:06:57,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209034450] [2024-05-03 07:06:57,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-03 07:06:57,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-03 07:06:57,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:06:57,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-03 07:06:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-05-03 07:06:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:06:57,552 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:06:57,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-03 07:06:57,554 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:06:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-03 07:06:57,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-03 07:06:57,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-03 07:06:57,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-05-03 07:06:57,929 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-03 07:06:57,930 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/2) [2024-05-03 07:06:57,941 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:06:57,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:06:57,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:06:57,945 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:06:57,953 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:06:57,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-05-03 07:06:57,955 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67815c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:06:57,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:06:57,961 INFO L78 Accepts]: Start accepts. Automaton has currently 62 states, but on-demand construction may add more states Word has length 52 [2024-05-03 07:06:57,961 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:06:57,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-03 07:06:57,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:06:57,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1523712866, now seen corresponding path program 1 times [2024-05-03 07:06:57,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:06:57,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311483085] [2024-05-03 07:06:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:06:57,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:06:57,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2024-05-03 07:06:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:06:58,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-03 07:06:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:06:58,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-03 07:06:58,062 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-03 07:06:58,062 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-05-03 07:06:58,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-03 07:06:58,066 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-03 07:06:58,066 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2024-05-03 07:06:58,067 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-05-03 07:06:58,067 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-05-03 07:06:58,098 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-05-03 07:06:58,101 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:06:58,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:06:58,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:06:58,108 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:06:58,112 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:06:58,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-03 07:06:58,113 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67815c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:06:58,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:06:58,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2024-05-03 07:06:58,631 INFO L78 Accepts]: Start accepts. Automaton has currently 2857 states, but on-demand construction may add more states Word has length 69 [2024-05-03 07:06:58,632 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:06:58,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:06:58,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:06:58,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2071925729, now seen corresponding path program 1 times [2024-05-03 07:06:58,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:06:58,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118952258] [2024-05-03 07:06:58,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:06:58,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:06:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:06:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-05-03 07:06:58,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:06:58,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118952258] [2024-05-03 07:06:58,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118952258] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-03 07:06:58,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-03 07:06:58,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-03 07:06:58,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685981260] [2024-05-03 07:06:58,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-03 07:06:58,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-03 07:06:58,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:06:58,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-03 07:06:58,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-03 07:06:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:06:58,922 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:06:58,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-03 07:06:58,923 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:06:59,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-03 07:06:59,673 INFO L78 Accepts]: Start accepts. Automaton has currently 8243 states, but on-demand construction may add more states Word has length 77 [2024-05-03 07:06:59,675 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:06:59,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-03 07:06:59,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:06:59,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:06:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash 675358263, now seen corresponding path program 1 times [2024-05-03 07:06:59,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:06:59,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124552494] [2024-05-03 07:06:59,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:06:59,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:06:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:06:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:06:59,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:06:59,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124552494] [2024-05-03 07:06:59,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124552494] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-03 07:06:59,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296369366] [2024-05-03 07:06:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:06:59,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:06:59,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:06:59,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-03 07:06:59,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-03 07:06:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:06:59,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-03 07:06:59,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-03 07:07:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:07:00,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-03 07:07:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:07:00,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296369366] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-03 07:07:00,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-03 07:07:00,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-05-03 07:07:00,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526786641] [2024-05-03 07:07:00,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-03 07:07:00,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-03 07:07:00,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:07:00,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-03 07:07:00,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-05-03 07:07:00,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:07:00,080 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:07:00,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.357142857142857) internal successors, (103), 14 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-03 07:07:00,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2024-05-03 07:07:00,081 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:07:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-03 07:07:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-03 07:07:00,507 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-03 07:07:00,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-05-03 07:07:00,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:07:00,714 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-05-03 07:07:00,714 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/2) [2024-05-03 07:07:00,717 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:00,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:07:00,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:07:00,719 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:07:00,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2024-05-03 07:07:00,726 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:07:00,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-05-03 07:07:00,726 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67815c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:00,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:07:00,729 INFO L78 Accepts]: Start accepts. Automaton has currently 87 states, but on-demand construction may add more states Word has length 60 [2024-05-03 07:07:00,730 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:07:00,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-03 07:07:00,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:07:00,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1098520228, now seen corresponding path program 1 times [2024-05-03 07:07:00,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:07:00,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667337573] [2024-05-03 07:07:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:07:00,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:07:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:07:00,768 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-03 07:07:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:07:00,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-03 07:07:00,783 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-03 07:07:00,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-05-03 07:07:00,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-03 07:07:00,784 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-03 07:07:00,784 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2024-05-03 07:07:00,785 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-05-03 07:07:00,785 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-05-03 07:07:00,813 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-05-03 07:07:00,816 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:00,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:07:00,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:07:00,819 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:07:00,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (8)] Waiting until timeout for monitored process [2024-05-03 07:07:00,825 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:07:00,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-03 07:07:00,826 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67815c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:00,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:07:07,426 INFO L78 Accepts]: Start accepts. Automaton has currently 70464 states, but on-demand construction may add more states Word has length 77 [2024-05-03 07:07:07,427 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:07:07,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:07:07,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:07:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash 78140479, now seen corresponding path program 1 times [2024-05-03 07:07:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:07:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106663706] [2024-05-03 07:07:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:07:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:07:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:07:07,572 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-05-03 07:07:07,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:07:07,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106663706] [2024-05-03 07:07:07,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106663706] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-03 07:07:07,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-03 07:07:07,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-03 07:07:07,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641811311] [2024-05-03 07:07:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-03 07:07:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-03 07:07:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:07:07,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-03 07:07:07,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-03 07:07:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:07:07,577 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:07:07,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-03 07:07:07,577 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:07:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-03 07:07:22,260 INFO L78 Accepts]: Start accepts. Automaton has currently 211093 states, but on-demand construction may add more states Word has length 85 [2024-05-03 07:07:22,260 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:07:22,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-03 07:07:22,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-05-03 07:07:22,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:07:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash 302016917, now seen corresponding path program 1 times [2024-05-03 07:07:22,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:07:22,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468011555] [2024-05-03 07:07:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:07:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:07:22,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:07:22,580 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:07:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-03 07:07:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468011555] [2024-05-03 07:07:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468011555] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-03 07:07:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302898261] [2024-05-03 07:07:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:07:22,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:07:22,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:07:22,588 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-03 07:07:22,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-05-03 07:07:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-03 07:07:22,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-03 07:07:22,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-03 07:07:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:07:22,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-03 07:07:22,858 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-03 07:07:22,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302898261] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-03 07:07:22,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-03 07:07:22,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-05-03 07:07:22,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711470787] [2024-05-03 07:07:22,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-03 07:07:22,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-05-03 07:07:22,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-03 07:07:22,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-05-03 07:07:22,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-05-03 07:07:22,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:07:22,861 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2024-05-03 07:07:22,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.611111111111111) internal successors, (119), 18 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-03 07:07:22,861 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2024-05-03 07:07:22,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2024-05-03 07:07:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-03 07:07:31,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-03 07:07:31,657 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-05-03 07:07:31,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-05-03 07:07:31,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-03 07:07:31,863 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-05-03 07:07:31,863 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION was SAFE (1/2) [2024-05-03 07:07:31,866 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:31,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:07:31,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:07:31,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:07:31,875 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:07:31,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ======== [2024-05-03 07:07:31,876 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67815c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:31,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:07:31,880 INFO L78 Accepts]: Start accepts. Automaton has currently 120 states, but on-demand construction may add more states Word has length 68 [2024-05-03 07:07:31,880 INFO L84 Accepts]: Finished accepts. word is accepted. [2024-05-03 07:07:31,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-03 07:07:31,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-03 07:07:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1574515355, now seen corresponding path program 1 times [2024-05-03 07:07:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-03 07:07:31,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269583735] [2024-05-03 07:07:31,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-03 07:07:31,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-03 07:07:31,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2024-05-03 07:07:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:07:31,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-05-03 07:07:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-05-03 07:07:31,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-05-03 07:07:31,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-05-03 07:07:31,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2024-05-03 07:07:31,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-03 07:07:31,939 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-05-03 07:07:31,941 INFO L308 ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was UNSAFE (2/2) [2024-05-03 07:07:31,941 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-05-03 07:07:31,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-05-03 07:07:31,976 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-05-03 07:07:31,983 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:31,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2024-05-03 07:07:31,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2024-05-03 07:07:31,986 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2024-05-03 07:07:31,989 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2024-05-03 07:07:31,989 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2024-05-03 07:07:31,990 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@67815c5d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-03 07:07:31,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-05-03 07:07:32,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (11)] Waiting until timeout for monitored process