/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 04:10:18,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 04:10:18,219 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 04:10:18,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 04:10:18,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 04:10:18,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 04:10:18,244 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 04:10:18,244 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 04:10:18,245 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 04:10:18,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 04:10:18,245 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 04:10:18,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 04:10:18,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 04:10:18,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 04:10:18,246 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 04:10:18,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 04:10:18,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 04:10:18,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 04:10:18,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 04:10:18,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 04:10:18,248 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 04:10:18,250 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 04:10:18,250 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 04:10:18,251 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 04:10:18,251 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 04:10:18,251 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 04:10:18,251 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 04:10:18,252 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:10:18,252 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 04:10:18,252 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 04:10:18,253 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 04:10:18,253 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 04:10:18,253 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 04:10:18,253 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 04:10:18,254 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 04:10:18,254 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 04:10:18,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 04:10:18,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 04:10:18,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 04:10:18,510 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 04:10:18,510 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 04:10:18,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-25 04:10:19,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 04:10:19,606 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 04:10:19,607 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_70-funloop_racefree.i [2023-08-25 04:10:19,621 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/628bcd91c/49bf992c6b134ac3a01b1ae456befa26/FLAG725045042 [2023-08-25 04:10:19,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/628bcd91c/49bf992c6b134ac3a01b1ae456befa26 [2023-08-25 04:10:19,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 04:10:19,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 04:10:19,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 04:10:19,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 04:10:19,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 04:10:19,645 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:10:19" (1/1) ... [2023-08-25 04:10:19,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527049e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:19, skipping insertion in model container [2023-08-25 04:10:19,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 04:10:19" (1/1) ... [2023-08-25 04:10:19,685 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 04:10:19,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:10:20,013 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 04:10:20,035 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:10:20,036 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-25 04:10:20,041 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-25 04:10:20,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 04:10:20,091 INFO L206 MainTranslator]: Completed translation [2023-08-25 04:10:20,092 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20 WrapperNode [2023-08-25 04:10:20,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 04:10:20,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 04:10:20,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 04:10:20,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 04:10:20,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,130 INFO L138 Inliner]: procedures = 271, calls = 32, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 267 [2023-08-25 04:10:20,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 04:10:20,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 04:10:20,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 04:10:20,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 04:10:20,137 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,140 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,141 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,150 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,168 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,170 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 04:10:20,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 04:10:20,174 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 04:10:20,174 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 04:10:20,174 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (1/1) ... [2023-08-25 04:10:20,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 04:10:20,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:10:20,199 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 04:10:20,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 04:10:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 04:10:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 04:10:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 04:10:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 04:10:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 04:10:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 04:10:20,225 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 04:10:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 04:10:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 04:10:20,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 04:10:20,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 04:10:20,227 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 04:10:20,349 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 04:10:20,350 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 04:10:20,735 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 04:10:20,743 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 04:10:20,744 INFO L302 CfgBuilder]: Removed 25 assume(true) statements. [2023-08-25 04:10:20,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:10:20 BoogieIcfgContainer [2023-08-25 04:10:20,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 04:10:20,748 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 04:10:20,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 04:10:20,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 04:10:20,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 04:10:19" (1/3) ... [2023-08-25 04:10:20,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d86d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:10:20, skipping insertion in model container [2023-08-25 04:10:20,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 04:10:20" (2/3) ... [2023-08-25 04:10:20,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65d86d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 04:10:20, skipping insertion in model container [2023-08-25 04:10:20,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 04:10:20" (3/3) ... [2023-08-25 04:10:20,752 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2023-08-25 04:10:20,763 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 04:10:20,763 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-25 04:10:20,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 04:10:20,829 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-25 04:10:20,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 277 transitions, 562 flow [2023-08-25 04:10:20,971 INFO L124 PetriNetUnfolderBase]: 52/404 cut-off events. [2023-08-25 04:10:20,971 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:10:20,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 404 events. 52/404 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1739 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 239. Up to 8 conditions per place. [2023-08-25 04:10:20,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 277 transitions, 562 flow [2023-08-25 04:10:20,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 277 transitions, 562 flow [2023-08-25 04:10:20,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:10:21,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 277 transitions, 562 flow [2023-08-25 04:10:21,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 277 transitions, 562 flow [2023-08-25 04:10:21,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 277 transitions, 562 flow [2023-08-25 04:10:21,058 INFO L124 PetriNetUnfolderBase]: 52/404 cut-off events. [2023-08-25 04:10:21,059 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:10:21,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 404 events. 52/404 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1739 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 239. Up to 8 conditions per place. [2023-08-25 04:10:21,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 28462 [2023-08-25 04:10:23,552 INFO L134 LiptonReduction]: Checked pairs total: 107895 [2023-08-25 04:10:23,552 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-25 04:10:23,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:10:23,571 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@19a572dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:10:23,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 04:10:23,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:10:23,577 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2023-08-25 04:10:23,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 04:10:23,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:23,578 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-25 04:10:23,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:10:23,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1208975384, now seen corresponding path program 1 times [2023-08-25 04:10:23,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:23,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266230313] [2023-08-25 04:10:23,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:23,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:10:23,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266230313] [2023-08-25 04:10:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266230313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:10:23,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:10:23,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:10:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922047117] [2023-08-25 04:10:23,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:10:23,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:10:23,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:23,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:10:23,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:10:23,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 458 [2023-08-25 04:10:23,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 139 transitions, 286 flow. Second operand has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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) [2023-08-25 04:10:23,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:23,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 458 [2023-08-25 04:10:23,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:10:24,054 INFO L124 PetriNetUnfolderBase]: 528/1847 cut-off events. [2023-08-25 04:10:24,054 INFO L125 PetriNetUnfolderBase]: For 3/8 co-relation queries the response was YES. [2023-08-25 04:10:24,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1847 events. 528/1847 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13142 event pairs, 437 based on Foata normal form. 221/1840 useless extension candidates. Maximal degree in co-relation 2739. Up to 990 conditions per place. [2023-08-25 04:10:24,061 INFO L140 encePairwiseOnDemand]: 433/458 looper letters, 49 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-08-25 04:10:24,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 118 transitions, 346 flow [2023-08-25 04:10:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:10:24,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:10:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-25 04:10:24,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691411935953421 [2023-08-25 04:10:24,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-25 04:10:24,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-25 04:10:24,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:10:24,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-25 04:10:24,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 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) [2023-08-25 04:10:24,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 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) [2023-08-25 04:10:24,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 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) [2023-08-25 04:10:24,085 INFO L175 Difference]: Start difference. First operand has 114 places, 139 transitions, 286 flow. Second operand 3 states and 782 transitions. [2023-08-25 04:10:24,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 118 transitions, 346 flow [2023-08-25 04:10:24,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:10:24,089 INFO L231 Difference]: Finished difference. Result has 117 places, 118 transitions, 254 flow [2023-08-25 04:10:24,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=117, PETRI_TRANSITIONS=118} [2023-08-25 04:10:24,093 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 3 predicate places. [2023-08-25 04:10:24,093 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 118 transitions, 254 flow [2023-08-25 04:10:24,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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) [2023-08-25 04:10:24,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:24,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-25 04:10:24,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 04:10:24,094 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:10:24,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1500335221, now seen corresponding path program 1 times [2023-08-25 04:10:24,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:24,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892718025] [2023-08-25 04:10:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:24,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:24,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:10:24,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892718025] [2023-08-25 04:10:24,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892718025] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:10:24,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073668276] [2023-08-25 04:10:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:24,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:24,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:10:24,173 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:10:24,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 04:10:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:24,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:10:24,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:10:24,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:10:24,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:10:24,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:10:24,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073668276] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:10:24,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:10:24,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-25 04:10:24,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94160795] [2023-08-25 04:10:24,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:10:24,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 04:10:24,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 04:10:24,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-25 04:10:24,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 458 [2023-08-25 04:10:24,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 118 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 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) [2023-08-25 04:10:24,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:24,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 458 [2023-08-25 04:10:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:10:24,562 INFO L124 PetriNetUnfolderBase]: 528/1850 cut-off events. [2023-08-25 04:10:24,562 INFO L125 PetriNetUnfolderBase]: For 3/8 co-relation queries the response was YES. [2023-08-25 04:10:24,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 1850 events. 528/1850 cut-off events. For 3/8 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13187 event pairs, 437 based on Foata normal form. 0/1622 useless extension candidates. Maximal degree in co-relation 2849. Up to 990 conditions per place. [2023-08-25 04:10:24,569 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 49 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-25 04:10:24,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 121 transitions, 374 flow [2023-08-25 04:10:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:10:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:10:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1473 transitions. [2023-08-25 04:10:24,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5360262008733624 [2023-08-25 04:10:24,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1473 transitions. [2023-08-25 04:10:24,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1473 transitions. [2023-08-25 04:10:24,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:10:24,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1473 transitions. [2023-08-25 04:10:24,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.5) internal successors, (1473), 6 states have internal predecessors, (1473), 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) [2023-08-25 04:10:24,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 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) [2023-08-25 04:10:24,581 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 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) [2023-08-25 04:10:24,583 INFO L175 Difference]: Start difference. First operand has 117 places, 118 transitions, 254 flow. Second operand 6 states and 1473 transitions. [2023-08-25 04:10:24,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 121 transitions, 374 flow [2023-08-25 04:10:24,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 121 transitions, 370 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 04:10:24,590 INFO L231 Difference]: Finished difference. Result has 124 places, 121 transitions, 286 flow [2023-08-25 04:10:24,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=124, PETRI_TRANSITIONS=121} [2023-08-25 04:10:24,591 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 10 predicate places. [2023-08-25 04:10:24,592 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 286 flow [2023-08-25 04:10:24,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 237.5) internal successors, (1425), 6 states have internal predecessors, (1425), 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) [2023-08-25 04:10:24,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:24,595 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-25 04:10:24,602 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 04:10:24,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:24,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:10:24,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:24,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1761232088, now seen corresponding path program 2 times [2023-08-25 04:10:24,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:24,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247883340] [2023-08-25 04:10:24,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:24,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:10:24,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247883340] [2023-08-25 04:10:24,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247883340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:10:24,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219339832] [2023-08-25 04:10:24,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 04:10:24,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:24,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:10:24,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:10:24,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 04:10:24,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 04:10:24,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 04:10:24,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 04:10:24,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:10:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:10:24,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:10:25,021 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 04:10:25,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219339832] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:10:25,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:10:25,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-25 04:10:25,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357823224] [2023-08-25 04:10:25,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:10:25,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-25 04:10:25,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:25,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-25 04:10:25,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-25 04:10:25,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 458 [2023-08-25 04:10:25,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 286 flow. Second operand has 12 states, 12 states have (on average 237.25) internal successors, (2847), 12 states have internal predecessors, (2847), 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) [2023-08-25 04:10:25,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:25,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 458 [2023-08-25 04:10:25,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:10:25,236 INFO L124 PetriNetUnfolderBase]: 528/1856 cut-off events. [2023-08-25 04:10:25,236 INFO L125 PetriNetUnfolderBase]: For 23/28 co-relation queries the response was YES. [2023-08-25 04:10:25,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2898 conditions, 1856 events. 528/1856 cut-off events. For 23/28 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13142 event pairs, 437 based on Foata normal form. 6/1635 useless extension candidates. Maximal degree in co-relation 2840. Up to 990 conditions per place. [2023-08-25 04:10:25,242 INFO L140 encePairwiseOnDemand]: 455/458 looper letters, 49 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2023-08-25 04:10:25,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 127 transitions, 442 flow [2023-08-25 04:10:25,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 04:10:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 04:10:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2898 transitions. [2023-08-25 04:10:25,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527292576419214 [2023-08-25 04:10:25,247 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2898 transitions. [2023-08-25 04:10:25,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2898 transitions. [2023-08-25 04:10:25,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:10:25,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2898 transitions. [2023-08-25 04:10:25,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.5) internal successors, (2898), 12 states have internal predecessors, (2898), 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) [2023-08-25 04:10:25,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 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) [2023-08-25 04:10:25,260 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 458.0) internal successors, (5954), 13 states have internal predecessors, (5954), 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) [2023-08-25 04:10:25,260 INFO L175 Difference]: Start difference. First operand has 124 places, 121 transitions, 286 flow. Second operand 12 states and 2898 transitions. [2023-08-25 04:10:25,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 127 transitions, 442 flow [2023-08-25 04:10:25,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 127 transitions, 428 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 04:10:25,265 INFO L231 Difference]: Finished difference. Result has 140 places, 127 transitions, 356 flow [2023-08-25 04:10:25,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=356, PETRI_PLACES=140, PETRI_TRANSITIONS=127} [2023-08-25 04:10:25,266 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 26 predicate places. [2023-08-25 04:10:25,266 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 127 transitions, 356 flow [2023-08-25 04:10:25,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 237.25) internal successors, (2847), 12 states have internal predecessors, (2847), 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) [2023-08-25 04:10:25,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:25,268 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-25 04:10:25,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 04:10:25,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-25 04:10:25,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 04:10:25,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:25,473 INFO L85 PathProgramCache]: Analyzing trace with hash 449398792, now seen corresponding path program 3 times [2023-08-25 04:10:25,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:25,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024212591] [2023-08-25 04:10:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:25,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:25,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:10:25,506 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:10:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:10:25,545 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:10:25,545 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:10:25,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (14 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 20 remaining) [2023-08-25 04:10:25,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 20 remaining) [2023-08-25 04:10:25,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 04:10:25,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 04:10:25,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 20 remaining) [2023-08-25 04:10:25,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 04:10:25,551 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-25 04:10:25,553 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:10:25,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-25 04:10:25,593 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 04:10:25,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 386 transitions, 790 flow [2023-08-25 04:10:25,668 INFO L124 PetriNetUnfolderBase]: 87/671 cut-off events. [2023-08-25 04:10:25,668 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:10:25,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 671 events. 87/671 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3598 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 406. Up to 12 conditions per place. [2023-08-25 04:10:25,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 340 places, 386 transitions, 790 flow [2023-08-25 04:10:25,680 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 340 places, 386 transitions, 790 flow [2023-08-25 04:10:25,680 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:10:25,680 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 340 places, 386 transitions, 790 flow [2023-08-25 04:10:25,681 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 340 places, 386 transitions, 790 flow [2023-08-25 04:10:25,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 340 places, 386 transitions, 790 flow [2023-08-25 04:10:25,738 INFO L124 PetriNetUnfolderBase]: 87/671 cut-off events. [2023-08-25 04:10:25,740 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-25 04:10:25,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 671 events. 87/671 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3598 event pairs, 0 based on Foata normal form. 0/546 useless extension candidates. Maximal degree in co-relation 406. Up to 12 conditions per place. [2023-08-25 04:10:25,770 INFO L119 LiptonReduction]: Number of co-enabled transitions 82176 [2023-08-25 04:10:28,701 INFO L134 LiptonReduction]: Checked pairs total: 314313 [2023-08-25 04:10:28,701 INFO L136 LiptonReduction]: Total number of compositions: 240 [2023-08-25 04:10:28,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:10:28,703 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@19a572dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:10:28,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-25 04:10:28,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:10:28,706 INFO L124 PetriNetUnfolderBase]: 13/65 cut-off events. [2023-08-25 04:10:28,706 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:10:28,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:28,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:10:28,706 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:10:28,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:28,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1309888463, now seen corresponding path program 1 times [2023-08-25 04:10:28,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:28,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000683243] [2023-08-25 04:10:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:28,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:10:28,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:28,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000683243] [2023-08-25 04:10:28,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000683243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:10:28,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:10:28,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:10:28,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349317933] [2023-08-25 04:10:28,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:10:28,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:10:28,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:28,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:10:28,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:10:28,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 626 [2023-08-25 04:10:28,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 202 transitions, 422 flow. Second operand has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 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) [2023-08-25 04:10:28,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:28,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 626 [2023-08-25 04:10:28,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:10:31,868 INFO L124 PetriNetUnfolderBase]: 21133/47889 cut-off events. [2023-08-25 04:10:31,868 INFO L125 PetriNetUnfolderBase]: For 188/262 co-relation queries the response was YES. [2023-08-25 04:10:31,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78044 conditions, 47889 events. 21133/47889 cut-off events. For 188/262 co-relation queries the response was YES. Maximal size of possible extension queue 1255. Compared 521453 event pairs, 18392 based on Foata normal form. 4575/45825 useless extension candidates. Maximal degree in co-relation 33362. Up to 30031 conditions per place. [2023-08-25 04:10:32,092 INFO L140 encePairwiseOnDemand]: 592/626 looper letters, 71 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2023-08-25 04:10:32,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 172 transitions, 508 flow [2023-08-25 04:10:32,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:10:32,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:10:32,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1092 transitions. [2023-08-25 04:10:32,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5814696485623003 [2023-08-25 04:10:32,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1092 transitions. [2023-08-25 04:10:32,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1092 transitions. [2023-08-25 04:10:32,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:10:32,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1092 transitions. [2023-08-25 04:10:32,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 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) [2023-08-25 04:10:32,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2023-08-25 04:10:32,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2023-08-25 04:10:32,101 INFO L175 Difference]: Start difference. First operand has 167 places, 202 transitions, 422 flow. Second operand 3 states and 1092 transitions. [2023-08-25 04:10:32,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 172 transitions, 508 flow [2023-08-25 04:10:32,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 172 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 04:10:32,105 INFO L231 Difference]: Finished difference. Result has 170 places, 172 transitions, 372 flow [2023-08-25 04:10:32,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=170, PETRI_TRANSITIONS=172} [2023-08-25 04:10:32,107 INFO L281 CegarLoopForPetriNet]: 167 programPoint places, 3 predicate places. [2023-08-25 04:10:32,107 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 172 transitions, 372 flow [2023-08-25 04:10:32,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 330.6666666666667) internal successors, (992), 3 states have internal predecessors, (992), 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) [2023-08-25 04:10:32,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:32,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:10:32,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 04:10:32,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:10:32,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:32,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1235880474, now seen corresponding path program 1 times [2023-08-25 04:10:32,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:32,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003815053] [2023-08-25 04:10:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:32,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:10:32,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:32,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003815053] [2023-08-25 04:10:32,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003815053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:10:32,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172027872] [2023-08-25 04:10:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:32,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:32,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:10:32,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:10:32,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 04:10:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:32,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-25 04:10:32,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:10:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 04:10:32,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 04:10:32,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172027872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:10:32,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 04:10:32,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-25 04:10:32,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395940463] [2023-08-25 04:10:32,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:10:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:10:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:32,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:10:32,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 04:10:32,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 626 [2023-08-25 04:10:32,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 172 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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) [2023-08-25 04:10:32,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:32,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 626 [2023-08-25 04:10:32,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:10:35,384 INFO L124 PetriNetUnfolderBase]: 20708/46996 cut-off events. [2023-08-25 04:10:35,384 INFO L125 PetriNetUnfolderBase]: For 166/313 co-relation queries the response was YES. [2023-08-25 04:10:35,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77162 conditions, 46996 events. 20708/46996 cut-off events. For 166/313 co-relation queries the response was YES. Maximal size of possible extension queue 1195. Compared 513969 event pairs, 8816 based on Foata normal form. 0/40571 useless extension candidates. Maximal degree in co-relation 77149. Up to 29989 conditions per place. [2023-08-25 04:10:35,590 INFO L140 encePairwiseOnDemand]: 623/626 looper letters, 93 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2023-08-25 04:10:35,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 194 transitions, 606 flow [2023-08-25 04:10:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 04:10:35,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 04:10:35,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-08-25 04:10:35,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5761448349307774 [2023-08-25 04:10:35,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-08-25 04:10:35,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-08-25 04:10:35,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:10:35,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-08-25 04:10:35,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 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) [2023-08-25 04:10:35,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2023-08-25 04:10:35,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 626.0) internal successors, (2504), 4 states have internal predecessors, (2504), 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) [2023-08-25 04:10:35,599 INFO L175 Difference]: Start difference. First operand has 170 places, 172 transitions, 372 flow. Second operand 3 states and 1082 transitions. [2023-08-25 04:10:35,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 194 transitions, 606 flow [2023-08-25 04:10:35,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 194 transitions, 602 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-25 04:10:35,604 INFO L231 Difference]: Finished difference. Result has 172 places, 173 transitions, 380 flow [2023-08-25 04:10:35,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=172, PETRI_TRANSITIONS=173} [2023-08-25 04:10:35,606 INFO L281 CegarLoopForPetriNet]: 167 programPoint places, 5 predicate places. [2023-08-25 04:10:35,606 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 173 transitions, 380 flow [2023-08-25 04:10:35,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.0) internal successors, (993), 3 states have internal predecessors, (993), 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) [2023-08-25 04:10:35,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:35,607 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-25 04:10:35,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 04:10:35,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:35,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:10:35,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash -940189739, now seen corresponding path program 1 times [2023-08-25 04:10:35,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:35,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613877242] [2023-08-25 04:10:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:35,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:35,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:10:35,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613877242] [2023-08-25 04:10:35,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613877242] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:10:35,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954562349] [2023-08-25 04:10:35,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:35,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:35,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:10:35,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:10:35,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 04:10:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:35,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-25 04:10:35,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:10:35,924 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:10:35,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:10:35,935 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:10:35,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954562349] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:10:35,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:10:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-25 04:10:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438436289] [2023-08-25 04:10:35,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:10:35,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 04:10:35,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:35,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 04:10:35,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-25 04:10:35,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 626 [2023-08-25 04:10:35,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 173 transitions, 380 flow. Second operand has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 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) [2023-08-25 04:10:35,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:35,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 626 [2023-08-25 04:10:35,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:10:39,209 INFO L124 PetriNetUnfolderBase]: 21168/48260 cut-off events. [2023-08-25 04:10:39,210 INFO L125 PetriNetUnfolderBase]: For 1029/1113 co-relation queries the response was YES. [2023-08-25 04:10:39,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79268 conditions, 48260 events. 21168/48260 cut-off events. For 1029/1113 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 527779 event pairs, 18392 based on Foata normal form. 3/41928 useless extension candidates. Maximal degree in co-relation 79240. Up to 30011 conditions per place. [2023-08-25 04:10:39,401 INFO L140 encePairwiseOnDemand]: 623/626 looper letters, 72 selfloop transitions, 5 changer transitions 0/176 dead transitions. [2023-08-25 04:10:39,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 546 flow [2023-08-25 04:10:39,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 04:10:39,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 04:10:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2053 transitions. [2023-08-25 04:10:39,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5465921192758253 [2023-08-25 04:10:39,410 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2053 transitions. [2023-08-25 04:10:39,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2053 transitions. [2023-08-25 04:10:39,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:10:39,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2053 transitions. [2023-08-25 04:10:39,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.1666666666667) internal successors, (2053), 6 states have internal predecessors, (2053), 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) [2023-08-25 04:10:39,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 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) [2023-08-25 04:10:39,418 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 626.0) internal successors, (4382), 7 states have internal predecessors, (4382), 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) [2023-08-25 04:10:39,418 INFO L175 Difference]: Start difference. First operand has 172 places, 173 transitions, 380 flow. Second operand 6 states and 2053 transitions. [2023-08-25 04:10:39,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 546 flow [2023-08-25 04:10:39,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 176 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 04:10:39,421 INFO L231 Difference]: Finished difference. Result has 179 places, 176 transitions, 414 flow [2023-08-25 04:10:39,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=179, PETRI_TRANSITIONS=176} [2023-08-25 04:10:39,422 INFO L281 CegarLoopForPetriNet]: 167 programPoint places, 12 predicate places. [2023-08-25 04:10:39,422 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 176 transitions, 414 flow [2023-08-25 04:10:39,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 330.7142857142857) internal successors, (2315), 7 states have internal predecessors, (2315), 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) [2023-08-25 04:10:39,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:39,423 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-25 04:10:39,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 04:10:39,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:39,630 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:10:39,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:39,630 INFO L85 PathProgramCache]: Analyzing trace with hash 611072318, now seen corresponding path program 2 times [2023-08-25 04:10:39,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:39,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155166075] [2023-08-25 04:10:39,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:39,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:10:39,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:39,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155166075] [2023-08-25 04:10:39,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155166075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 04:10:39,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090044061] [2023-08-25 04:10:39,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 04:10:39,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:39,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 04:10:39,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 04:10:39,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 04:10:39,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 04:10:39,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 04:10:39,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 04:10:39,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 04:10:39,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:10:39,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 04:10:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-25 04:10:39,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090044061] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 04:10:39,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 04:10:39,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-25 04:10:39,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346638354] [2023-08-25 04:10:39,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 04:10:39,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 04:10:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:39,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 04:10:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-25 04:10:39,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 626 [2023-08-25 04:10:39,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 176 transitions, 414 flow. Second operand has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 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) [2023-08-25 04:10:39,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:39,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 626 [2023-08-25 04:10:39,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 04:10:43,249 INFO L124 PetriNetUnfolderBase]: 21168/48266 cut-off events. [2023-08-25 04:10:43,249 INFO L125 PetriNetUnfolderBase]: For 1063/1147 co-relation queries the response was YES. [2023-08-25 04:10:43,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79287 conditions, 48266 events. 21168/48266 cut-off events. For 1063/1147 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 527395 event pairs, 18392 based on Foata normal form. 6/41937 useless extension candidates. Maximal degree in co-relation 79227. Up to 30011 conditions per place. [2023-08-25 04:10:43,457 INFO L140 encePairwiseOnDemand]: 623/626 looper letters, 72 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2023-08-25 04:10:43,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 182 transitions, 616 flow [2023-08-25 04:10:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 04:10:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 04:10:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4036 transitions. [2023-08-25 04:10:43,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372736954206603 [2023-08-25 04:10:43,463 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4036 transitions. [2023-08-25 04:10:43,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4036 transitions. [2023-08-25 04:10:43,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 04:10:43,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4036 transitions. [2023-08-25 04:10:43,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 336.3333333333333) internal successors, (4036), 12 states have internal predecessors, (4036), 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) [2023-08-25 04:10:43,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 626.0) internal successors, (8138), 13 states have internal predecessors, (8138), 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) [2023-08-25 04:10:43,477 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 626.0) internal successors, (8138), 13 states have internal predecessors, (8138), 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) [2023-08-25 04:10:43,477 INFO L175 Difference]: Start difference. First operand has 179 places, 176 transitions, 414 flow. Second operand 12 states and 4036 transitions. [2023-08-25 04:10:43,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 182 transitions, 616 flow [2023-08-25 04:10:43,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 182 transitions, 602 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-25 04:10:43,481 INFO L231 Difference]: Finished difference. Result has 195 places, 182 transitions, 484 flow [2023-08-25 04:10:43,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=626, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=484, PETRI_PLACES=195, PETRI_TRANSITIONS=182} [2023-08-25 04:10:43,481 INFO L281 CegarLoopForPetriNet]: 167 programPoint places, 28 predicate places. [2023-08-25 04:10:43,481 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 182 transitions, 484 flow [2023-08-25 04:10:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 330.38461538461536) internal successors, (4295), 13 states have internal predecessors, (4295), 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) [2023-08-25 04:10:43,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:43,483 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-08-25 04:10:43,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 04:10:43,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 04:10:43,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 04:10:43,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:43,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1286217250, now seen corresponding path program 3 times [2023-08-25 04:10:43,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:43,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415364303] [2023-08-25 04:10:43,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:43,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:43,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:10:43,700 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-25 04:10:43,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-25 04:10:43,712 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-25 04:10:43,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-25 04:10:43,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 26 remaining) [2023-08-25 04:10:43,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 26 remaining) [2023-08-25 04:10:43,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (23 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (22 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (21 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (20 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (19 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (16 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (15 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (14 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (13 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (12 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (11 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (9 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (8 of 26 remaining) [2023-08-25 04:10:43,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (7 of 26 remaining) [2023-08-25 04:10:43,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (6 of 26 remaining) [2023-08-25 04:10:43,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (5 of 26 remaining) [2023-08-25 04:10:43,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 26 remaining) [2023-08-25 04:10:43,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 26 remaining) [2023-08-25 04:10:43,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONASSERT (2 of 26 remaining) [2023-08-25 04:10:43,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 26 remaining) [2023-08-25 04:10:43,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 26 remaining) [2023-08-25 04:10:43,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 04:10:43,714 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-08-25 04:10:43,715 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-25 04:10:43,715 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-25 04:10:43,745 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 04:10:43,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 495 transitions, 1020 flow [2023-08-25 04:10:43,850 INFO L124 PetriNetUnfolderBase]: 127/983 cut-off events. [2023-08-25 04:10:43,850 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:10:43,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 983 events. 127/983 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5826 event pairs, 1 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 679. Up to 16 conditions per place. [2023-08-25 04:10:43,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 435 places, 495 transitions, 1020 flow [2023-08-25 04:10:43,875 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 435 places, 495 transitions, 1020 flow [2023-08-25 04:10:43,875 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 04:10:43,875 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 435 places, 495 transitions, 1020 flow [2023-08-25 04:10:43,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 435 places, 495 transitions, 1020 flow [2023-08-25 04:10:43,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 435 places, 495 transitions, 1020 flow [2023-08-25 04:10:43,977 INFO L124 PetriNetUnfolderBase]: 127/983 cut-off events. [2023-08-25 04:10:43,977 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-25 04:10:43,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 983 events. 127/983 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5826 event pairs, 1 based on Foata normal form. 0/802 useless extension candidates. Maximal degree in co-relation 679. Up to 16 conditions per place. [2023-08-25 04:10:44,040 INFO L119 LiptonReduction]: Number of co-enabled transitions 158574 [2023-08-25 04:10:47,381 INFO L134 LiptonReduction]: Checked pairs total: 618225 [2023-08-25 04:10:47,381 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-25 04:10:47,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 04:10:47,383 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@19a572dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 04:10:47,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-08-25 04:10:47,385 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 04:10:47,385 INFO L124 PetriNetUnfolderBase]: 15/72 cut-off events. [2023-08-25 04:10:47,386 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 04:10:47,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 04:10:47,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 04:10:47,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2023-08-25 04:10:47,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 04:10:47,386 INFO L85 PathProgramCache]: Analyzing trace with hash 661900069, now seen corresponding path program 1 times [2023-08-25 04:10:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 04:10:47,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461478260] [2023-08-25 04:10:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 04:10:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 04:10:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 04:10:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 04:10:47,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 04:10:47,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461478260] [2023-08-25 04:10:47,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461478260] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 04:10:47,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 04:10:47,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 04:10:47,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941053998] [2023-08-25 04:10:47,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 04:10:47,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 04:10:47,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 04:10:47,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 04:10:47,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 04:10:47,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 804 [2023-08-25 04:10:47,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 266 transitions, 562 flow. Second operand has 3 states, 3 states have (on average 423.6666666666667) internal successors, (1271), 3 states have internal predecessors, (1271), 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) [2023-08-25 04:10:47,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 04:10:47,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 804 [2023-08-25 04:10:47,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand