./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:02:30,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:02:30,667 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 11:02:30,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:02:30,676 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:02:30,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:02:30,700 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:02:30,701 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:02:30,701 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:02:30,701 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:02:30,702 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:02:30,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:02:30,703 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:02:30,703 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:02:30,703 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:02:30,703 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:02:30,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 11:02:30,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:02:30,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:02:30,704 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:02:30,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:02:30,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:02:30,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:02:30,705 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 11:02:30,705 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 11:02:30,705 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 11:02:30,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 11:02:30,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:02:30,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:02:30,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:02:30,706 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:02:30,706 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16b049fb81e05ec2192b5dc6cabf7c8b89c1486d4e623332a0a01a89383c6c7d [2025-03-17 11:02:30,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:02:30,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:02:30,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:02:30,943 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:02:30,943 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:02:30,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i [2025-03-17 11:02:32,090 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292624767/db257e3f9e3a43c183252a3432e64090/FLAG2cc1d4e22 [2025-03-17 11:02:32,394 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:02:32,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/one_time_barrier_2t.i [2025-03-17 11:02:32,411 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292624767/db257e3f9e3a43c183252a3432e64090/FLAG2cc1d4e22 [2025-03-17 11:02:32,427 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/292624767/db257e3f9e3a43c183252a3432e64090 [2025-03-17 11:02:32,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:02:32,430 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:02:32,432 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:02:32,432 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:02:32,436 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:02:32,437 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,438 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54905833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32, skipping insertion in model container [2025-03-17 11:02:32,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,470 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:02:32,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:02:32,712 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 11:02:32,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:02:32,789 INFO L204 MainTranslator]: Completed translation [2025-03-17 11:02:32,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32 WrapperNode [2025-03-17 11:02:32,790 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:02:32,791 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 11:02:32,791 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 11:02:32,791 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 11:02:32,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,844 INFO L138 Inliner]: procedures = 174, calls = 86, calls flagged for inlining = 20, calls inlined = 35, statements flattened = 841 [2025-03-17 11:02:32,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 11:02:32,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 11:02:32,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 11:02:32,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 11:02:32,851 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,851 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,888 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,891 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,897 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 11:02:32,903 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 11:02:32,903 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 11:02:32,903 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 11:02:32,904 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (1/1) ... [2025-03-17 11:02:32,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:02:32,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:02:32,933 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 11:02:32,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 11:02:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 11:02:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 11:02:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 11:02:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure worker_fn [2025-03-17 11:02:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure worker_fn [2025-03-17 11:02:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 11:02:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2025-03-17 11:02:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 11:02:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2025-03-17 11:02:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 11:02:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 11:02:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 11:02:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 11:02:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 11:02:32,958 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 11:02:33,092 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 11:02:33,094 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 11:02:34,064 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 11:02:34,064 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 11:02:34,117 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 11:02:34,117 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 11:02:34,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:02:34 BoogieIcfgContainer [2025-03-17 11:02:34,117 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 11:02:34,123 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 11:02:34,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 11:02:34,127 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 11:02:34,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:02:32" (1/3) ... [2025-03-17 11:02:34,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235307f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:02:34, skipping insertion in model container [2025-03-17 11:02:34,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:32" (2/3) ... [2025-03-17 11:02:34,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235307f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:02:34, skipping insertion in model container [2025-03-17 11:02:34,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:02:34" (3/3) ... [2025-03-17 11:02:34,130 INFO L128 eAbstractionObserver]: Analyzing ICFG one_time_barrier_2t.i [2025-03-17 11:02:34,140 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 11:02:34,141 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG one_time_barrier_2t.i that has 2 procedures, 941 locations, 1 initial locations, 16 loop locations, and 77 error locations. [2025-03-17 11:02:34,141 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 11:02:34,294 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 11:02:34,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 944 places, 1018 transitions, 2043 flow [2025-03-17 11:02:34,825 INFO L124 PetriNetUnfolderBase]: 116/1509 cut-off events. [2025-03-17 11:02:34,828 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:02:34,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1514 conditions, 1509 events. 116/1509 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 5685 event pairs, 0 based on Foata normal form. 0/1275 useless extension candidates. Maximal degree in co-relation 913. Up to 4 conditions per place. [2025-03-17 11:02:34,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 944 places, 1018 transitions, 2043 flow [2025-03-17 11:02:34,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 944 places, 1018 transitions, 2043 flow [2025-03-17 11:02:34,905 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:02:34,914 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@713c546f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:02:34,914 INFO L334 AbstractCegarLoop]: Starting to check reachability of 112 error locations. [2025-03-17 11:02:34,923 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:02:34,923 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2025-03-17 11:02:34,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:02:34,923 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:34,925 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:02:34,925 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2025-03-17 11:02:34,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash -262048128, now seen corresponding path program 1 times [2025-03-17 11:02:34,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:34,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911177572] [2025-03-17 11:02:34,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:34,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:35,011 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-17 11:02:35,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-17 11:02:35,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:35,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:35,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:35,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911177572] [2025-03-17 11:02:35,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911177572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:35,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:35,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:35,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419315809] [2025-03-17 11:02:35,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:35,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:35,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:35,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:35,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:36,925 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 1018 [2025-03-17 11:02:36,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 944 places, 1018 transitions, 2043 flow. Second operand has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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) [2025-03-17 11:02:36,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:36,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 1018 [2025-03-17 11:02:36,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:45,240 INFO L124 PetriNetUnfolderBase]: 12711/59452 cut-off events. [2025-03-17 11:02:45,240 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-03-17 11:02:45,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82853 conditions, 59452 events. 12711/59452 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 692096 event pairs, 11413 based on Foata normal form. 5886/58170 useless extension candidates. Maximal degree in co-relation 82164. Up to 23391 conditions per place. [2025-03-17 11:02:45,456 INFO L140 encePairwiseOnDemand]: 954/1018 looper letters, 231 selfloop transitions, 5 changer transitions 3/932 dead transitions. [2025-03-17 11:02:45,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 932 transitions, 2343 flow [2025-03-17 11:02:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:45,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4633 transitions. [2025-03-17 11:02:45,474 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.758513425016372 [2025-03-17 11:02:45,475 INFO L175 Difference]: Start difference. First operand has 944 places, 1018 transitions, 2043 flow. Second operand 6 states and 4633 transitions. [2025-03-17 11:02:45,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 932 transitions, 2343 flow [2025-03-17 11:02:45,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 932 transitions, 2343 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:02:45,496 INFO L231 Difference]: Finished difference. Result has 921 places, 929 transitions, 1875 flow [2025-03-17 11:02:45,499 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1018, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1875, PETRI_PLACES=921, PETRI_TRANSITIONS=929} [2025-03-17 11:02:45,503 INFO L279 CegarLoopForPetriNet]: 944 programPoint places, -23 predicate places. [2025-03-17 11:02:45,504 INFO L471 AbstractCegarLoop]: Abstraction has has 921 places, 929 transitions, 1875 flow [2025-03-17 11:02:45,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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) [2025-03-17 11:02:45,506 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:45,507 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:02:45,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 11:02:45,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2025-03-17 11:02:45,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1045394602, now seen corresponding path program 1 times [2025-03-17 11:02:45,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:45,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677156127] [2025-03-17 11:02:45,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:45,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:45,523 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-17 11:02:45,530 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-17 11:02:45,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:45,531 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:45,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:45,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677156127] [2025-03-17 11:02:45,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677156127] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:45,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:45,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 11:02:45,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680970544] [2025-03-17 11:02:45,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:45,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:02:45,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:45,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:02:45,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:02:45,596 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 932 out of 1018 [2025-03-17 11:02:45,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 929 transitions, 1875 flow. Second operand has 3 states, 3 states have (on average 933.3333333333334) internal successors, (2800), 3 states have internal predecessors, (2800), 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) [2025-03-17 11:02:45,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:45,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 932 of 1018 [2025-03-17 11:02:45,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:46,285 INFO L124 PetriNetUnfolderBase]: 247/4793 cut-off events. [2025-03-17 11:02:46,285 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 11:02:46,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5116 conditions, 4793 events. 247/4793 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 36310 event pairs, 110 based on Foata normal form. 1/4134 useless extension candidates. Maximal degree in co-relation 5032. Up to 306 conditions per place. [2025-03-17 11:02:46,314 INFO L140 encePairwiseOnDemand]: 1015/1018 looper letters, 27 selfloop transitions, 2 changer transitions 0/930 dead transitions. [2025-03-17 11:02:46,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 930 transitions, 1935 flow [2025-03-17 11:02:46,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:02:46,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:02:46,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2826 transitions. [2025-03-17 11:02:46,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.925343811394892 [2025-03-17 11:02:46,319 INFO L175 Difference]: Start difference. First operand has 921 places, 929 transitions, 1875 flow. Second operand 3 states and 2826 transitions. [2025-03-17 11:02:46,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 930 transitions, 1935 flow [2025-03-17 11:02:46,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 915 places, 930 transitions, 1925 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:02:46,330 INFO L231 Difference]: Finished difference. Result has 916 places, 930 transitions, 1877 flow [2025-03-17 11:02:46,332 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1018, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=927, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1877, PETRI_PLACES=916, PETRI_TRANSITIONS=930} [2025-03-17 11:02:46,332 INFO L279 CegarLoopForPetriNet]: 944 programPoint places, -28 predicate places. [2025-03-17 11:02:46,332 INFO L471 AbstractCegarLoop]: Abstraction has has 916 places, 930 transitions, 1877 flow [2025-03-17 11:02:46,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 933.3333333333334) internal successors, (2800), 3 states have internal predecessors, (2800), 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) [2025-03-17 11:02:46,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:46,334 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:02:46,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 11:02:46,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2025-03-17 11:02:46,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1770092488, now seen corresponding path program 1 times [2025-03-17 11:02:46,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:46,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869411163] [2025-03-17 11:02:46,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:46,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:46,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-03-17 11:02:46,359 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-03-17 11:02:46,359 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:46,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:46,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:46,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:46,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869411163] [2025-03-17 11:02:46,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869411163] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:46,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:46,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:46,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213272167] [2025-03-17 11:02:46,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:46,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:46,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:46,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:46,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:47,913 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 1018 [2025-03-17 11:02:47,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 930 transitions, 1877 flow. Second operand has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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) [2025-03-17 11:02:47,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:47,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 1018 [2025-03-17 11:02:47,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:55,433 INFO L124 PetriNetUnfolderBase]: 12711/59476 cut-off events. [2025-03-17 11:02:55,433 INFO L125 PetriNetUnfolderBase]: For 7/10 co-relation queries the response was YES. [2025-03-17 11:02:55,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82892 conditions, 59476 events. 12711/59476 cut-off events. For 7/10 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 692528 event pairs, 11413 based on Foata normal form. 0/52310 useless extension candidates. Maximal degree in co-relation 82813. Up to 23394 conditions per place. [2025-03-17 11:02:55,643 INFO L140 encePairwiseOnDemand]: 1012/1018 looper letters, 232 selfloop transitions, 5 changer transitions 0/929 dead transitions. [2025-03-17 11:02:55,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 929 transitions, 2349 flow [2025-03-17 11:02:55,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:55,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4575 transitions. [2025-03-17 11:02:55,650 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7490176817288802 [2025-03-17 11:02:55,650 INFO L175 Difference]: Start difference. First operand has 916 places, 930 transitions, 1877 flow. Second operand 6 states and 4575 transitions. [2025-03-17 11:02:55,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 929 transitions, 2349 flow [2025-03-17 11:02:55,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 929 transitions, 2347 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 11:02:55,661 INFO L231 Difference]: Finished difference. Result has 919 places, 929 transitions, 1883 flow [2025-03-17 11:02:55,662 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1018, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=914, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=929, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=924, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1883, PETRI_PLACES=919, PETRI_TRANSITIONS=929} [2025-03-17 11:02:55,663 INFO L279 CegarLoopForPetriNet]: 944 programPoint places, -25 predicate places. [2025-03-17 11:02:55,663 INFO L471 AbstractCegarLoop]: Abstraction has has 919 places, 929 transitions, 1883 flow [2025-03-17 11:02:55,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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) [2025-03-17 11:02:55,665 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:55,665 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:02:55,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 11:02:55,666 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2025-03-17 11:02:55,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:55,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1611328222, now seen corresponding path program 1 times [2025-03-17 11:02:55,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:55,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024544140] [2025-03-17 11:02:55,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:55,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:55,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-17 11:02:55,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-17 11:02:55,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:55,690 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:55,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:55,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:55,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024544140] [2025-03-17 11:02:55,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024544140] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:55,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:55,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:55,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963694909] [2025-03-17 11:02:55,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:55,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:55,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:55,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:55,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:56,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 1018 [2025-03-17 11:02:56,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 919 places, 929 transitions, 1883 flow. Second operand has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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) [2025-03-17 11:02:56,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:56,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 1018 [2025-03-17 11:02:56,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:03:04,893 INFO L124 PetriNetUnfolderBase]: 12711/59474 cut-off events. [2025-03-17 11:03:04,893 INFO L125 PetriNetUnfolderBase]: For 6/9 co-relation queries the response was YES. [2025-03-17 11:03:04,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82899 conditions, 59474 events. 12711/59474 cut-off events. For 6/9 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 692324 event pairs, 11413 based on Foata normal form. 0/52310 useless extension candidates. Maximal degree in co-relation 82806. Up to 23394 conditions per place. [2025-03-17 11:03:05,109 INFO L140 encePairwiseOnDemand]: 1012/1018 looper letters, 232 selfloop transitions, 5 changer transitions 0/928 dead transitions. [2025-03-17 11:03:05,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 923 places, 928 transitions, 2355 flow [2025-03-17 11:03:05,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:03:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:03:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4575 transitions. [2025-03-17 11:03:05,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7490176817288802 [2025-03-17 11:03:05,116 INFO L175 Difference]: Start difference. First operand has 919 places, 929 transitions, 1883 flow. Second operand 6 states and 4575 transitions. [2025-03-17 11:03:05,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 923 places, 928 transitions, 2355 flow [2025-03-17 11:03:05,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 918 places, 928 transitions, 2345 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:03:05,127 INFO L231 Difference]: Finished difference. Result has 918 places, 928 transitions, 1881 flow [2025-03-17 11:03:05,129 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1018, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1881, PETRI_PLACES=918, PETRI_TRANSITIONS=928} [2025-03-17 11:03:05,129 INFO L279 CegarLoopForPetriNet]: 944 programPoint places, -26 predicate places. [2025-03-17 11:03:05,129 INFO L471 AbstractCegarLoop]: Abstraction has has 918 places, 928 transitions, 1881 flow [2025-03-17 11:03:05,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 724.5) internal successors, (4347), 6 states have internal predecessors, (4347), 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) [2025-03-17 11:03:05,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:03:05,131 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:03:05,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 11:03:05,132 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2025-03-17 11:03:05,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:03:05,132 INFO L85 PathProgramCache]: Analyzing trace with hash -415064768, now seen corresponding path program 1 times [2025-03-17 11:03:05,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:03:05,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131967041] [2025-03-17 11:03:05,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:03:05,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:03:05,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 11:03:05,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 11:03:05,149 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:03:05,149 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:05,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:03:05,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:03:05,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131967041] [2025-03-17 11:03:05,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131967041] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 11:03:05,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206562963] [2025-03-17 11:03:05,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:03:05,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:03:05,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:03:05,197 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) [2025-03-17 11:03:05,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 11:03:05,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 74 statements into 1 equivalence classes. [2025-03-17 11:03:05,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 74 of 74 statements. [2025-03-17 11:03:05,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:03:05,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:05,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-17 11:03:05,294 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:03:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:03:05,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 11:03:05,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:03:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206562963] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 11:03:05,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 11:03:05,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2025-03-17 11:03:05,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853790515] [2025-03-17 11:03:05,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 11:03:05,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 11:03:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:03:05,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 11:03:05,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-17 11:03:05,627 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 931 out of 1018 [2025-03-17 11:03:05,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 928 transitions, 1881 flow. Second operand has 5 states, 5 states have (on average 932.8) internal successors, (4664), 5 states have internal predecessors, (4664), 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) [2025-03-17 11:03:05,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:03:05,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 931 of 1018 [2025-03-17 11:03:05,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:03:06,473 INFO L124 PetriNetUnfolderBase]: 247/4791 cut-off events. [2025-03-17 11:03:06,473 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-17 11:03:06,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5122 conditions, 4791 events. 247/4791 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 36245 event pairs, 110 based on Foata normal form. 1/4136 useless extension candidates. Maximal degree in co-relation 5015. Up to 305 conditions per place. [2025-03-17 11:03:06,510 INFO L140 encePairwiseOnDemand]: 1014/1018 looper letters, 28 selfloop transitions, 4 changer transitions 0/930 dead transitions. [2025-03-17 11:03:06,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 921 places, 930 transitions, 1949 flow [2025-03-17 11:03:06,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 11:03:06,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 11:03:06,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3757 transitions. [2025-03-17 11:03:06,516 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9226424361493124 [2025-03-17 11:03:06,516 INFO L175 Difference]: Start difference. First operand has 918 places, 928 transitions, 1881 flow. Second operand 4 states and 3757 transitions. [2025-03-17 11:03:06,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 921 places, 930 transitions, 1949 flow [2025-03-17 11:03:06,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 930 transitions, 1939 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:03:06,529 INFO L231 Difference]: Finished difference. Result has 918 places, 929 transitions, 1891 flow [2025-03-17 11:03:06,530 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1018, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=924, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1891, PETRI_PLACES=918, PETRI_TRANSITIONS=929} [2025-03-17 11:03:06,530 INFO L279 CegarLoopForPetriNet]: 944 programPoint places, -26 predicate places. [2025-03-17 11:03:06,530 INFO L471 AbstractCegarLoop]: Abstraction has has 918 places, 929 transitions, 1891 flow [2025-03-17 11:03:06,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 932.8) internal successors, (4664), 5 states have internal predecessors, (4664), 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) [2025-03-17 11:03:06,533 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:03:06,533 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:03:06,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 11:03:06,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:03:06,734 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2025-03-17 11:03:06,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:03:06,735 INFO L85 PathProgramCache]: Analyzing trace with hash 641312982, now seen corresponding path program 2 times [2025-03-17 11:03:06,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:03:06,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446218601] [2025-03-17 11:03:06,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 11:03:06,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:03:06,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 102 statements into 2 equivalence classes. [2025-03-17 11:03:06,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 46 of 102 statements. [2025-03-17 11:03:06,766 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 11:03:06,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:06,964 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-03-17 11:03:06,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:03:06,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446218601] [2025-03-17 11:03:06,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446218601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:03:06,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:03:06,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:03:06,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737536873] [2025-03-17 11:03:06,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:03:06,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:03:06,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:03:06,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:03:06,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:03:07,915 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 1018 [2025-03-17 11:03:07,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 929 transitions, 1891 flow. Second operand has 6 states, 6 states have (on average 726.3333333333334) internal successors, (4358), 6 states have internal predecessors, (4358), 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) [2025-03-17 11:03:07,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:03:07,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 1018 [2025-03-17 11:03:07,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:03:16,425 INFO L124 PetriNetUnfolderBase]: 12501/59027 cut-off events. [2025-03-17 11:03:16,426 INFO L125 PetriNetUnfolderBase]: For 13/16 co-relation queries the response was YES. [2025-03-17 11:03:16,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82051 conditions, 59027 events. 12501/59027 cut-off events. For 13/16 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 688456 event pairs, 11211 based on Foata normal form. 0/51923 useless extension candidates. Maximal degree in co-relation 81921. Up to 22997 conditions per place. [2025-03-17 11:03:16,647 INFO L140 encePairwiseOnDemand]: 1012/1018 looper letters, 231 selfloop transitions, 5 changer transitions 0/928 dead transitions. [2025-03-17 11:03:16,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 928 transitions, 2361 flow [2025-03-17 11:03:16,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:03:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:03:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4575 transitions. [2025-03-17 11:03:16,652 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7490176817288802 [2025-03-17 11:03:16,652 INFO L175 Difference]: Start difference. First operand has 918 places, 929 transitions, 1891 flow. Second operand 6 states and 4575 transitions. [2025-03-17 11:03:16,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 928 transitions, 2361 flow [2025-03-17 11:03:16,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 928 transitions, 2357 flow, removed 1 selfloop flow, removed 1 redundant places. [2025-03-17 11:03:16,663 INFO L231 Difference]: Finished difference. Result has 921 places, 928 transitions, 1895 flow [2025-03-17 11:03:16,664 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=1018, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=923, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1895, PETRI_PLACES=921, PETRI_TRANSITIONS=928} [2025-03-17 11:03:16,665 INFO L279 CegarLoopForPetriNet]: 944 programPoint places, -23 predicate places. [2025-03-17 11:03:16,665 INFO L471 AbstractCegarLoop]: Abstraction has has 921 places, 928 transitions, 1895 flow [2025-03-17 11:03:16,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 726.3333333333334) internal successors, (4358), 6 states have internal predecessors, (4358), 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) [2025-03-17 11:03:16,667 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:03:16,667 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:03:16,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 11:03:16,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr42ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr39ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr41ASSERT_VIOLATIONDATA_RACE (and 109 more)] === [2025-03-17 11:03:16,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:03:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2078243233, now seen corresponding path program 1 times [2025-03-17 11:03:16,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:03:16,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894339794] [2025-03-17 11:03:16,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:03:16,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:03:16,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-03-17 11:03:16,693 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-03-17 11:03:16,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:03:16,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-03-17 11:03:17,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:03:17,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894339794] [2025-03-17 11:03:17,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894339794] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:03:17,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:03:17,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:03:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742998940] [2025-03-17 11:03:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:03:17,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:03:17,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:03:17,076 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:03:17,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:03:17,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 723 out of 1018 [2025-03-17 11:03:17,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 928 transitions, 1895 flow. Second operand has 6 states, 6 states have (on average 726.3333333333334) internal successors, (4358), 6 states have internal predecessors, (4358), 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) [2025-03-17 11:03:17,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:03:17,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 723 of 1018 [2025-03-17 11:03:17,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand