./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 21:06:13,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 21:06:13,886 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-01-09 21:06:13,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 21:06:13,890 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 21:06:13,907 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 21:06:13,908 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 21:06:13,908 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 21:06:13,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 21:06:13,908 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 21:06:13,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 21:06:13,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 21:06:13,909 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 21:06:13,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 21:06:13,910 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 21:06:13,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:06:13,911 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:06:13,911 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 21:06:13,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 21:06:13,912 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 21:06:13,912 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 21:06:13,912 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-jdk21/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 -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2025-01-09 21:06:14,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 21:06:14,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 21:06:14,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 21:06:14,145 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 21:06:14,146 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 21:06:14,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-01-09 21:06:15,313 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a99142ceb/c72cdd909c044723bdad454069819117/FLAG747f519e7 [2025-01-09 21:06:15,589 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 21:06:15,590 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-01-09 21:06:15,607 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a99142ceb/c72cdd909c044723bdad454069819117/FLAG747f519e7 [2025-01-09 21:06:15,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a99142ceb/c72cdd909c044723bdad454069819117 [2025-01-09 21:06:15,624 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 21:06:15,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 21:06:15,627 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 21:06:15,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 21:06:15,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 21:06:15,632 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:15,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340f9b2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15, skipping insertion in model container [2025-01-09 21:06:15,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:15,663 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 21:06:15,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:06:15,928 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 21:06:15,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 21:06:15,999 INFO L204 MainTranslator]: Completed translation [2025-01-09 21:06:16,001 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15 WrapperNode [2025-01-09 21:06:16,001 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 21:06:16,002 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 21:06:16,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 21:06:16,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 21:06:16,009 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,030 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 69 [2025-01-09 21:06:16,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 21:06:16,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 21:06:16,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 21:06:16,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 21:06:16,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,045 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,052 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,054 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,059 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 21:06:16,060 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 21:06:16,060 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 21:06:16,060 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 21:06:16,061 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (1/1) ... [2025-01-09 21:06:16,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 21:06:16,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 21:06:16,090 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 21:06:16,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 21:06:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-01-09 21:06:16,113 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-01-09 21:06:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 21:06:16,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-01-09 21:06:16,114 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 21:06:16,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 21:06:16,115 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-01-09 21:06:16,208 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 21:06:16,209 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 21:06:16,312 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-01-09 21:06:16,312 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 21:06:16,351 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 21:06:16,351 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 21:06:16,351 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:06:16 BoogieIcfgContainer [2025-01-09 21:06:16,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 21:06:16,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 21:06:16,353 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 21:06:16,356 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 21:06:16,356 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 09:06:15" (1/3) ... [2025-01-09 21:06:16,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a71f9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:06:16, skipping insertion in model container [2025-01-09 21:06:16,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 09:06:15" (2/3) ... [2025-01-09 21:06:16,357 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a71f9bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 09:06:16, skipping insertion in model container [2025-01-09 21:06:16,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 09:06:16" (3/3) ... [2025-01-09 21:06:16,358 INFO L128 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2025-01-09 21:06:16,368 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 21:06:16,369 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 29_conditionals_vs.i that has 2 procedures, 52 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2025-01-09 21:06:16,369 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-01-09 21:06:16,402 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:16,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 118 flow [2025-01-09 21:06:16,464 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2025-01-09 21:06:16,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:06:16,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2025-01-09 21:06:16,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 118 flow [2025-01-09 21:06:16,473 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 57 transitions, 118 flow [2025-01-09 21:06:16,479 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:16,487 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:16,487 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-01-09 21:06:16,496 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:16,497 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-01-09 21:06:16,497 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-01-09 21:06:16,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:16,498 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:16,498 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-01-09 21:06:16,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:16,502 INFO L85 PathProgramCache]: Analyzing trace with hash -203469313, now seen corresponding path program 1 times [2025-01-09 21:06:16,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:16,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850956988] [2025-01-09 21:06:16,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:16,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:16,567 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 21:06:16,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 21:06:16,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:16,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:16,579 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:16,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-01-09 21:06:16,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-01-09 21:06:16,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:16,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:16,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:16,606 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:16,607 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-01-09 21:06:16,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-01-09 21:06:16,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-01-09 21:06:16,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-01-09 21:06:16,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-01-09 21:06:16,608 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-01-09 21:06:16,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-01-09 21:06:16,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-01-09 21:06:16,609 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-01-09 21:06:16,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 21:06:16,610 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 21:06:16,613 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:16,613 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-01-09 21:06:16,653 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:16,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 94 transitions, 198 flow [2025-01-09 21:06:16,691 INFO L124 PetriNetUnfolderBase]: 10/110 cut-off events. [2025-01-09 21:06:16,691 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 21:06:16,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 110 events. 10/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 206 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2025-01-09 21:06:16,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 94 transitions, 198 flow [2025-01-09 21:06:16,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 94 transitions, 198 flow [2025-01-09 21:06:16,700 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:16,701 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:16,701 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-01-09 21:06:16,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:16,714 INFO L124 PetriNetUnfolderBase]: 0/55 cut-off events. [2025-01-09 21:06:16,714 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-01-09 21:06:16,714 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:16,714 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:16,714 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-01-09 21:06:16,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2124119679, now seen corresponding path program 1 times [2025-01-09 21:06:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695379407] [2025-01-09 21:06:16,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:16,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 21:06:16,740 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 21:06:16,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:16,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:16,741 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:16,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-01-09 21:06:16,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 21:06:16,749 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:16,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:16,752 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:16,753 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-01-09 21:06:16,753 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-01-09 21:06:16,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-01-09 21:06:16,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-01-09 21:06:16,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-01-09 21:06:16,754 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-01-09 21:06:16,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 21:06:16,754 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 21:06:16,755 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:16,755 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-01-09 21:06:16,789 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:16,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 280 flow [2025-01-09 21:06:16,823 INFO L124 PetriNetUnfolderBase]: 15/156 cut-off events. [2025-01-09 21:06:16,823 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-01-09 21:06:16,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 15/156 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 411 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2025-01-09 21:06:16,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 131 transitions, 280 flow [2025-01-09 21:06:16,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 131 transitions, 280 flow [2025-01-09 21:06:16,827 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:16,828 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:16,828 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-01-09 21:06:16,833 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:16,833 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-01-09 21:06:16,833 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:06:16,833 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:16,833 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] [2025-01-09 21:06:16,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-01-09 21:06:16,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1571801009, now seen corresponding path program 1 times [2025-01-09 21:06:16,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:16,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719700985] [2025-01-09 21:06:16,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:16,849 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 21:06:16,857 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 21:06:16,857 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:16,857 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:06:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:06:16,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:06:16,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719700985] [2025-01-09 21:06:16,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719700985] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:06:16,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:06:16,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:06:16,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449960042] [2025-01-09 21:06:16,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:06:16,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:06:16,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:06:16,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:06:16,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:06:16,937 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 131 [2025-01-09 21:06:16,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2025-01-09 21:06:16,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:06:16,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 131 [2025-01-09 21:06:16,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:06:17,028 INFO L124 PetriNetUnfolderBase]: 81/506 cut-off events. [2025-01-09 21:06:17,029 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-01-09 21:06:17,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 506 events. 81/506 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2641 event pairs, 42 based on Foata normal form. 104/553 useless extension candidates. Maximal degree in co-relation 184. Up to 82 conditions per place. [2025-01-09 21:06:17,037 INFO L140 encePairwiseOnDemand]: 112/131 looper letters, 9 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2025-01-09 21:06:17,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 242 flow [2025-01-09 21:06:17,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:06:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:06:17,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 228 transitions. [2025-01-09 21:06:17,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2025-01-09 21:06:17,047 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 280 flow. Second operand 2 states and 228 transitions. [2025-01-09 21:06:17,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 242 flow [2025-01-09 21:06:17,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 240 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-01-09 21:06:17,053 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 222 flow [2025-01-09 21:06:17,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2025-01-09 21:06:17,057 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, -21 predicate places. [2025-01-09 21:06:17,057 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 222 flow [2025-01-09 21:06:17,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 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) [2025-01-09 21:06:17,057 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:17,057 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:17,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 21:06:17,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-01-09 21:06:17,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:17,058 INFO L85 PathProgramCache]: Analyzing trace with hash 317859468, now seen corresponding path program 1 times [2025-01-09 21:06:17,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:17,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940099394] [2025-01-09 21:06:17,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:17,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:17,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 21:06:17,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 21:06:17,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:17,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:17,082 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:17,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-01-09 21:06:17,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-01-09 21:06:17,093 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:17,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:17,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:17,096 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-01-09 21:06:17,096 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-01-09 21:06:17,097 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-01-09 21:06:17,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 21:06:17,097 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 21:06:17,097 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:17,097 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-01-09 21:06:17,126 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:17,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 168 transitions, 364 flow [2025-01-09 21:06:17,151 INFO L124 PetriNetUnfolderBase]: 20/202 cut-off events. [2025-01-09 21:06:17,151 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-01-09 21:06:17,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 202 events. 20/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 603 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 164. Up to 5 conditions per place. [2025-01-09 21:06:17,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 168 transitions, 364 flow [2025-01-09 21:06:17,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 168 transitions, 364 flow [2025-01-09 21:06:17,157 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:17,158 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:17,159 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-01-09 21:06:17,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:17,163 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-01-09 21:06:17,164 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:06:17,164 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:17,164 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] [2025-01-09 21:06:17,164 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-01-09 21:06:17,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:17,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1954338521, now seen corresponding path program 1 times [2025-01-09 21:06:17,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:17,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612834889] [2025-01-09 21:06:17,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:17,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:17,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 21:06:17,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 21:06:17,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:17,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:06:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:06:17,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:06:17,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612834889] [2025-01-09 21:06:17,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612834889] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:06:17,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:06:17,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:06:17,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543144743] [2025-01-09 21:06:17,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:06:17,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:06:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:06:17,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:06:17,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:06:17,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 168 [2025-01-09 21:06:17,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 168 transitions, 364 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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) [2025-01-09 21:06:17,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:06:17,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 168 [2025-01-09 21:06:17,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:06:17,433 INFO L124 PetriNetUnfolderBase]: 324/1604 cut-off events. [2025-01-09 21:06:17,434 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2025-01-09 21:06:17,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1604 events. 324/1604 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11934 event pairs, 204 based on Foata normal form. 392/1819 useless extension candidates. Maximal degree in co-relation 639. Up to 325 conditions per place. [2025-01-09 21:06:17,444 INFO L140 encePairwiseOnDemand]: 143/168 looper letters, 12 selfloop transitions, 0 changer transitions 0/132 dead transitions. [2025-01-09 21:06:17,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 316 flow [2025-01-09 21:06:17,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:06:17,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:06:17,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2025-01-09 21:06:17,446 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2025-01-09 21:06:17,446 INFO L175 Difference]: Start difference. First operand has 157 places, 168 transitions, 364 flow. Second operand 2 states and 291 transitions. [2025-01-09 21:06:17,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 316 flow [2025-01-09 21:06:17,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 132 transitions, 310 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-01-09 21:06:17,449 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 286 flow [2025-01-09 21:06:17,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=286, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2025-01-09 21:06:17,450 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, -27 predicate places. [2025-01-09 21:06:17,450 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 286 flow [2025-01-09 21:06:17,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 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) [2025-01-09 21:06:17,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:17,450 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:17,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 21:06:17,451 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-01-09 21:06:17,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:17,451 INFO L85 PathProgramCache]: Analyzing trace with hash 168171776, now seen corresponding path program 1 times [2025-01-09 21:06:17,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:17,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192471879] [2025-01-09 21:06:17,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:17,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:17,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 21:06:17,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 21:06:17,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:17,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:17,465 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:17,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 21:06:17,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 21:06:17,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:17,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:17,487 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:17,487 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:17,487 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-01-09 21:06:17,487 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-01-09 21:06:17,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-01-09 21:06:17,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-01-09 21:06:17,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-01-09 21:06:17,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-01-09 21:06:17,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-01-09 21:06:17,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-01-09 21:06:17,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-01-09 21:06:17,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 21:06:17,489 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 21:06:17,490 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:17,490 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-01-09 21:06:17,520 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:17,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 205 transitions, 450 flow [2025-01-09 21:06:17,541 INFO L124 PetriNetUnfolderBase]: 25/248 cut-off events. [2025-01-09 21:06:17,542 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-01-09 21:06:17,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 248 events. 25/248 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 807 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 215. Up to 6 conditions per place. [2025-01-09 21:06:17,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 205 transitions, 450 flow [2025-01-09 21:06:17,546 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 205 transitions, 450 flow [2025-01-09 21:06:17,546 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:17,547 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:17,547 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-01-09 21:06:17,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:17,550 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-01-09 21:06:17,550 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:06:17,550 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:17,550 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] [2025-01-09 21:06:17,550 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-01-09 21:06:17,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:17,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1058925634, now seen corresponding path program 1 times [2025-01-09 21:06:17,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:17,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585247454] [2025-01-09 21:06:17,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:17,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:17,556 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 21:06:17,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 21:06:17,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:17,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:06:17,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:06:17,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:06:17,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585247454] [2025-01-09 21:06:17,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585247454] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:06:17,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:06:17,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:06:17,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604642208] [2025-01-09 21:06:17,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:06:17,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:06:17,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:06:17,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:06:17,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:06:17,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 205 [2025-01-09 21:06:17,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2025-01-09 21:06:17,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:06:17,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 205 [2025-01-09 21:06:17,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:06:18,188 INFO L124 PetriNetUnfolderBase]: 1215/5060 cut-off events. [2025-01-09 21:06:18,188 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2025-01-09 21:06:18,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 5060 events. 1215/5060 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 48238 event pairs, 852 based on Foata normal form. 1418/5941 useless extension candidates. Maximal degree in co-relation 2142. Up to 1216 conditions per place. [2025-01-09 21:06:18,248 INFO L140 encePairwiseOnDemand]: 174/205 looper letters, 15 selfloop transitions, 0 changer transitions 0/161 dead transitions. [2025-01-09 21:06:18,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 392 flow [2025-01-09 21:06:18,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:06:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:06:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 354 transitions. [2025-01-09 21:06:18,251 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8634146341463415 [2025-01-09 21:06:18,251 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 450 flow. Second operand 2 states and 354 transitions. [2025-01-09 21:06:18,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 392 flow [2025-01-09 21:06:18,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 380 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-01-09 21:06:18,257 INFO L231 Difference]: Finished difference. Result has 158 places, 161 transitions, 350 flow [2025-01-09 21:06:18,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=158, PETRI_TRANSITIONS=161} [2025-01-09 21:06:18,258 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, -33 predicate places. [2025-01-09 21:06:18,258 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 161 transitions, 350 flow [2025-01-09 21:06:18,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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) [2025-01-09 21:06:18,259 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:18,259 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:18,259 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-01-09 21:06:18,259 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-01-09 21:06:18,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash 2135053501, now seen corresponding path program 1 times [2025-01-09 21:06:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493470203] [2025-01-09 21:06:18,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:18,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:18,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 21:06:18,272 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 21:06:18,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:18,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:18,272 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:18,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-01-09 21:06:18,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-01-09 21:06:18,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:18,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:18,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:18,292 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-01-09 21:06:18,292 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-01-09 21:06:18,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-01-09 21:06:18,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-01-09 21:06:18,293 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 21:06:18,294 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:18,294 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-01-09 21:06:18,382 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:18,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 242 transitions, 538 flow [2025-01-09 21:06:18,409 INFO L124 PetriNetUnfolderBase]: 30/294 cut-off events. [2025-01-09 21:06:18,409 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-01-09 21:06:18,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 294 events. 30/294 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 993 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2025-01-09 21:06:18,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 242 transitions, 538 flow [2025-01-09 21:06:18,415 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 242 transitions, 538 flow [2025-01-09 21:06:18,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:18,416 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:18,416 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-01-09 21:06:18,419 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:18,420 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-01-09 21:06:18,420 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:06:18,420 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:18,420 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] [2025-01-09 21:06:18,420 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-01-09 21:06:18,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1878912460, now seen corresponding path program 1 times [2025-01-09 21:06:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488456164] [2025-01-09 21:06:18,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:18,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 21:06:18,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 21:06:18,428 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:18,428 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:06:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:06:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:06:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488456164] [2025-01-09 21:06:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488456164] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:06:18,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:06:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:06:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852165855] [2025-01-09 21:06:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:06:18,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:06:18,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:06:18,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:06:18,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:06:18,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 242 [2025-01-09 21:06:18,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 242 transitions, 538 flow. Second operand has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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) [2025-01-09 21:06:18,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:06:18,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 242 [2025-01-09 21:06:18,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:06:20,306 INFO L124 PetriNetUnfolderBase]: 4374/15914 cut-off events. [2025-01-09 21:06:20,307 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2025-01-09 21:06:20,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22665 conditions, 15914 events. 4374/15914 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 181194 event pairs, 3282 based on Foata normal form. 4982/19279 useless extension candidates. Maximal degree in co-relation 7056. Up to 4375 conditions per place. [2025-01-09 21:06:20,493 INFO L140 encePairwiseOnDemand]: 205/242 looper letters, 18 selfloop transitions, 0 changer transitions 0/190 dead transitions. [2025-01-09 21:06:20,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 470 flow [2025-01-09 21:06:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:06:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:06:20,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 417 transitions. [2025-01-09 21:06:20,560 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8615702479338843 [2025-01-09 21:06:20,560 INFO L175 Difference]: Start difference. First operand has 225 places, 242 transitions, 538 flow. Second operand 2 states and 417 transitions. [2025-01-09 21:06:20,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 470 flow [2025-01-09 21:06:20,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 450 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-01-09 21:06:20,573 INFO L231 Difference]: Finished difference. Result has 186 places, 190 transitions, 414 flow [2025-01-09 21:06:20,573 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=186, PETRI_TRANSITIONS=190} [2025-01-09 21:06:20,575 INFO L279 CegarLoopForPetriNet]: 225 programPoint places, -39 predicate places. [2025-01-09 21:06:20,575 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 190 transitions, 414 flow [2025-01-09 21:06:20,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 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) [2025-01-09 21:06:20,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:20,575 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:20,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 21:06:20,575 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-01-09 21:06:20,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1612909149, now seen corresponding path program 1 times [2025-01-09 21:06:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387939355] [2025-01-09 21:06:20,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:20,585 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-09 21:06:20,593 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 21:06:20,594 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:20,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:20,594 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:20,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-01-09 21:06:20,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 21:06:20,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:20,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:20,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:20,617 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2025-01-09 21:06:20,617 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2025-01-09 21:06:20,618 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2025-01-09 21:06:20,618 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2025-01-09 21:06:20,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2025-01-09 21:06:20,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2025-01-09 21:06:20,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2025-01-09 21:06:20,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2025-01-09 21:06:20,620 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2025-01-09 21:06:20,621 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2025-01-09 21:06:20,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 21:06:20,621 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 21:06:20,622 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:20,622 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2025-01-09 21:06:20,659 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:20,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 279 transitions, 628 flow [2025-01-09 21:06:20,690 INFO L124 PetriNetUnfolderBase]: 35/340 cut-off events. [2025-01-09 21:06:20,691 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-01-09 21:06:20,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 340 events. 35/340 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1201 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2025-01-09 21:06:20,696 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 279 transitions, 628 flow [2025-01-09 21:06:20,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 279 transitions, 628 flow [2025-01-09 21:06:20,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:20,703 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:20,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-01-09 21:06:20,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:20,705 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-01-09 21:06:20,705 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:06:20,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:20,705 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] [2025-01-09 21:06:20,705 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:06:20,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:20,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1612402869, now seen corresponding path program 1 times [2025-01-09 21:06:20,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:20,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880253095] [2025-01-09 21:06:20,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:20,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:20,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 21:06:20,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 21:06:20,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:20,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:06:20,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:06:20,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:06:20,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880253095] [2025-01-09 21:06:20,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880253095] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:06:20,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:06:20,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:06:20,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125504600] [2025-01-09 21:06:20,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:06:20,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:06:20,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:06:20,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:06:20,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:06:20,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 279 [2025-01-09 21:06:20,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 279 transitions, 628 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2025-01-09 21:06:20,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:06:20,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 279 [2025-01-09 21:06:20,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:06:27,213 INFO L124 PetriNetUnfolderBase]: 15309/49934 cut-off events. [2025-01-09 21:06:27,214 INFO L125 PetriNetUnfolderBase]: For 42373/42373 co-relation queries the response was YES. [2025-01-09 21:06:27,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73453 conditions, 49934 events. 15309/49934 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 653415 event pairs, 12030 based on Foata normal form. 17132/62209 useless extension candidates. Maximal degree in co-relation 23013. Up to 15310 conditions per place. [2025-01-09 21:06:28,030 INFO L140 encePairwiseOnDemand]: 236/279 looper letters, 21 selfloop transitions, 0 changer transitions 0/219 dead transitions. [2025-01-09 21:06:28,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 219 transitions, 550 flow [2025-01-09 21:06:28,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:06:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:06:28,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2025-01-09 21:06:28,032 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2025-01-09 21:06:28,032 INFO L175 Difference]: Start difference. First operand has 259 places, 279 transitions, 628 flow. Second operand 2 states and 480 transitions. [2025-01-09 21:06:28,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 219 transitions, 550 flow [2025-01-09 21:06:28,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 520 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-01-09 21:06:28,050 INFO L231 Difference]: Finished difference. Result has 214 places, 219 transitions, 478 flow [2025-01-09 21:06:28,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=214, PETRI_TRANSITIONS=219} [2025-01-09 21:06:28,051 INFO L279 CegarLoopForPetriNet]: 259 programPoint places, -45 predicate places. [2025-01-09 21:06:28,051 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 219 transitions, 478 flow [2025-01-09 21:06:28,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 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) [2025-01-09 21:06:28,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:28,051 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:28,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-01-09 21:06:28,052 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-01-09 21:06:28,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:28,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1854945170, now seen corresponding path program 1 times [2025-01-09 21:06:28,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:28,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269812285] [2025-01-09 21:06:28,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:28,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:28,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-09 21:06:28,068 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-09 21:06:28,068 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:28,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:28,068 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:28,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-01-09 21:06:28,079 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-01-09 21:06:28,079 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:28,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:28,092 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:28,092 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-01-09 21:06:28,092 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-01-09 21:06:28,093 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-01-09 21:06:28,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-01-09 21:06:28,093 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 21:06:28,096 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:28,096 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2025-01-09 21:06:28,129 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:28,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 316 transitions, 720 flow [2025-01-09 21:06:28,158 INFO L124 PetriNetUnfolderBase]: 40/386 cut-off events. [2025-01-09 21:06:28,159 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-01-09 21:06:28,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 386 events. 40/386 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1388 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 374. Up to 9 conditions per place. [2025-01-09 21:06:28,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 316 transitions, 720 flow [2025-01-09 21:06:28,166 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 316 transitions, 720 flow [2025-01-09 21:06:28,167 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:28,167 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:28,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-01-09 21:06:28,169 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:28,169 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-01-09 21:06:28,169 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:06:28,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:28,169 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] [2025-01-09 21:06:28,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-01-09 21:06:28,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash -666554597, now seen corresponding path program 1 times [2025-01-09 21:06:28,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:28,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457231398] [2025-01-09 21:06:28,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:28,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:28,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 21:06:28,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 21:06:28,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:28,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:06:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:06:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:06:28,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457231398] [2025-01-09 21:06:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457231398] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:06:28,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:06:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:06:28,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176388434] [2025-01-09 21:06:28,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:06:28,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:06:28,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:06:28,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:06:28,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:06:28,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 316 [2025-01-09 21:06:28,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 316 transitions, 720 flow. Second operand has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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) [2025-01-09 21:06:28,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:06:28,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 316 [2025-01-09 21:06:28,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-01-09 21:06:52,018 INFO L124 PetriNetUnfolderBase]: 52488/156368 cut-off events. [2025-01-09 21:06:52,018 INFO L125 PetriNetUnfolderBase]: For 167032/167032 co-relation queries the response was YES. [2025-01-09 21:06:54,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236750 conditions, 156368 events. 52488/156368 cut-off events. For 167032/167032 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 2278677 event pairs, 42648 based on Foata normal form. 57956/199747 useless extension candidates. Maximal degree in co-relation 74529. Up to 52489 conditions per place. [2025-01-09 21:06:55,769 INFO L140 encePairwiseOnDemand]: 267/316 looper letters, 24 selfloop transitions, 0 changer transitions 0/248 dead transitions. [2025-01-09 21:06:55,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 248 transitions, 632 flow [2025-01-09 21:06:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 21:06:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-01-09 21:06:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 543 transitions. [2025-01-09 21:06:55,771 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8591772151898734 [2025-01-09 21:06:55,771 INFO L175 Difference]: Start difference. First operand has 293 places, 316 transitions, 720 flow. Second operand 2 states and 543 transitions. [2025-01-09 21:06:55,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 248 transitions, 632 flow [2025-01-09 21:06:55,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 248 transitions, 590 flow, removed 21 selfloop flow, removed 0 redundant places. [2025-01-09 21:06:55,980 INFO L231 Difference]: Finished difference. Result has 242 places, 248 transitions, 542 flow [2025-01-09 21:06:55,980 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=242, PETRI_TRANSITIONS=248} [2025-01-09 21:06:55,981 INFO L279 CegarLoopForPetriNet]: 293 programPoint places, -51 predicate places. [2025-01-09 21:06:55,981 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 248 transitions, 542 flow [2025-01-09 21:06:55,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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) [2025-01-09 21:06:55,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:55,981 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 21:06:55,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-01-09 21:06:55,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-01-09 21:06:55,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash -2012580246, now seen corresponding path program 1 times [2025-01-09 21:06:55,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:55,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528993355] [2025-01-09 21:06:55,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:55,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:55,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-09 21:06:55,996 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-09 21:06:55,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:55,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:55,996 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 21:06:56,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-01-09 21:06:56,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-01-09 21:06:56,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:56,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 21:06:56,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 21:06:56,021 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2025-01-09 21:06:56,021 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2025-01-09 21:06:56,022 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2025-01-09 21:06:56,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2025-01-09 21:06:56,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2025-01-09 21:06:56,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2025-01-09 21:06:56,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2025-01-09 21:06:56,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2025-01-09 21:06:56,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2025-01-09 21:06:56,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-01-09 21:06:56,024 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 21:06:56,025 WARN L246 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2025-01-09 21:06:56,025 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2025-01-09 21:06:56,070 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-01-09 21:06:56,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 353 transitions, 814 flow [2025-01-09 21:06:56,126 INFO L124 PetriNetUnfolderBase]: 45/432 cut-off events. [2025-01-09 21:06:56,126 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2025-01-09 21:06:56,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 432 events. 45/432 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1597 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 430. Up to 10 conditions per place. [2025-01-09 21:06:56,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 353 transitions, 814 flow [2025-01-09 21:06:56,137 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 353 transitions, 814 flow [2025-01-09 21:06:56,138 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 21:06:56,141 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;@7b6d8911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 21:06:56,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-01-09 21:06:56,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-01-09 21:06:56,144 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-01-09 21:06:56,144 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-01-09 21:06:56,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-01-09 21:06:56,144 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] [2025-01-09 21:06:56,144 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2025-01-09 21:06:56,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 21:06:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash -593276912, now seen corresponding path program 1 times [2025-01-09 21:06:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 21:06:56,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831908620] [2025-01-09 21:06:56,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 21:06:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 21:06:56,152 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 21:06:56,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 21:06:56,156 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 21:06:56,156 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 21:06:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 21:06:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 21:06:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831908620] [2025-01-09 21:06:56,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831908620] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 21:06:56,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 21:06:56,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-01-09 21:06:56,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549490945] [2025-01-09 21:06:56,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 21:06:56,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 21:06:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 21:06:56,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 21:06:56,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 21:06:56,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 353 [2025-01-09 21:06:56,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 353 transitions, 814 flow. Second operand has 2 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 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) [2025-01-09 21:06:56,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-01-09 21:06:56,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 353 [2025-01-09 21:06:56,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand