./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 48c9605d 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/11_fmaxsymopt-zero.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 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 05:10:31,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 05:10:31,203 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-02-08 05:10:31,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 05:10:31,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 05:10:31,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 05:10:31,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 05:10:31,220 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 05:10:31,221 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 05:10:31,221 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 05:10:31,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 05:10:31,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 05:10:31,221 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 05:10:31,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 05:10:31,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 05:10:31,222 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 05:10:31,223 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:10:31,223 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 05:10:31,223 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 05:10:31,224 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 05:10:31,224 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 05:10:31,224 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 -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2025-02-08 05:10:31,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 05:10:31,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 05:10:31,441 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 05:10:31,442 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 05:10:31,442 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 05:10:31,443 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2025-02-08 05:10:32,589 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4b249116/f09e1c6aa7ca4eebbedfbfd769ee37e1/FLAG977f7cd70 [2025-02-08 05:10:32,908 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 05:10:32,910 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2025-02-08 05:10:32,922 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4b249116/f09e1c6aa7ca4eebbedfbfd769ee37e1/FLAG977f7cd70 [2025-02-08 05:10:33,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/c4b249116/f09e1c6aa7ca4eebbedfbfd769ee37e1 [2025-02-08 05:10:33,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 05:10:33,160 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 05:10:33,161 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 05:10:33,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 05:10:33,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 05:10:33,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e964d3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33, skipping insertion in model container [2025-02-08 05:10:33,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,198 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 05:10:33,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:10:33,442 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 05:10:33,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 05:10:33,489 INFO L204 MainTranslator]: Completed translation [2025-02-08 05:10:33,490 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33 WrapperNode [2025-02-08 05:10:33,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 05:10:33,491 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 05:10:33,491 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 05:10:33,491 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 05:10:33,495 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,514 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 87 [2025-02-08 05:10:33,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 05:10:33,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 05:10:33,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 05:10:33,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 05:10:33,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,523 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,524 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,527 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,528 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,529 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 05:10:33,531 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 05:10:33,531 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 05:10:33,531 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 05:10:33,532 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (1/1) ... [2025-02-08 05:10:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 05:10:33,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 05:10:33,562 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) [2025-02-08 05:10:33,566 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 [2025-02-08 05:10:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-02-08 05:10:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-02-08 05:10:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-02-08 05:10:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-02-08 05:10:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 05:10:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-02-08 05:10:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-02-08 05:10:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 05:10:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 05:10:33,582 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 05:10:33,716 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 05:10:33,717 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 05:10:33,895 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 05:10:33,897 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 05:10:33,908 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 05:10:33,908 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 05:10:33,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:10:33 BoogieIcfgContainer [2025-02-08 05:10:33,909 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 05:10:33,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 05:10:33,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 05:10:33,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 05:10:33,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 05:10:33" (1/3) ... [2025-02-08 05:10:33,913 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6c1d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:10:33, skipping insertion in model container [2025-02-08 05:10:33,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 05:10:33" (2/3) ... [2025-02-08 05:10:33,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6c1d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 05:10:33, skipping insertion in model container [2025-02-08 05:10:33,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 05:10:33" (3/3) ... [2025-02-08 05:10:33,914 INFO L128 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2025-02-08 05:10:33,926 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 05:10:33,927 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 11_fmaxsymopt-zero.i that has 2 procedures, 99 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-02-08 05:10:33,928 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 05:10:33,988 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 05:10:34,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 105 transitions, 214 flow [2025-02-08 05:10:34,059 INFO L124 PetriNetUnfolderBase]: 6/112 cut-off events. [2025-02-08 05:10:34,060 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 05:10:34,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 112 events. 6/112 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 133 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 78. Up to 2 conditions per place. [2025-02-08 05:10:34,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 105 transitions, 214 flow [2025-02-08 05:10:34,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 105 transitions, 214 flow [2025-02-08 05:10:34,078 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:10:34,085 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;@5395f376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:10:34,088 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-02-08 05:10:34,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 05:10:34,103 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2025-02-08 05:10:34,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 05:10:34,105 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:34,106 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:34,106 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-02-08 05:10:34,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:34,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1523143001, now seen corresponding path program 1 times [2025-02-08 05:10:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:34,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248925439] [2025-02-08 05:10:34,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:34,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:34,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 05:10:34,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 05:10:34,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:34,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:34,202 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 05:10:34,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 05:10:34,223 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 05:10:34,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:34,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:34,242 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 05:10:34,244 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 05:10:34,245 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-02-08 05:10:34,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-02-08 05:10:34,246 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-02-08 05:10:34,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-02-08 05:10:34,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-02-08 05:10:34,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-02-08 05:10:34,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-02-08 05:10:34,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-02-08 05:10:34,247 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-02-08 05:10:34,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 05:10:34,249 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-08 05:10:34,251 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 05:10:34,251 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-02-08 05:10:34,286 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 05:10:34,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 175 transitions, 360 flow [2025-02-08 05:10:34,334 INFO L124 PetriNetUnfolderBase]: 12/191 cut-off events. [2025-02-08 05:10:34,336 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 05:10:34,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 191 events. 12/191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 466 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 147. Up to 3 conditions per place. [2025-02-08 05:10:34,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 175 transitions, 360 flow [2025-02-08 05:10:34,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 175 transitions, 360 flow [2025-02-08 05:10:34,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:10:34,346 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;@5395f376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:10:34,349 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-02-08 05:10:34,363 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 05:10:34,363 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2025-02-08 05:10:34,363 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-02-08 05:10:34,363 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:34,363 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:34,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-02-08 05:10:34,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2142423563, now seen corresponding path program 1 times [2025-02-08 05:10:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617428613] [2025-02-08 05:10:34,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:34,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:34,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 05:10:34,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 05:10:34,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:34,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:34,403 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 05:10:34,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-02-08 05:10:34,442 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-02-08 05:10:34,442 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:34,442 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:34,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 05:10:34,447 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-02-08 05:10:34,447 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-02-08 05:10:34,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-02-08 05:10:34,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-02-08 05:10:34,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-02-08 05:10:34,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-02-08 05:10:34,448 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-02-08 05:10:34,448 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 05:10:34,448 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-08 05:10:34,448 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 05:10:34,448 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-02-08 05:10:34,502 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 05:10:34,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 245 transitions, 508 flow [2025-02-08 05:10:34,540 INFO L124 PetriNetUnfolderBase]: 18/270 cut-off events. [2025-02-08 05:10:34,540 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 05:10:34,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 270 events. 18/270 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 866 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 216. Up to 4 conditions per place. [2025-02-08 05:10:34,544 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 245 transitions, 508 flow [2025-02-08 05:10:34,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 245 transitions, 508 flow [2025-02-08 05:10:34,548 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:10:34,548 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;@5395f376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:10:34,548 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-02-08 05:10:34,558 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 05:10:34,558 INFO L124 PetriNetUnfolderBase]: 2/99 cut-off events. [2025-02-08 05:10:34,558 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-02-08 05:10:34,558 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:34,558 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:34,558 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-02-08 05:10:34,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:34,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1354595840, now seen corresponding path program 1 times [2025-02-08 05:10:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:34,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807623384] [2025-02-08 05:10:34,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:34,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 05:10:34,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 05:10:34,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:34,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:34,588 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 05:10:34,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-08 05:10:34,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 05:10:34,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:34,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:34,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 05:10:34,614 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-02-08 05:10:34,614 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-02-08 05:10:34,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-02-08 05:10:34,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-02-08 05:10:34,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-02-08 05:10:34,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-02-08 05:10:34,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-02-08 05:10:34,615 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-02-08 05:10:34,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 05:10:34,615 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-08 05:10:34,615 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 05:10:34,615 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-02-08 05:10:34,666 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 05:10:34,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 315 transitions, 658 flow [2025-02-08 05:10:34,735 INFO L124 PetriNetUnfolderBase]: 24/349 cut-off events. [2025-02-08 05:10:34,735 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-02-08 05:10:34,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 349 events. 24/349 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1297 event pairs, 0 based on Foata normal form. 0/300 useless extension candidates. Maximal degree in co-relation 285. Up to 5 conditions per place. [2025-02-08 05:10:34,738 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 315 transitions, 658 flow [2025-02-08 05:10:34,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 315 transitions, 658 flow [2025-02-08 05:10:34,741 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:10:34,742 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;@5395f376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:10:34,742 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-02-08 05:10:34,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 05:10:34,753 INFO L124 PetriNetUnfolderBase]: 3/133 cut-off events. [2025-02-08 05:10:34,753 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2025-02-08 05:10:34,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:34,753 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:34,754 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-02-08 05:10:34,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:34,754 INFO L85 PathProgramCache]: Analyzing trace with hash 602140385, now seen corresponding path program 1 times [2025-02-08 05:10:34,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:34,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068954717] [2025-02-08 05:10:34,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:34,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:34,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 05:10:34,787 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 05:10:34,787 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:34,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:10:34,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:10:34,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:10:34,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068954717] [2025-02-08 05:10:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068954717] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:10:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:10:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 05:10:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244217561] [2025-02-08 05:10:34,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:10:34,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:10:34,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:10:34,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:10:34,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:10:34,951 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 315 [2025-02-08 05:10:34,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 315 transitions, 658 flow. Second operand has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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) [2025-02-08 05:10:34,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 05:10:34,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 315 [2025-02-08 05:10:34,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 05:10:36,041 INFO L124 PetriNetUnfolderBase]: 1063/6627 cut-off events. [2025-02-08 05:10:36,041 INFO L125 PetriNetUnfolderBase]: For 1363/1363 co-relation queries the response was YES. [2025-02-08 05:10:36,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8446 conditions, 6627 events. 1063/6627 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 70665 event pairs, 690 based on Foata normal form. 1471/7111 useless extension candidates. Maximal degree in co-relation 2189. Up to 1091 conditions per place. [2025-02-08 05:10:36,132 INFO L140 encePairwiseOnDemand]: 299/315 looper letters, 27 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2025-02-08 05:10:36,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 301 transitions, 709 flow [2025-02-08 05:10:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:10:36,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 05:10:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 890 transitions. [2025-02-08 05:10:36,143 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9417989417989417 [2025-02-08 05:10:36,144 INFO L175 Difference]: Start difference. First operand has 300 places, 315 transitions, 658 flow. Second operand 3 states and 890 transitions. [2025-02-08 05:10:36,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 301 transitions, 709 flow [2025-02-08 05:10:36,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 301 transitions, 697 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-02-08 05:10:36,157 INFO L231 Difference]: Finished difference. Result has 291 places, 292 transitions, 616 flow [2025-02-08 05:10:36,159 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=315, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=616, PETRI_PLACES=291, PETRI_TRANSITIONS=292} [2025-02-08 05:10:36,161 INFO L279 CegarLoopForPetriNet]: 300 programPoint places, -9 predicate places. [2025-02-08 05:10:36,161 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 292 transitions, 616 flow [2025-02-08 05:10:36,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 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) [2025-02-08 05:10:36,162 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:36,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:36,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 05:10:36,163 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-02-08 05:10:36,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:36,163 INFO L85 PathProgramCache]: Analyzing trace with hash 744188870, now seen corresponding path program 1 times [2025-02-08 05:10:36,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:36,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436050285] [2025-02-08 05:10:36,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:36,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:36,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 05:10:36,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 05:10:36,187 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:36,187 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:36,187 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 05:10:36,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-08 05:10:36,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-08 05:10:36,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:36,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:36,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 05:10:36,207 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 05:10:36,207 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-02-08 05:10:36,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-02-08 05:10:36,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-02-08 05:10:36,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-02-08 05:10:36,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-02-08 05:10:36,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-02-08 05:10:36,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-02-08 05:10:36,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-02-08 05:10:36,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 05:10:36,209 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-02-08 05:10:36,209 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 05:10:36,209 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-02-08 05:10:36,296 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 05:10:36,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 385 transitions, 810 flow [2025-02-08 05:10:36,336 INFO L124 PetriNetUnfolderBase]: 30/428 cut-off events. [2025-02-08 05:10:36,336 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-02-08 05:10:36,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 428 events. 30/428 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1756 event pairs, 0 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 362. Up to 6 conditions per place. [2025-02-08 05:10:36,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 366 places, 385 transitions, 810 flow [2025-02-08 05:10:36,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 385 transitions, 810 flow [2025-02-08 05:10:36,343 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:10:36,344 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;@5395f376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:10:36,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-02-08 05:10:36,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 05:10:36,351 INFO L124 PetriNetUnfolderBase]: 3/138 cut-off events. [2025-02-08 05:10:36,351 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 05:10:36,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:36,351 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:36,351 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-02-08 05:10:36,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2059212503, now seen corresponding path program 1 times [2025-02-08 05:10:36,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:36,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692180907] [2025-02-08 05:10:36,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:36,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:36,362 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 05:10:36,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 05:10:36,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:36,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:10:36,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:10:36,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:10:36,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692180907] [2025-02-08 05:10:36,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692180907] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:10:36,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:10:36,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 05:10:36,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374793878] [2025-02-08 05:10:36,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:10:36,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:10:36,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:10:36,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:10:36,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:10:36,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 385 [2025-02-08 05:10:36,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 385 transitions, 810 flow. Second operand has 3 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 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) [2025-02-08 05:10:36,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 05:10:36,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 385 [2025-02-08 05:10:36,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 05:10:39,628 INFO L124 PetriNetUnfolderBase]: 4114/23355 cut-off events. [2025-02-08 05:10:39,628 INFO L125 PetriNetUnfolderBase]: For 6661/6661 co-relation queries the response was YES. [2025-02-08 05:10:39,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30035 conditions, 23355 events. 4114/23355 cut-off events. For 6661/6661 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 309971 event pairs, 2796 based on Foata normal form. 5578/25543 useless extension candidates. Maximal degree in co-relation 8398. Up to 4007 conditions per place. [2025-02-08 05:10:40,071 INFO L140 encePairwiseOnDemand]: 366/385 looper letters, 33 selfloop transitions, 2 changer transitions 0/369 dead transitions. [2025-02-08 05:10:40,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 369 transitions, 880 flow [2025-02-08 05:10:40,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:10:40,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 05:10:40,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1091 transitions. [2025-02-08 05:10:40,074 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9445887445887445 [2025-02-08 05:10:40,074 INFO L175 Difference]: Start difference. First operand has 366 places, 385 transitions, 810 flow. Second operand 3 states and 1091 transitions. [2025-02-08 05:10:40,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 369 transitions, 880 flow [2025-02-08 05:10:40,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 369 transitions, 856 flow, removed 12 selfloop flow, removed 0 redundant places. [2025-02-08 05:10:40,083 INFO L231 Difference]: Finished difference. Result has 355 places, 357 transitions, 752 flow [2025-02-08 05:10:40,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=752, PETRI_PLACES=355, PETRI_TRANSITIONS=357} [2025-02-08 05:10:40,084 INFO L279 CegarLoopForPetriNet]: 366 programPoint places, -11 predicate places. [2025-02-08 05:10:40,084 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 357 transitions, 752 flow [2025-02-08 05:10:40,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 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) [2025-02-08 05:10:40,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:40,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:40,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 05:10:40,085 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-02-08 05:10:40,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1993750151, now seen corresponding path program 1 times [2025-02-08 05:10:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:40,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416762166] [2025-02-08 05:10:40,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:40,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 05:10:40,103 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 05:10:40,103 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:40,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:10:40,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:10:40,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:10:40,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416762166] [2025-02-08 05:10:40,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416762166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:10:40,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:10:40,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 05:10:40,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669212047] [2025-02-08 05:10:40,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:10:40,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 05:10:40,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:10:40,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 05:10:40,560 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 05:10:40,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 385 [2025-02-08 05:10:40,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 357 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 338.6666666666667) internal successors, (2032), 6 states have internal predecessors, (2032), 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) [2025-02-08 05:10:40,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 05:10:40,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 385 [2025-02-08 05:10:40,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 05:10:45,978 INFO L124 PetriNetUnfolderBase]: 7036/31681 cut-off events. [2025-02-08 05:10:45,978 INFO L125 PetriNetUnfolderBase]: For 4926/4926 co-relation queries the response was YES. [2025-02-08 05:10:46,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42349 conditions, 31681 events. 7036/31681 cut-off events. For 4926/4926 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 424623 event pairs, 2472 based on Foata normal form. 0/27599 useless extension candidates. Maximal degree in co-relation 21040. Up to 3563 conditions per place. [2025-02-08 05:10:46,458 INFO L140 encePairwiseOnDemand]: 379/385 looper letters, 69 selfloop transitions, 6 changer transitions 0/404 dead transitions. [2025-02-08 05:10:46,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 404 transitions, 1076 flow [2025-02-08 05:10:46,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 05:10:46,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 05:10:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2097 transitions. [2025-02-08 05:10:46,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9077922077922078 [2025-02-08 05:10:46,463 INFO L175 Difference]: Start difference. First operand has 355 places, 357 transitions, 752 flow. Second operand 6 states and 2097 transitions. [2025-02-08 05:10:46,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 404 transitions, 1076 flow [2025-02-08 05:10:46,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 404 transitions, 1074 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-08 05:10:46,476 INFO L231 Difference]: Finished difference. Result has 358 places, 356 transitions, 760 flow [2025-02-08 05:10:46,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=760, PETRI_PLACES=358, PETRI_TRANSITIONS=356} [2025-02-08 05:10:46,477 INFO L279 CegarLoopForPetriNet]: 366 programPoint places, -8 predicate places. [2025-02-08 05:10:46,477 INFO L471 AbstractCegarLoop]: Abstraction has has 358 places, 356 transitions, 760 flow [2025-02-08 05:10:46,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 338.6666666666667) internal successors, (2032), 6 states have internal predecessors, (2032), 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) [2025-02-08 05:10:46,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:46,478 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:46,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 05:10:46,478 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-02-08 05:10:46,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:46,479 INFO L85 PathProgramCache]: Analyzing trace with hash -34851080, now seen corresponding path program 1 times [2025-02-08 05:10:46,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:46,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481291852] [2025-02-08 05:10:46,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:46,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:46,491 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-08 05:10:46,496 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 05:10:46,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:46,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:10:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:10:46,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:10:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481291852] [2025-02-08 05:10:46,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481291852] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:10:46,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:10:46,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 05:10:46,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783224183] [2025-02-08 05:10:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:10:46,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:10:46,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:10:46,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:10:46,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:10:46,547 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 342 out of 385 [2025-02-08 05:10:46,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 356 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 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) [2025-02-08 05:10:46,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 05:10:46,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 342 of 385 [2025-02-08 05:10:46,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 05:10:49,622 INFO L124 PetriNetUnfolderBase]: 3895/20160 cut-off events. [2025-02-08 05:10:49,622 INFO L125 PetriNetUnfolderBase]: For 2322/2322 co-relation queries the response was YES. [2025-02-08 05:10:49,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25800 conditions, 20160 events. 3895/20160 cut-off events. For 2322/2322 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 258974 event pairs, 2550 based on Foata normal form. 120/17356 useless extension candidates. Maximal degree in co-relation 25697. Up to 3994 conditions per place. [2025-02-08 05:10:49,935 INFO L140 encePairwiseOnDemand]: 382/385 looper letters, 32 selfloop transitions, 2 changer transitions 0/368 dead transitions. [2025-02-08 05:10:49,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 368 transitions, 867 flow [2025-02-08 05:10:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:10:49,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 05:10:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1061 transitions. [2025-02-08 05:10:49,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9186147186147187 [2025-02-08 05:10:49,940 INFO L175 Difference]: Start difference. First operand has 358 places, 356 transitions, 760 flow. Second operand 3 states and 1061 transitions. [2025-02-08 05:10:49,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 368 transitions, 867 flow [2025-02-08 05:10:49,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 368 transitions, 855 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-08 05:10:49,948 INFO L231 Difference]: Finished difference. Result has 356 places, 357 transitions, 760 flow [2025-02-08 05:10:49,948 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=385, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=356, PETRI_TRANSITIONS=357} [2025-02-08 05:10:49,949 INFO L279 CegarLoopForPetriNet]: 366 programPoint places, -10 predicate places. [2025-02-08 05:10:49,949 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 357 transitions, 760 flow [2025-02-08 05:10:49,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 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) [2025-02-08 05:10:49,949 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:49,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:49,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 05:10:49,950 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-02-08 05:10:49,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:49,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1416033123, now seen corresponding path program 1 times [2025-02-08 05:10:49,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:49,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318913674] [2025-02-08 05:10:49,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:49,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:49,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 05:10:49,961 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 05:10:49,962 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:49,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:49,962 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-08 05:10:49,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 05:10:49,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 05:10:49,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:49,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-08 05:10:49,974 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-08 05:10:49,974 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-08 05:10:49,974 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-02-08 05:10:49,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-02-08 05:10:49,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-02-08 05:10:49,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-02-08 05:10:49,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-02-08 05:10:49,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-02-08 05:10:49,974 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-02-08 05:10:49,975 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-02-08 05:10:49,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-02-08 05:10:49,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-02-08 05:10:49,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-02-08 05:10:49,976 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-02-08 05:10:49,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 05:10:49,976 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-02-08 05:10:49,976 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-02-08 05:10:49,976 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-02-08 05:10:50,030 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 05:10:50,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 455 transitions, 964 flow [2025-02-08 05:10:50,109 INFO L124 PetriNetUnfolderBase]: 36/507 cut-off events. [2025-02-08 05:10:50,109 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-02-08 05:10:50,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541 conditions, 507 events. 36/507 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2217 event pairs, 0 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 447. Up to 7 conditions per place. [2025-02-08 05:10:50,118 INFO L82 GeneralOperation]: Start removeDead. Operand has 432 places, 455 transitions, 964 flow [2025-02-08 05:10:50,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 455 transitions, 964 flow [2025-02-08 05:10:50,127 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 05:10:50,127 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;@5395f376, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 05:10:50,128 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-02-08 05:10:50,136 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 05:10:50,136 INFO L124 PetriNetUnfolderBase]: 3/138 cut-off events. [2025-02-08 05:10:50,136 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-02-08 05:10:50,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:10:50,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:10:50,137 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-02-08 05:10:50,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:10:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1159907250, now seen corresponding path program 1 times [2025-02-08 05:10:50,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:10:50,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499673950] [2025-02-08 05:10:50,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:10:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:10:50,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-08 05:10:50,149 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-08 05:10:50,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:10:50,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:10:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:10:50,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:10:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499673950] [2025-02-08 05:10:50,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499673950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:10:50,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:10:50,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 05:10:50,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302415172] [2025-02-08 05:10:50,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:10:50,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 05:10:50,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:10:50,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 05:10:50,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 05:10:50,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 455 [2025-02-08 05:10:50,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 455 transitions, 964 flow. Second operand has 3 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 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) [2025-02-08 05:10:50,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 05:10:50,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 455 [2025-02-08 05:10:50,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 05:11:03,653 INFO L124 PetriNetUnfolderBase]: 14941/76425 cut-off events. [2025-02-08 05:11:03,653 INFO L125 PetriNetUnfolderBase]: For 29281/29281 co-relation queries the response was YES. [2025-02-08 05:11:04,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100116 conditions, 76425 events. 14941/76425 cut-off events. For 29281/29281 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 1192484 event pairs, 10572 based on Foata normal form. 20287/85909 useless extension candidates. Maximal degree in co-relation 29878. Up to 14213 conditions per place. [2025-02-08 05:11:05,474 INFO L140 encePairwiseOnDemand]: 433/455 looper letters, 39 selfloop transitions, 2 changer transitions 0/437 dead transitions. [2025-02-08 05:11:05,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 437 transitions, 1055 flow [2025-02-08 05:11:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 05:11:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-08 05:11:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1292 transitions. [2025-02-08 05:11:05,477 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9465201465201465 [2025-02-08 05:11:05,477 INFO L175 Difference]: Start difference. First operand has 432 places, 455 transitions, 964 flow. Second operand 3 states and 1292 transitions. [2025-02-08 05:11:05,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 437 transitions, 1055 flow [2025-02-08 05:11:05,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 437 transitions, 1015 flow, removed 20 selfloop flow, removed 0 redundant places. [2025-02-08 05:11:05,494 INFO L231 Difference]: Finished difference. Result has 419 places, 422 transitions, 888 flow [2025-02-08 05:11:05,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=455, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=888, PETRI_PLACES=419, PETRI_TRANSITIONS=422} [2025-02-08 05:11:05,495 INFO L279 CegarLoopForPetriNet]: 432 programPoint places, -13 predicate places. [2025-02-08 05:11:05,495 INFO L471 AbstractCegarLoop]: Abstraction has has 419 places, 422 transitions, 888 flow [2025-02-08 05:11:05,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 407.3333333333333) internal successors, (1222), 3 states have internal predecessors, (1222), 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) [2025-02-08 05:11:05,496 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 05:11:05,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 05:11:05,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 05:11:05,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-02-08 05:11:05,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 05:11:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1357310068, now seen corresponding path program 1 times [2025-02-08 05:11:05,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 05:11:05,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231186134] [2025-02-08 05:11:05,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 05:11:05,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 05:11:05,502 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-02-08 05:11:05,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 05:11:05,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 05:11:05,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 05:11:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 05:11:05,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 05:11:05,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231186134] [2025-02-08 05:11:05,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231186134] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 05:11:05,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 05:11:05,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 05:11:05,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204960333] [2025-02-08 05:11:05,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 05:11:05,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 05:11:05,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 05:11:05,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 05:11:05,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 05:11:06,000 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 455 [2025-02-08 05:11:06,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 422 transitions, 888 flow. Second operand has 6 states, 6 states have (on average 401.6666666666667) internal successors, (2410), 6 states have internal predecessors, (2410), 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) [2025-02-08 05:11:06,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 05:11:06,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 455 [2025-02-08 05:11:06,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand