./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version f8ab0bd5 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 22:00:10,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 22:00:10,778 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-13 22:00:10,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 22:00:10,784 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 22:00:10,806 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 22:00:10,808 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 22:00:10,808 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 22:00:10,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 22:00:10,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 22:00:10,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 22:00:10,810 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 22:00:10,810 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 22:00:10,810 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 22:00:10,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 22:00:10,810 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 22:00:10,811 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 22:00:10,811 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 22:00:10,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 22:00:10,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 22:00:10,813 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 22:00:10,813 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 22:00:10,813 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 22:00:10,813 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2025-03-13 22:00:11,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 22:00:11,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 22:00:11,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 22:00:11,034 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 22:00:11,034 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 22:00:11,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-03-13 22:00:12,184 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ecabd2d/f04d637dd8214229ba5767a0d036320b/FLAGb912c50c7 [2025-03-13 22:00:12,458 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 22:00:12,458 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2025-03-13 22:00:12,472 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ecabd2d/f04d637dd8214229ba5767a0d036320b/FLAGb912c50c7 [2025-03-13 22:00:12,485 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0ecabd2d/f04d637dd8214229ba5767a0d036320b [2025-03-13 22:00:12,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 22:00:12,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 22:00:12,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 22:00:12,491 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 22:00:12,494 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 22:00:12,495 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,495 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d409241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12, skipping insertion in model container [2025-03-13 22:00:12,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,521 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 22:00:12,760 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 22:00:12,768 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 22:00:12,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 22:00:12,831 INFO L204 MainTranslator]: Completed translation [2025-03-13 22:00:12,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12 WrapperNode [2025-03-13 22:00:12,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 22:00:12,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 22:00:12,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 22:00:12,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 22:00:12,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,849 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,865 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 69 [2025-03-13 22:00:12,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 22:00:12,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 22:00:12,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 22:00:12,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 22:00:12,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,878 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,878 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,879 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,880 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 22:00:12,881 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 22:00:12,881 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 22:00:12,881 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 22:00:12,882 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (1/1) ... [2025-03-13 22:00:12,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 22:00:12,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 22:00:12,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-13 22:00:12,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-13 22:00:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-13 22:00:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-13 22:00:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 22:00:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-13 22:00:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 22:00:12,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 22:00:12,925 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 22:00:12,998 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 22:00:12,999 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 22:00:13,108 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 22:00:13,109 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 22:00:13,109 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 22:00:13,174 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 22:00:13,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 10:00:13 BoogieIcfgContainer [2025-03-13 22:00:13,175 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 22:00:13,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 22:00:13,177 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 22:00:13,181 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 22:00:13,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 10:00:12" (1/3) ... [2025-03-13 22:00:13,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f779488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 10:00:13, skipping insertion in model container [2025-03-13 22:00:13,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:00:12" (2/3) ... [2025-03-13 22:00:13,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f779488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 10:00:13, skipping insertion in model container [2025-03-13 22:00:13,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 10:00:13" (3/3) ... [2025-03-13 22:00:13,184 INFO L128 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2025-03-13 22:00:13,195 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 22:00:13,196 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 29_conditionals_vs.i that has 2 procedures, 52 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2025-03-13 22:00:13,196 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 22:00:13,224 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:13,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 57 transitions, 118 flow [2025-03-13 22:00:13,285 INFO L124 PetriNetUnfolderBase]: 5/64 cut-off events. [2025-03-13 22:00:13,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:13,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 0 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2025-03-13 22:00:13,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 57 transitions, 118 flow [2025-03-13 22:00:13,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 57 transitions, 118 flow [2025-03-13 22:00:13,301 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:13,309 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:13,310 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-13 22:00:13,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:13,318 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2025-03-13 22:00:13,318 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:00:13,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:13,318 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:13,319 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-03-13 22:00:13,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1226392039, now seen corresponding path program 1 times [2025-03-13 22:00:13,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:13,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735213006] [2025-03-13 22:00:13,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:13,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:13,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 22:00:13,395 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 22:00:13,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:13,396 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:13,401 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 22:00:13,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 22:00:13,407 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:13,418 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:13,419 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:13,420 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-03-13 22:00:13,421 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-03-13 22:00:13,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 22:00:13,422 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-13 22:00:13,425 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:13,425 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-13 22:00:13,447 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:13,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 94 transitions, 198 flow [2025-03-13 22:00:13,474 INFO L124 PetriNetUnfolderBase]: 10/110 cut-off events. [2025-03-13 22:00:13,476 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 22:00:13,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118 conditions, 110 events. 10/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 81. Up to 3 conditions per place. [2025-03-13 22:00:13,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 94 transitions, 198 flow [2025-03-13 22:00:13,478 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 94 transitions, 198 flow [2025-03-13 22:00:13,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:13,482 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:13,482 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-13 22:00:13,492 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:13,492 INFO L124 PetriNetUnfolderBase]: 0/53 cut-off events. [2025-03-13 22:00:13,492 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-13 22:00:13,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:13,492 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:13,492 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-13 22:00:13,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:13,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1564044361, now seen corresponding path program 1 times [2025-03-13 22:00:13,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:13,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226176934] [2025-03-13 22:00:13,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:13,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:13,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-13 22:00:13,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 22:00:13,521 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,521 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:13,521 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:13,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-13 22:00:13,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-13 22:00:13,529 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,529 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:13,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:13,532 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-03-13 22:00:13,532 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-03-13 22:00:13,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-03-13 22:00:13,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-03-13 22:00:13,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-03-13 22:00:13,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-03-13 22:00:13,533 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-03-13 22:00:13,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 22:00:13,533 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-13 22:00:13,533 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:13,533 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-13 22:00:13,581 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:13,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 280 flow [2025-03-13 22:00:13,611 INFO L124 PetriNetUnfolderBase]: 15/156 cut-off events. [2025-03-13 22:00:13,612 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-13 22:00:13,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 15/156 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 415 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 117. Up to 4 conditions per place. [2025-03-13 22:00:13,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 131 transitions, 280 flow [2025-03-13 22:00:13,617 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 131 transitions, 280 flow [2025-03-13 22:00:13,619 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:13,619 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:13,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-13 22:00:13,626 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:13,628 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-13 22:00:13,628 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:13,628 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:13,629 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:13,629 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-13 22:00:13,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:13,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1854209579, now seen corresponding path program 1 times [2025-03-13 22:00:13,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:13,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261584744] [2025-03-13 22:00:13,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:13,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:13,637 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:13,640 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:13,640 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,640 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:13,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:13,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261584744] [2025-03-13 22:00:13,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261584744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:13,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:13,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 22:00:13,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446402313] [2025-03-13 22:00:13,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:13,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 22:00:13,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:13,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 22:00:13,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 22:00:13,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 131 [2025-03-13 22:00:13,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 131 transitions, 280 flow. Second operand has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:13,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:13,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 131 [2025-03-13 22:00:13,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:13,801 INFO L124 PetriNetUnfolderBase]: 81/506 cut-off events. [2025-03-13 22:00:13,801 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2025-03-13 22:00:13,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 506 events. 81/506 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2618 event pairs, 42 based on Foata normal form. 104/553 useless extension candidates. Maximal degree in co-relation 184. Up to 82 conditions per place. [2025-03-13 22:00:13,809 INFO L140 encePairwiseOnDemand]: 112/131 looper letters, 9 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2025-03-13 22:00:13,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 103 transitions, 242 flow [2025-03-13 22:00:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 22:00:13,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 22:00:13,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 228 transitions. [2025-03-13 22:00:13,821 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8702290076335878 [2025-03-13 22:00:13,823 INFO L175 Difference]: Start difference. First operand has 123 places, 131 transitions, 280 flow. Second operand 2 states and 228 transitions. [2025-03-13 22:00:13,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 103 transitions, 242 flow [2025-03-13 22:00:13,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 103 transitions, 240 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-13 22:00:13,831 INFO L231 Difference]: Finished difference. Result has 102 places, 103 transitions, 222 flow [2025-03-13 22:00:13,834 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=131, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=222, PETRI_PLACES=102, PETRI_TRANSITIONS=103} [2025-03-13 22:00:13,836 INFO L279 CegarLoopForPetriNet]: 123 programPoint places, -21 predicate places. [2025-03-13 22:00:13,836 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 103 transitions, 222 flow [2025-03-13 22:00:13,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.0) internal successors, (202), 2 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:13,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:13,837 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:13,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 22:00:13,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-13 22:00:13,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:13,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1641797086, now seen corresponding path program 1 times [2025-03-13 22:00:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836655608] [2025-03-13 22:00:13,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:13,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:13,852 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-13 22:00:13,861 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-13 22:00:13,861 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,861 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:13,862 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:13,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-03-13 22:00:13,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-03-13 22:00:13,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:13,873 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:13,873 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:13,873 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-03-13 22:00:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-03-13 22:00:13,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-03-13 22:00:13,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-03-13 22:00:13,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-03-13 22:00:13,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-03-13 22:00:13,875 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-03-13 22:00:13,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 22:00:13,875 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:13,876 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:13,876 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-13 22:00:13,908 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:13,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 168 transitions, 364 flow [2025-03-13 22:00:13,930 INFO L124 PetriNetUnfolderBase]: 20/202 cut-off events. [2025-03-13 22:00:13,930 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-13 22:00:13,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 202 events. 20/202 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 603 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 164. Up to 5 conditions per place. [2025-03-13 22:00:13,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 168 transitions, 364 flow [2025-03-13 22:00:13,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 168 transitions, 364 flow [2025-03-13 22:00:13,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:13,937 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:13,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-13 22:00:13,943 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:13,943 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-13 22:00:13,943 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:13,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:13,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:13,943 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-13 22:00:13,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:13,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1471672067, now seen corresponding path program 1 times [2025-03-13 22:00:13,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:13,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41557612] [2025-03-13 22:00:13,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:13,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:13,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:13,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:13,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:13,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:14,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:14,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41557612] [2025-03-13 22:00:14,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41557612] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:14,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:14,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 22:00:14,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425061111] [2025-03-13 22:00:14,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:14,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 22:00:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:14,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 22:00:14,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 22:00:14,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 168 [2025-03-13 22:00:14,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 168 transitions, 364 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:14,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:14,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 168 [2025-03-13 22:00:14,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:14,229 INFO L124 PetriNetUnfolderBase]: 324/1604 cut-off events. [2025-03-13 22:00:14,230 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2025-03-13 22:00:14,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1604 events. 324/1604 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11980 event pairs, 204 based on Foata normal form. 392/1819 useless extension candidates. Maximal degree in co-relation 639. Up to 325 conditions per place. [2025-03-13 22:00:14,242 INFO L140 encePairwiseOnDemand]: 143/168 looper letters, 12 selfloop transitions, 0 changer transitions 0/132 dead transitions. [2025-03-13 22:00:14,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 132 transitions, 316 flow [2025-03-13 22:00:14,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 22:00:14,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 22:00:14,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 291 transitions. [2025-03-13 22:00:14,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8660714285714286 [2025-03-13 22:00:14,247 INFO L175 Difference]: Start difference. First operand has 157 places, 168 transitions, 364 flow. Second operand 2 states and 291 transitions. [2025-03-13 22:00:14,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 132 transitions, 316 flow [2025-03-13 22:00:14,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 132 transitions, 310 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-13 22:00:14,252 INFO L231 Difference]: Finished difference. Result has 130 places, 132 transitions, 286 flow [2025-03-13 22:00:14,253 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=286, PETRI_PLACES=130, PETRI_TRANSITIONS=132} [2025-03-13 22:00:14,254 INFO L279 CegarLoopForPetriNet]: 157 programPoint places, -27 predicate places. [2025-03-13 22:00:14,255 INFO L471 AbstractCegarLoop]: Abstraction has has 130 places, 132 transitions, 286 flow [2025-03-13 22:00:14,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:14,256 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:14,256 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:14,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 22:00:14,256 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-13 22:00:14,256 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:14,257 INFO L85 PathProgramCache]: Analyzing trace with hash 12329070, now seen corresponding path program 1 times [2025-03-13 22:00:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103500155] [2025-03-13 22:00:14,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:14,264 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-13 22:00:14,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-13 22:00:14,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:14,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:14,270 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:14,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-13 22:00:14,279 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-13 22:00:14,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:14,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:14,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:14,293 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-03-13 22:00:14,293 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-03-13 22:00:14,297 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-03-13 22:00:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-03-13 22:00:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-03-13 22:00:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-03-13 22:00:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-03-13 22:00:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-03-13 22:00:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-03-13 22:00:14,298 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-03-13 22:00:14,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 22:00:14,298 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:14,299 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:14,299 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-13 22:00:14,335 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:14,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 205 transitions, 450 flow [2025-03-13 22:00:14,357 INFO L124 PetriNetUnfolderBase]: 25/248 cut-off events. [2025-03-13 22:00:14,358 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-13 22:00:14,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 248 events. 25/248 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 801 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 215. Up to 6 conditions per place. [2025-03-13 22:00:14,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 205 transitions, 450 flow [2025-03-13 22:00:14,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 205 transitions, 450 flow [2025-03-13 22:00:14,364 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:14,364 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:14,365 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-13 22:00:14,368 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:14,368 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-13 22:00:14,368 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:14,368 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:14,368 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:14,369 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-13 22:00:14,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:14,369 INFO L85 PathProgramCache]: Analyzing trace with hash -189968926, now seen corresponding path program 1 times [2025-03-13 22:00:14,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:14,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374314084] [2025-03-13 22:00:14,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:14,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:14,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:14,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:14,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:14,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:14,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:14,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374314084] [2025-03-13 22:00:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374314084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 22:00:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125572460] [2025-03-13 22:00:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:14,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 22:00:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:14,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 22:00:14,398 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 22:00:14,399 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 205 [2025-03-13 22:00:14,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 205 transitions, 450 flow. Second operand has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:14,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:14,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 205 [2025-03-13 22:00:14,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:15,097 INFO L124 PetriNetUnfolderBase]: 1215/5060 cut-off events. [2025-03-13 22:00:15,097 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2025-03-13 22:00:15,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6950 conditions, 5060 events. 1215/5060 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 48389 event pairs, 852 based on Foata normal form. 1418/5941 useless extension candidates. Maximal degree in co-relation 2142. Up to 1216 conditions per place. [2025-03-13 22:00:15,146 INFO L140 encePairwiseOnDemand]: 174/205 looper letters, 15 selfloop transitions, 0 changer transitions 0/161 dead transitions. [2025-03-13 22:00:15,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 392 flow [2025-03-13 22:00:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 22:00:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 22:00:15,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 354 transitions. [2025-03-13 22:00:15,148 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8634146341463415 [2025-03-13 22:00:15,148 INFO L175 Difference]: Start difference. First operand has 191 places, 205 transitions, 450 flow. Second operand 2 states and 354 transitions. [2025-03-13 22:00:15,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 392 flow [2025-03-13 22:00:15,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 161 transitions, 380 flow, removed 6 selfloop flow, removed 0 redundant places. [2025-03-13 22:00:15,157 INFO L231 Difference]: Finished difference. Result has 158 places, 161 transitions, 350 flow [2025-03-13 22:00:15,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=350, PETRI_PLACES=158, PETRI_TRANSITIONS=161} [2025-03-13 22:00:15,158 INFO L279 CegarLoopForPetriNet]: 191 programPoint places, -33 predicate places. [2025-03-13 22:00:15,159 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 161 transitions, 350 flow [2025-03-13 22:00:15,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:15,159 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:15,159 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:15,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 22:00:15,160 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-13 22:00:15,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:15,161 INFO L85 PathProgramCache]: Analyzing trace with hash 38874951, now seen corresponding path program 1 times [2025-03-13 22:00:15,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:15,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73822873] [2025-03-13 22:00:15,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:15,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-13 22:00:15,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-13 22:00:15,183 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:15,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:15,183 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:15,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-13 22:00:15,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-13 22:00:15,195 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:15,195 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:15,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:15,207 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:15,207 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-03-13 22:00:15,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-03-13 22:00:15,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-03-13 22:00:15,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-03-13 22:00:15,207 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-03-13 22:00:15,208 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-03-13 22:00:15,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-03-13 22:00:15,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-03-13 22:00:15,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-03-13 22:00:15,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-03-13 22:00:15,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-03-13 22:00:15,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-03-13 22:00:15,209 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-03-13 22:00:15,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 22:00:15,210 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:15,210 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:15,210 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-13 22:00:15,242 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:15,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 242 transitions, 538 flow [2025-03-13 22:00:15,265 INFO L124 PetriNetUnfolderBase]: 30/294 cut-off events. [2025-03-13 22:00:15,266 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-13 22:00:15,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 294 events. 30/294 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 997 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2025-03-13 22:00:15,268 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 242 transitions, 538 flow [2025-03-13 22:00:15,271 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 242 transitions, 538 flow [2025-03-13 22:00:15,271 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:15,272 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:15,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-13 22:00:15,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:15,275 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-13 22:00:15,275 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:15,275 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:15,275 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:15,275 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-13 22:00:15,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:15,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1547098128, now seen corresponding path program 1 times [2025-03-13 22:00:15,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:15,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072596153] [2025-03-13 22:00:15,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:15,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:15,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:15,282 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:15,282 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:15,282 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:15,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:15,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072596153] [2025-03-13 22:00:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072596153] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:15,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 22:00:15,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808857874] [2025-03-13 22:00:15,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:15,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 22:00:15,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:15,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 22:00:15,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 22:00:15,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 242 [2025-03-13 22:00:15,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 242 transitions, 538 flow. Second operand has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:15,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:15,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 242 [2025-03-13 22:00:15,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:17,391 INFO L124 PetriNetUnfolderBase]: 4374/15914 cut-off events. [2025-03-13 22:00:17,392 INFO L125 PetriNetUnfolderBase]: For 10297/10297 co-relation queries the response was YES. [2025-03-13 22:00:17,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22665 conditions, 15914 events. 4374/15914 cut-off events. For 10297/10297 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 181071 event pairs, 3282 based on Foata normal form. 4982/19279 useless extension candidates. Maximal degree in co-relation 7056. Up to 4375 conditions per place. [2025-03-13 22:00:17,568 INFO L140 encePairwiseOnDemand]: 205/242 looper letters, 18 selfloop transitions, 0 changer transitions 0/190 dead transitions. [2025-03-13 22:00:17,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 190 transitions, 470 flow [2025-03-13 22:00:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 22:00:17,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 22:00:17,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 417 transitions. [2025-03-13 22:00:17,570 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8615702479338843 [2025-03-13 22:00:17,570 INFO L175 Difference]: Start difference. First operand has 225 places, 242 transitions, 538 flow. Second operand 2 states and 417 transitions. [2025-03-13 22:00:17,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 190 transitions, 470 flow [2025-03-13 22:00:17,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 190 transitions, 450 flow, removed 10 selfloop flow, removed 0 redundant places. [2025-03-13 22:00:17,581 INFO L231 Difference]: Finished difference. Result has 186 places, 190 transitions, 414 flow [2025-03-13 22:00:17,582 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=414, PETRI_PLACES=186, PETRI_TRANSITIONS=190} [2025-03-13 22:00:17,583 INFO L279 CegarLoopForPetriNet]: 225 programPoint places, -39 predicate places. [2025-03-13 22:00:17,583 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 190 transitions, 414 flow [2025-03-13 22:00:17,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:17,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:17,584 INFO L206 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:17,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-13 22:00:17,584 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-13 22:00:17,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1723277751, now seen corresponding path program 1 times [2025-03-13 22:00:17,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:17,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727527525] [2025-03-13 22:00:17,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:17,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-13 22:00:17,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-13 22:00:17,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:17,602 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:17,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-13 22:00:17,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-13 22:00:17,616 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,617 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:17,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:17,626 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:17,626 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2025-03-13 22:00:17,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 29 remaining) [2025-03-13 22:00:17,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 29 remaining) [2025-03-13 22:00:17,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 29 remaining) [2025-03-13 22:00:17,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 29 remaining) [2025-03-13 22:00:17,628 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 29 remaining) [2025-03-13 22:00:17,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 29 remaining) [2025-03-13 22:00:17,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-13 22:00:17,631 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:17,632 WARN L246 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:17,632 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2025-03-13 22:00:17,666 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:17,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 279 transitions, 628 flow [2025-03-13 22:00:17,695 INFO L124 PetriNetUnfolderBase]: 35/340 cut-off events. [2025-03-13 22:00:17,696 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2025-03-13 22:00:17,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 340 events. 35/340 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1203 event pairs, 0 based on Foata normal form. 0/269 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2025-03-13 22:00:17,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 259 places, 279 transitions, 628 flow [2025-03-13 22:00:17,702 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 279 transitions, 628 flow [2025-03-13 22:00:17,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:17,704 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:17,704 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2025-03-13 22:00:17,706 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:17,706 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-13 22:00:17,706 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:17,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:17,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:17,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-13 22:00:17,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash -743446161, now seen corresponding path program 1 times [2025-03-13 22:00:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691535016] [2025-03-13 22:00:17,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:17,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:17,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:17,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:17,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:17,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:17,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:17,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:17,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691535016] [2025-03-13 22:00:17,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691535016] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:17,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:17,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 22:00:17,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538940062] [2025-03-13 22:00:17,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:17,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 22:00:17,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:17,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 22:00:17,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 22:00:17,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 279 [2025-03-13 22:00:17,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 279 transitions, 628 flow. Second operand has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:17,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:17,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 279 [2025-03-13 22:00:17,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:24,203 INFO L124 PetriNetUnfolderBase]: 15309/49934 cut-off events. [2025-03-13 22:00:24,203 INFO L125 PetriNetUnfolderBase]: For 42373/42373 co-relation queries the response was YES. [2025-03-13 22:00:24,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73453 conditions, 49934 events. 15309/49934 cut-off events. For 42373/42373 co-relation queries the response was YES. Maximal size of possible extension queue 1447. Compared 653357 event pairs, 12030 based on Foata normal form. 17132/62209 useless extension candidates. Maximal degree in co-relation 23013. Up to 15310 conditions per place. [2025-03-13 22:00:25,025 INFO L140 encePairwiseOnDemand]: 236/279 looper letters, 21 selfloop transitions, 0 changer transitions 0/219 dead transitions. [2025-03-13 22:00:25,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 219 transitions, 550 flow [2025-03-13 22:00:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 22:00:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 22:00:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 480 transitions. [2025-03-13 22:00:25,027 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8602150537634409 [2025-03-13 22:00:25,027 INFO L175 Difference]: Start difference. First operand has 259 places, 279 transitions, 628 flow. Second operand 2 states and 480 transitions. [2025-03-13 22:00:25,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 219 transitions, 550 flow [2025-03-13 22:00:25,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 219 transitions, 520 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-13 22:00:25,049 INFO L231 Difference]: Finished difference. Result has 214 places, 219 transitions, 478 flow [2025-03-13 22:00:25,049 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=214, PETRI_TRANSITIONS=219} [2025-03-13 22:00:25,050 INFO L279 CegarLoopForPetriNet]: 259 programPoint places, -45 predicate places. [2025-03-13 22:00:25,050 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 219 transitions, 478 flow [2025-03-13 22:00:25,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 209.0) internal successors, (418), 2 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:25,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:25,051 INFO L206 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:25,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-13 22:00:25,051 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2025-03-13 22:00:25,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:25,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1157966164, now seen corresponding path program 1 times [2025-03-13 22:00:25,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:25,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308506621] [2025-03-13 22:00:25,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:25,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:25,061 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-13 22:00:25,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-13 22:00:25,072 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:25,072 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:25,072 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:25,074 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 56 statements into 1 equivalence classes. [2025-03-13 22:00:25,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 56 of 56 statements. [2025-03-13 22:00:25,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:25,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:25,084 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:25,085 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2025-03-13 22:00:25,085 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2025-03-13 22:00:25,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2025-03-13 22:00:25,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2025-03-13 22:00:25,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2025-03-13 22:00:25,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2025-03-13 22:00:25,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2025-03-13 22:00:25,086 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2025-03-13 22:00:25,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-13 22:00:25,086 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:25,088 WARN L246 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:25,088 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2025-03-13 22:00:25,123 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:25,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 316 transitions, 720 flow [2025-03-13 22:00:25,155 INFO L124 PetriNetUnfolderBase]: 40/386 cut-off events. [2025-03-13 22:00:25,155 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2025-03-13 22:00:25,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 386 events. 40/386 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1391 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 374. Up to 9 conditions per place. [2025-03-13 22:00:25,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 316 transitions, 720 flow [2025-03-13 22:00:25,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 316 transitions, 720 flow [2025-03-13 22:00:25,166 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:25,166 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:25,166 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2025-03-13 22:00:25,168 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:25,168 INFO L124 PetriNetUnfolderBase]: 0/59 cut-off events. [2025-03-13 22:00:25,168 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:25,168 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:25,168 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:25,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-03-13 22:00:25,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:25,169 INFO L85 PathProgramCache]: Analyzing trace with hash 202402111, now seen corresponding path program 1 times [2025-03-13 22:00:25,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:25,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074245883] [2025-03-13 22:00:25,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:25,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:25,176 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:25,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:25,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:25,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:25,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:25,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:25,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074245883] [2025-03-13 22:00:25,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074245883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:25,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:25,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 22:00:25,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743358031] [2025-03-13 22:00:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:25,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 22:00:25,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:25,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 22:00:25,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 22:00:25,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 316 [2025-03-13 22:00:25,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 316 transitions, 720 flow. Second operand has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:25,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:25,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 316 [2025-03-13 22:00:25,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:00:48,994 INFO L124 PetriNetUnfolderBase]: 52488/156368 cut-off events. [2025-03-13 22:00:48,994 INFO L125 PetriNetUnfolderBase]: For 167032/167032 co-relation queries the response was YES. [2025-03-13 22:00:51,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236750 conditions, 156368 events. 52488/156368 cut-off events. For 167032/167032 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 2279371 event pairs, 42648 based on Foata normal form. 57956/199747 useless extension candidates. Maximal degree in co-relation 74529. Up to 52489 conditions per place. [2025-03-13 22:00:52,891 INFO L140 encePairwiseOnDemand]: 267/316 looper letters, 24 selfloop transitions, 0 changer transitions 0/248 dead transitions. [2025-03-13 22:00:52,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 248 transitions, 632 flow [2025-03-13 22:00:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-13 22:00:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-13 22:00:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 543 transitions. [2025-03-13 22:00:52,893 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8591772151898734 [2025-03-13 22:00:52,893 INFO L175 Difference]: Start difference. First operand has 293 places, 316 transitions, 720 flow. Second operand 2 states and 543 transitions. [2025-03-13 22:00:52,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 248 transitions, 632 flow [2025-03-13 22:00:53,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 248 transitions, 590 flow, removed 21 selfloop flow, removed 0 redundant places. [2025-03-13 22:00:53,021 INFO L231 Difference]: Finished difference. Result has 242 places, 248 transitions, 542 flow [2025-03-13 22:00:53,021 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=316, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=542, PETRI_PLACES=242, PETRI_TRANSITIONS=248} [2025-03-13 22:00:53,022 INFO L279 CegarLoopForPetriNet]: 293 programPoint places, -51 predicate places. [2025-03-13 22:00:53,022 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 248 transitions, 542 flow [2025-03-13 22:00:53,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:53,022 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:53,022 INFO L206 CegarLoopForPetriNet]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:53,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-13 22:00:53,022 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 33 more)] === [2025-03-13 22:00:53,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1913400392, now seen corresponding path program 1 times [2025-03-13 22:00:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:53,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146317983] [2025-03-13 22:00:53,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:53,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:53,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-13 22:00:53,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-13 22:00:53,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:53,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:53,034 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-13 22:00:53,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-13 22:00:53,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-13 22:00:53,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:53,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-13 22:00:53,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-13 22:00:53,055 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 37 remaining) [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (35 of 37 remaining) [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (34 of 37 remaining) [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (33 of 37 remaining) [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (32 of 37 remaining) [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (31 of 37 remaining) [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (30 of 37 remaining) [2025-03-13 22:00:53,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (29 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (28 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (27 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (26 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (24 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 37 remaining) [2025-03-13 22:00:53,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 37 remaining) [2025-03-13 22:00:53,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 37 remaining) [2025-03-13 22:00:53,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 37 remaining) [2025-03-13 22:00:53,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 37 remaining) [2025-03-13 22:00:53,065 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 37 remaining) [2025-03-13 22:00:53,066 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 37 remaining) [2025-03-13 22:00:53,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-13 22:00:53,066 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-13 22:00:53,067 WARN L246 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-13 22:00:53,067 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2025-03-13 22:00:53,113 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 22:00:53,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 353 transitions, 814 flow [2025-03-13 22:00:53,150 INFO L124 PetriNetUnfolderBase]: 45/432 cut-off events. [2025-03-13 22:00:53,150 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2025-03-13 22:00:53,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 432 events. 45/432 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1592 event pairs, 0 based on Foata normal form. 0/341 useless extension candidates. Maximal degree in co-relation 430. Up to 10 conditions per place. [2025-03-13 22:00:53,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 353 transitions, 814 flow [2025-03-13 22:00:53,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 353 transitions, 814 flow [2025-03-13 22:00:53,161 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:00:53,162 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;@3d1387fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:00:53,162 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2025-03-13 22:00:53,164 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:00:53,165 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2025-03-13 22:00:53,165 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-13 22:00:53,165 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:00:53,165 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 22:00:53,165 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2025-03-13 22:00:53,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:00:53,165 INFO L85 PathProgramCache]: Analyzing trace with hash 275679796, now seen corresponding path program 1 times [2025-03-13 22:00:53,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:00:53,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402552785] [2025-03-13 22:00:53,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:00:53,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:00:53,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:00:53,172 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:00:53,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:00:53,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:00:53,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:00:53,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:00:53,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402552785] [2025-03-13 22:00:53,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402552785] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:00:53,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:00:53,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-13 22:00:53,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563648493] [2025-03-13 22:00:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:00:53,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-13 22:00:53,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:00:53,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-13 22:00:53,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-13 22:00:53,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 262 out of 353 [2025-03-13 22:00:53,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 353 transitions, 814 flow. Second operand has 2 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-13 22:00:53,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:00:53,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 262 of 353 [2025-03-13 22:00:53,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand