./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -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 0f41c28130c65bb66e6565b71877e71077746007ac43c6aef3ce3b863878a53a --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:13:33,471 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:13:33,520 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 11:13:33,525 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:13:33,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:13:33,541 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:13:33,542 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:13:33,542 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:13:33,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:13:33,543 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:13:33,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:13:33,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:13:33,543 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:13:33,543 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:13:33,543 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:13:33,543 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:13:33,543 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 11:13:33,543 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:13:33,545 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:13:33,545 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:13:33,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:13:33,546 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:13:33,546 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 -> 0f41c28130c65bb66e6565b71877e71077746007ac43c6aef3ce3b863878a53a [2025-03-17 11:13:33,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:13:33,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:13:33,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:13:33,778 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:13:33,778 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:13:33,779 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2025-03-17 11:13:34,875 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7297ff151/b9fb521508614a6281df3a06de2919ad/FLAGc8f2e4148 [2025-03-17 11:13:35,115 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:13:35,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2025-03-17 11:13:35,121 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7297ff151/b9fb521508614a6281df3a06de2919ad/FLAGc8f2e4148 [2025-03-17 11:13:35,133 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7297ff151/b9fb521508614a6281df3a06de2919ad [2025-03-17 11:13:35,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:13:35,137 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:13:35,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:13:35,138 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:13:35,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:13:35,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5232933f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35, skipping insertion in model container [2025-03-17 11:13:35,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,159 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:13:35,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:13:35,308 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 11:13:35,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:13:35,342 INFO L204 MainTranslator]: Completed translation [2025-03-17 11:13:35,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35 WrapperNode [2025-03-17 11:13:35,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:13:35,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 11:13:35,344 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 11:13:35,344 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 11:13:35,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,371 INFO L138 Inliner]: procedures = 22, calls = 21, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 298 [2025-03-17 11:13:35,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 11:13:35,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 11:13:35,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 11:13:35,372 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 11:13:35,377 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,383 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,385 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,386 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,388 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 11:13:35,388 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 11:13:35,388 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 11:13:35,388 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 11:13:35,389 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (1/1) ... [2025-03-17 11:13:35,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:13:35,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:13:35,424 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 11:13:35,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 11:13:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 11:13:35,445 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 11:13:35,445 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 11:13:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 11:13:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 11:13:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 11:13:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 11:13:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-03-17 11:13:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-03-17 11:13:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 11:13:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2025-03-17 11:13:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2025-03-17 11:13:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2025-03-17 11:13:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2025-03-17 11:13:35,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 11:13:35,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 11:13:35,447 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 11:13:35,532 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 11:13:35,533 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 11:13:35,858 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 11:13:35,858 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 11:13:35,885 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 11:13:35,888 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 11:13:35,888 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:13:35 BoogieIcfgContainer [2025-03-17 11:13:35,888 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 11:13:35,890 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 11:13:35,890 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 11:13:35,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 11:13:35,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:13:35" (1/3) ... [2025-03-17 11:13:35,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e7f37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:13:35, skipping insertion in model container [2025-03-17 11:13:35,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:13:35" (2/3) ... [2025-03-17 11:13:35,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e7f37f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:13:35, skipping insertion in model container [2025-03-17 11:13:35,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:13:35" (3/3) ... [2025-03-17 11:13:35,899 INFO L128 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2025-03-17 11:13:35,911 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 11:13:35,912 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG parallel-ticket-6.wvr.c that has 7 procedures, 315 locations, 1 initial locations, 0 loop locations, and 18 error locations. [2025-03-17 11:13:35,912 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 11:13:36,006 INFO L143 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2025-03-17 11:13:36,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 327 transitions, 696 flow [2025-03-17 11:13:36,145 INFO L124 PetriNetUnfolderBase]: 13/321 cut-off events. [2025-03-17 11:13:36,148 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2025-03-17 11:13:36,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 321 events. 13/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 616 event pairs, 0 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 279. Up to 2 conditions per place. [2025-03-17 11:13:36,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 327 transitions, 696 flow [2025-03-17 11:13:36,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 311 places, 304 transitions, 641 flow [2025-03-17 11:13:36,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:13:36,183 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;@5e1eb734, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:13:36,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2025-03-17 11:13:36,193 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:13:36,194 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2025-03-17 11:13:36,194 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:13:36,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:13:36,195 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:13:36,195 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-17 11:13:36,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:13:36,200 INFO L85 PathProgramCache]: Analyzing trace with hash 881102684, now seen corresponding path program 1 times [2025-03-17 11:13:36,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:13:36,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902907681] [2025-03-17 11:13:36,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:13:36,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:13:36,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-03-17 11:13:36,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-03-17 11:13:36,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:13:36,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:13:36,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:13:36,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:13:36,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902907681] [2025-03-17 11:13:36,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902907681] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:13:36,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:13:36,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:13:36,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886225895] [2025-03-17 11:13:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:13:36,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:13:36,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:13:36,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:13:36,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:13:36,406 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-17 11:13:36,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 304 transitions, 641 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:13:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:13:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-17 11:13:36,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:13:48,283 INFO L124 PetriNetUnfolderBase]: 41021/100072 cut-off events. [2025-03-17 11:13:48,284 INFO L125 PetriNetUnfolderBase]: For 4917/4917 co-relation queries the response was YES. [2025-03-17 11:13:49,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154655 conditions, 100072 events. 41021/100072 cut-off events. For 4917/4917 co-relation queries the response was YES. Maximal size of possible extension queue 3333. Compared 1288821 event pairs, 28796 based on Foata normal form. 10128/98053 useless extension candidates. Maximal degree in co-relation 153455. Up to 49704 conditions per place. [2025-03-17 11:13:49,964 INFO L140 encePairwiseOnDemand]: 317/327 looper letters, 39 selfloop transitions, 2 changer transitions 1/296 dead transitions. [2025-03-17 11:13:49,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 296 transitions, 707 flow [2025-03-17 11:13:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:13:49,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:13:49,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 871 transitions. [2025-03-17 11:13:49,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8878695208970439 [2025-03-17 11:13:49,984 INFO L175 Difference]: Start difference. First operand has 311 places, 304 transitions, 641 flow. Second operand 3 states and 871 transitions. [2025-03-17 11:13:49,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 296 transitions, 707 flow [2025-03-17 11:13:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 296 transitions, 686 flow, removed 0 selfloop flow, removed 11 redundant places. [2025-03-17 11:13:50,030 INFO L231 Difference]: Finished difference. Result has 301 places, 295 transitions, 606 flow [2025-03-17 11:13:50,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=606, PETRI_PLACES=301, PETRI_TRANSITIONS=295} [2025-03-17 11:13:50,036 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -10 predicate places. [2025-03-17 11:13:50,037 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 295 transitions, 606 flow [2025-03-17 11:13:50,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:13:50,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:13:50,038 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:13:50,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 11:13:50,038 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-17 11:13:50,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:13:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash 713523927, now seen corresponding path program 1 times [2025-03-17 11:13:50,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:13:50,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620560646] [2025-03-17 11:13:50,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:13:50,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:13:50,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-17 11:13:50,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-17 11:13:50,063 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:13:50,063 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:13:50,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:13:50,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:13:50,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620560646] [2025-03-17 11:13:50,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620560646] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:13:50,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:13:50,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:13:50,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752216203] [2025-03-17 11:13:50,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:13:50,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:13:50,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:13:50,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:13:50,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:13:50,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-17 11:13:50,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 295 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:13:50,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:13:50,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-17 11:13:50,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:14:03,007 INFO L124 PetriNetUnfolderBase]: 46206/107022 cut-off events. [2025-03-17 11:14:03,007 INFO L125 PetriNetUnfolderBase]: For 1456/1456 co-relation queries the response was YES. [2025-03-17 11:14:03,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166702 conditions, 107022 events. 46206/107022 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 3659. Compared 1346264 event pairs, 33264 based on Foata normal form. 0/94419 useless extension candidates. Maximal degree in co-relation 166664. Up to 56055 conditions per place. [2025-03-17 11:14:04,517 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 39 selfloop transitions, 2 changer transitions 0/294 dead transitions. [2025-03-17 11:14:04,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 294 transitions, 686 flow [2025-03-17 11:14:04,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:14:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:14:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 864 transitions. [2025-03-17 11:14:04,520 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2025-03-17 11:14:04,520 INFO L175 Difference]: Start difference. First operand has 301 places, 295 transitions, 606 flow. Second operand 3 states and 864 transitions. [2025-03-17 11:14:04,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 294 transitions, 686 flow [2025-03-17 11:14:04,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 294 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 11:14:04,523 INFO L231 Difference]: Finished difference. Result has 299 places, 294 transitions, 604 flow [2025-03-17 11:14:04,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=604, PETRI_PLACES=299, PETRI_TRANSITIONS=294} [2025-03-17 11:14:04,525 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -12 predicate places. [2025-03-17 11:14:04,525 INFO L471 AbstractCegarLoop]: Abstraction has has 299 places, 294 transitions, 604 flow [2025-03-17 11:14:04,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:04,525 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:14:04,525 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:14:04,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 11:14:04,526 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-17 11:14:04,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:14:04,526 INFO L85 PathProgramCache]: Analyzing trace with hash 878029599, now seen corresponding path program 1 times [2025-03-17 11:14:04,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:14:04,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187866572] [2025-03-17 11:14:04,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:14:04,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:14:04,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-03-17 11:14:04,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-03-17 11:14:04,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:14:04,538 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:14:04,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:14:04,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:14:04,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187866572] [2025-03-17 11:14:04,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187866572] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:14:04,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:14:04,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:14:04,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903955426] [2025-03-17 11:14:04,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:14:04,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:14:04,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:14:04,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:14:04,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:14:04,582 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-17 11:14:04,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 294 transitions, 604 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:04,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:14:04,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-17 11:14:04,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:14:15,100 INFO L124 PetriNetUnfolderBase]: 46489/108025 cut-off events. [2025-03-17 11:14:15,101 INFO L125 PetriNetUnfolderBase]: For 1554/1554 co-relation queries the response was YES. [2025-03-17 11:14:15,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168052 conditions, 108025 events. 46489/108025 cut-off events. For 1554/1554 co-relation queries the response was YES. Maximal size of possible extension queue 3678. Compared 1371297 event pairs, 33547 based on Foata normal form. 0/94826 useless extension candidates. Maximal degree in co-relation 168006. Up to 56418 conditions per place. [2025-03-17 11:14:16,552 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 39 selfloop transitions, 2 changer transitions 0/293 dead transitions. [2025-03-17 11:14:16,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 293 transitions, 684 flow [2025-03-17 11:14:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:14:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:14:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 864 transitions. [2025-03-17 11:14:16,554 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2025-03-17 11:14:16,555 INFO L175 Difference]: Start difference. First operand has 299 places, 294 transitions, 604 flow. Second operand 3 states and 864 transitions. [2025-03-17 11:14:16,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 293 transitions, 684 flow [2025-03-17 11:14:16,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 293 transitions, 680 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 11:14:16,558 INFO L231 Difference]: Finished difference. Result has 298 places, 293 transitions, 602 flow [2025-03-17 11:14:16,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=602, PETRI_PLACES=298, PETRI_TRANSITIONS=293} [2025-03-17 11:14:16,560 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -13 predicate places. [2025-03-17 11:14:16,560 INFO L471 AbstractCegarLoop]: Abstraction has has 298 places, 293 transitions, 602 flow [2025-03-17 11:14:16,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:16,561 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:14:16,561 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:14:16,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 11:14:16,561 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-17 11:14:16,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:14:16,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1541506063, now seen corresponding path program 1 times [2025-03-17 11:14:16,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:14:16,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170864287] [2025-03-17 11:14:16,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:14:16,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:14:16,569 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 54 statements into 1 equivalence classes. [2025-03-17 11:14:16,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 54 of 54 statements. [2025-03-17 11:14:16,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:14:16,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:14:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:14:16,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:14:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170864287] [2025-03-17 11:14:16,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170864287] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:14:16,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:14:16,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:14:16,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176196936] [2025-03-17 11:14:16,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:14:16,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:14:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:14:16,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:14:16,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:14:16,646 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-17 11:14:16,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 293 transitions, 602 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:16,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:14:16,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-17 11:14:16,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:14:27,556 INFO L124 PetriNetUnfolderBase]: 47383/103919 cut-off events. [2025-03-17 11:14:27,556 INFO L125 PetriNetUnfolderBase]: For 1584/1584 co-relation queries the response was YES. [2025-03-17 11:14:28,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165219 conditions, 103919 events. 47383/103919 cut-off events. For 1584/1584 co-relation queries the response was YES. Maximal size of possible extension queue 3653. Compared 1261371 event pairs, 34443 based on Foata normal form. 0/91176 useless extension candidates. Maximal degree in co-relation 165165. Up to 57491 conditions per place. [2025-03-17 11:14:29,085 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 39 selfloop transitions, 2 changer transitions 0/292 dead transitions. [2025-03-17 11:14:29,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 292 transitions, 682 flow [2025-03-17 11:14:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:14:29,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:14:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 864 transitions. [2025-03-17 11:14:29,087 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2025-03-17 11:14:29,088 INFO L175 Difference]: Start difference. First operand has 298 places, 293 transitions, 602 flow. Second operand 3 states and 864 transitions. [2025-03-17 11:14:29,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 292 transitions, 682 flow [2025-03-17 11:14:29,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 678 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 11:14:29,091 INFO L231 Difference]: Finished difference. Result has 297 places, 292 transitions, 600 flow [2025-03-17 11:14:29,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=600, PETRI_PLACES=297, PETRI_TRANSITIONS=292} [2025-03-17 11:14:29,092 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -14 predicate places. [2025-03-17 11:14:29,093 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 292 transitions, 600 flow [2025-03-17 11:14:29,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:29,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:14:29,093 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:14:29,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 11:14:29,094 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-17 11:14:29,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:14:29,094 INFO L85 PathProgramCache]: Analyzing trace with hash 841200741, now seen corresponding path program 1 times [2025-03-17 11:14:29,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:14:29,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691873] [2025-03-17 11:14:29,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:14:29,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:14:29,109 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-17 11:14:29,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-17 11:14:29,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:14:29,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:14:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:14:29,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:14:29,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691873] [2025-03-17 11:14:29,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691873] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:14:29,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:14:29,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:14:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570368360] [2025-03-17 11:14:29,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:14:29,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:14:29,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:14:29,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:14:29,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:14:29,178 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-17 11:14:29,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 292 transitions, 600 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:29,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:14:29,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-17 11:14:29,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:14:38,710 INFO L124 PetriNetUnfolderBase]: 48284/96451 cut-off events. [2025-03-17 11:14:38,711 INFO L125 PetriNetUnfolderBase]: For 1641/1641 co-relation queries the response was YES. [2025-03-17 11:14:39,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158475 conditions, 96451 events. 48284/96451 cut-off events. For 1641/1641 co-relation queries the response was YES. Maximal size of possible extension queue 3651. Compared 1073906 event pairs, 35496 based on Foata normal form. 0/85097 useless extension candidates. Maximal degree in co-relation 158413. Up to 58556 conditions per place. [2025-03-17 11:14:40,180 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 39 selfloop transitions, 2 changer transitions 0/291 dead transitions. [2025-03-17 11:14:40,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 291 transitions, 680 flow [2025-03-17 11:14:40,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:14:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:14:40,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 864 transitions. [2025-03-17 11:14:40,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2025-03-17 11:14:40,184 INFO L175 Difference]: Start difference. First operand has 297 places, 292 transitions, 600 flow. Second operand 3 states and 864 transitions. [2025-03-17 11:14:40,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 291 transitions, 680 flow [2025-03-17 11:14:40,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 291 transitions, 676 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 11:14:40,187 INFO L231 Difference]: Finished difference. Result has 296 places, 291 transitions, 598 flow [2025-03-17 11:14:40,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=594, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=598, PETRI_PLACES=296, PETRI_TRANSITIONS=291} [2025-03-17 11:14:40,188 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -15 predicate places. [2025-03-17 11:14:40,188 INFO L471 AbstractCegarLoop]: Abstraction has has 296 places, 291 transitions, 598 flow [2025-03-17 11:14:40,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:40,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:14:40,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:14:40,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 11:14:40,189 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-17 11:14:40,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:14:40,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1503239999, now seen corresponding path program 1 times [2025-03-17 11:14:40,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:14:40,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296648493] [2025-03-17 11:14:40,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:14:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:14:40,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-03-17 11:14:40,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-03-17 11:14:40,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:14:40,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:14:40,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:14:40,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:14:40,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296648493] [2025-03-17 11:14:40,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296648493] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:14:40,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:14:40,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:14:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56978294] [2025-03-17 11:14:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:14:40,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:14:40,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:14:40,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:14:40,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:14:40,243 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 327 [2025-03-17 11:14:40,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 291 transitions, 598 flow. Second operand has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:40,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:14:40,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 327 [2025-03-17 11:14:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:14:50,103 INFO L124 PetriNetUnfolderBase]: 43930/99796 cut-off events. [2025-03-17 11:14:50,110 INFO L125 PetriNetUnfolderBase]: For 1540/1540 co-relation queries the response was YES. [2025-03-17 11:14:51,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155572 conditions, 99796 events. 43930/99796 cut-off events. For 1540/1540 co-relation queries the response was YES. Maximal size of possible extension queue 3455. Compared 1224582 event pairs, 31423 based on Foata normal form. 0/87762 useless extension candidates. Maximal degree in co-relation 155502. Up to 53298 conditions per place. [2025-03-17 11:14:51,637 INFO L140 encePairwiseOnDemand]: 324/327 looper letters, 39 selfloop transitions, 2 changer transitions 0/290 dead transitions. [2025-03-17 11:14:51,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 290 transitions, 678 flow [2025-03-17 11:14:51,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:14:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:14:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 864 transitions. [2025-03-17 11:14:51,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8807339449541285 [2025-03-17 11:14:51,643 INFO L175 Difference]: Start difference. First operand has 296 places, 291 transitions, 598 flow. Second operand 3 states and 864 transitions. [2025-03-17 11:14:51,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 290 transitions, 678 flow [2025-03-17 11:14:51,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 290 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 11:14:51,647 INFO L231 Difference]: Finished difference. Result has 295 places, 290 transitions, 596 flow [2025-03-17 11:14:51,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=327, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=596, PETRI_PLACES=295, PETRI_TRANSITIONS=290} [2025-03-17 11:14:51,650 INFO L279 CegarLoopForPetriNet]: 311 programPoint places, -16 predicate places. [2025-03-17 11:14:51,650 INFO L471 AbstractCegarLoop]: Abstraction has has 295 places, 290 transitions, 596 flow [2025-03-17 11:14:51,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 275.3333333333333) internal successors, (826), 3 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:51,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:14:51,651 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:14:51,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 11:14:51,652 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err0ASSERT_VIOLATIONDATA_RACE, thread2Err1ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2025-03-17 11:14:51,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:14:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1610377817, now seen corresponding path program 1 times [2025-03-17 11:14:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:14:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479933199] [2025-03-17 11:14:51,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:14:51,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:14:51,665 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-03-17 11:14:51,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-03-17 11:14:51,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:14:51,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:14:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:14:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:14:51,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479933199] [2025-03-17 11:14:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479933199] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:14:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:14:51,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 11:14:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45027351] [2025-03-17 11:14:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:14:51,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:14:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:14:51,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:14:51,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:14:51,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 327 [2025-03-17 11:14:51,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 290 transitions, 596 flow. Second operand has 3 states, 3 states have (on average 279.3333333333333) internal successors, (838), 3 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:14:51,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:14:51,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 327 [2025-03-17 11:14:51,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand