./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/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_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:53:38,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:53:38,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:53:38,129 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:53:38,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:53:38,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:53:38,150 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:53:38,150 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:53:38,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:53:38,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:53:38,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:53:38,152 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:53:38,153 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:53:38,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:53:38,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:53:38,155 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:53:38,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:53:38,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:53:38,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:53:38,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:53:38,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:53:38,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:53:38,160 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:53:38,160 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:53:38,160 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:53:38,161 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:53:38,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:53:38,161 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:53:38,161 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:53:38,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:53:38,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:53:38,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:38,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:53:38,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:53:38,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:53:38,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:53:38,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:53:38,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:53:38,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:53:38,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:53:38,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:53:38,164 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f [2024-10-13 09:53:38,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:53:38,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:53:38,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:53:38,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:53:38,399 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:53:38,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-10-13 09:53:39,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:53:40,126 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:53:40,128 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_20-callback_racefree.i [2024-10-13 09:53:40,149 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca036795/b365f238e058470f9c960e4666b0ca2f/FLAG0b05d2eb5 [2024-10-13 09:53:40,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cca036795/b365f238e058470f9c960e4666b0ca2f [2024-10-13 09:53:40,465 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:53:40,467 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:53:40,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:40,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:53:40,473 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:53:40,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:40,474 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e9f8578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40, skipping insertion in model container [2024-10-13 09:53:40,478 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:40,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:53:40,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:40,877 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:53:40,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:53:40,958 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:53:40,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40 WrapperNode [2024-10-13 09:53:40,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:53:40,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:40,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:53:40,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:53:40,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:40,982 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,005 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 175 [2024-10-13 09:53:41,006 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:53:41,006 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:53:41,006 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:53:41,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:53:41,014 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,015 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,030 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,032 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:53:41,035 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:53:41,035 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:53:41,035 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:53:41,036 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (1/1) ... [2024-10-13 09:53:41,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:53:41,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:41,070 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) [2024-10-13 09:53:41,073 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 [2024-10-13 09:53:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:53:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:53:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:53:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:53:41,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:53:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:53:41,115 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:53:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:53:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:53:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:53:41,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:53:41,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:53:41,116 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:53:41,253 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:53:41,256 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:53:41,537 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:53:41,537 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:53:41,573 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:53:41,573 INFO L314 CfgBuilder]: Removed 11 assume(true) statements. [2024-10-13 09:53:41,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:41 BoogieIcfgContainer [2024-10-13 09:53:41,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:53:41,575 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:53:41,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:53:41,578 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:53:41,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:53:40" (1/3) ... [2024-10-13 09:53:41,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224d5729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:41, skipping insertion in model container [2024-10-13 09:53:41,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:53:40" (2/3) ... [2024-10-13 09:53:41,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224d5729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:53:41, skipping insertion in model container [2024-10-13 09:53:41,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:53:41" (3/3) ... [2024-10-13 09:53:41,581 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2024-10-13 09:53:41,597 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:53:41,597 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-10-13 09:53:41,597 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:53:41,651 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 09:53:41,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 184 transitions, 375 flow [2024-10-13 09:53:41,788 INFO L124 PetriNetUnfolderBase]: 27/294 cut-off events. [2024-10-13 09:53:41,792 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:53:41,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 294 events. 27/294 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 977 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 145. Up to 6 conditions per place. [2024-10-13 09:53:41,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 184 transitions, 375 flow [2024-10-13 09:53:41,815 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 171 places, 184 transitions, 375 flow [2024-10-13 09:53:41,826 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:41,834 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;@70518b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:41,834 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-13 09:53:41,845 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:41,845 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2024-10-13 09:53:41,846 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:41,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:41,847 INFO L204 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] [2024-10-13 09:53:41,847 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:41,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:41,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1043798880, now seen corresponding path program 1 times [2024-10-13 09:53:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:41,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060239393] [2024-10-13 09:53:41,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:41,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:42,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:42,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060239393] [2024-10-13 09:53:42,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060239393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:42,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:42,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128739539] [2024-10-13 09:53:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:42,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:42,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:42,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:42,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 184 [2024-10-13 09:53:42,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 184 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 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) [2024-10-13 09:53:42,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:42,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 184 [2024-10-13 09:53:42,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:42,991 INFO L124 PetriNetUnfolderBase]: 93/760 cut-off events. [2024-10-13 09:53:42,992 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 09:53:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 760 events. 93/760 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4265 event pairs, 8 based on Foata normal form. 101/803 useless extension candidates. Maximal degree in co-relation 799. Up to 154 conditions per place. [2024-10-13 09:53:42,999 INFO L140 encePairwiseOnDemand]: 165/184 looper letters, 40 selfloop transitions, 5 changer transitions 0/184 dead transitions. [2024-10-13 09:53:42,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 184 transitions, 465 flow [2024-10-13 09:53:43,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:43,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 915 transitions. [2024-10-13 09:53:43,020 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8288043478260869 [2024-10-13 09:53:43,022 INFO L175 Difference]: Start difference. First operand has 171 places, 184 transitions, 375 flow. Second operand 6 states and 915 transitions. [2024-10-13 09:53:43,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 184 transitions, 465 flow [2024-10-13 09:53:43,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 184 transitions, 465 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:43,030 INFO L231 Difference]: Finished difference. Result has 173 places, 168 transitions, 353 flow [2024-10-13 09:53:43,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=173, PETRI_TRANSITIONS=168} [2024-10-13 09:53:43,034 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, 2 predicate places. [2024-10-13 09:53:43,036 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 168 transitions, 353 flow [2024-10-13 09:53:43,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 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) [2024-10-13 09:53:43,037 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:43,038 INFO L204 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] [2024-10-13 09:53:43,038 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:53:43,039 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:43,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:43,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1196578425, now seen corresponding path program 1 times [2024-10-13 09:53:43,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:43,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41187325] [2024-10-13 09:53:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:43,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:43,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:43,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41187325] [2024-10-13 09:53:43,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41187325] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:43,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:43,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:43,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956224281] [2024-10-13 09:53:43,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:43,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:43,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:43,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:43,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:43,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 184 [2024-10-13 09:53:43,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 168 transitions, 353 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2024-10-13 09:53:43,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:43,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 184 [2024-10-13 09:53:43,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:43,281 INFO L124 PetriNetUnfolderBase]: 113/929 cut-off events. [2024-10-13 09:53:43,282 INFO L125 PetriNetUnfolderBase]: For 13/19 co-relation queries the response was YES. [2024-10-13 09:53:43,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 929 events. 113/929 cut-off events. For 13/19 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4849 event pairs, 34 based on Foata normal form. 1/852 useless extension candidates. Maximal degree in co-relation 1029. Up to 137 conditions per place. [2024-10-13 09:53:43,289 INFO L140 encePairwiseOnDemand]: 175/184 looper letters, 30 selfloop transitions, 6 changer transitions 0/181 dead transitions. [2024-10-13 09:53:43,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 181 transitions, 454 flow [2024-10-13 09:53:43,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:43,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2024-10-13 09:53:43,291 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2024-10-13 09:53:43,291 INFO L175 Difference]: Start difference. First operand has 173 places, 168 transitions, 353 flow. Second operand 3 states and 480 transitions. [2024-10-13 09:53:43,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 181 transitions, 454 flow [2024-10-13 09:53:43,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 181 transitions, 444 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:43,297 INFO L231 Difference]: Finished difference. Result has 170 places, 170 transitions, 381 flow [2024-10-13 09:53:43,297 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=381, PETRI_PLACES=170, PETRI_TRANSITIONS=170} [2024-10-13 09:53:43,298 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, -1 predicate places. [2024-10-13 09:53:43,298 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 170 transitions, 381 flow [2024-10-13 09:53:43,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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) [2024-10-13 09:53:43,299 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:43,299 INFO L204 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] [2024-10-13 09:53:43,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:53:43,299 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:43,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:43,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2008024647, now seen corresponding path program 1 times [2024-10-13 09:53:43,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:43,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288218040] [2024-10-13 09:53:43,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:43,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:43,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288218040] [2024-10-13 09:53:43,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288218040] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:43,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:43,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:43,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005243236] [2024-10-13 09:53:43,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:43,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:43,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 184 [2024-10-13 09:53:43,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 170 transitions, 381 flow. Second operand has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2024-10-13 09:53:43,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:43,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 184 [2024-10-13 09:53:43,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:43,487 INFO L124 PetriNetUnfolderBase]: 82/911 cut-off events. [2024-10-13 09:53:43,488 INFO L125 PetriNetUnfolderBase]: For 34/36 co-relation queries the response was YES. [2024-10-13 09:53:43,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 911 events. 82/911 cut-off events. For 34/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4731 event pairs, 38 based on Foata normal form. 1/846 useless extension candidates. Maximal degree in co-relation 1041. Up to 146 conditions per place. [2024-10-13 09:53:43,492 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 20 selfloop transitions, 2 changer transitions 0/174 dead transitions. [2024-10-13 09:53:43,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 174 transitions, 433 flow [2024-10-13 09:53:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:43,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2024-10-13 09:53:43,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8677536231884058 [2024-10-13 09:53:43,494 INFO L175 Difference]: Start difference. First operand has 170 places, 170 transitions, 381 flow. Second operand 3 states and 479 transitions. [2024-10-13 09:53:43,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 174 transitions, 433 flow [2024-10-13 09:53:43,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 174 transitions, 421 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:43,498 INFO L231 Difference]: Finished difference. Result has 171 places, 170 transitions, 377 flow [2024-10-13 09:53:43,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=171, PETRI_TRANSITIONS=170} [2024-10-13 09:53:43,499 INFO L277 CegarLoopForPetriNet]: 171 programPoint places, 0 predicate places. [2024-10-13 09:53:43,499 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 170 transitions, 377 flow [2024-10-13 09:53:43,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.33333333333334) internal successors, (460), 3 states have internal predecessors, (460), 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) [2024-10-13 09:53:43,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:43,500 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:43,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:53:43,500 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:53:43,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:43,501 INFO L85 PathProgramCache]: Analyzing trace with hash -138539635, now seen corresponding path program 1 times [2024-10-13 09:53:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:43,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299463873] [2024-10-13 09:53:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:43,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:43,528 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:53:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:43,557 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:53:43,558 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:53:43,559 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-13 09:53:43,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-13 09:53:43,560 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-13 09:53:43,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-13 09:53:43,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-13 09:53:43,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-13 09:53:43,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-13 09:53:43,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-13 09:53:43,561 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-13 09:53:43,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:53:43,562 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-10-13 09:53:43,564 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:53:43,564 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:53:43,581 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 09:53:43,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 216 transitions, 448 flow [2024-10-13 09:53:43,622 INFO L124 PetriNetUnfolderBase]: 45/464 cut-off events. [2024-10-13 09:53:43,623 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 09:53:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 464 events. 45/464 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1844 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 296. Up to 9 conditions per place. [2024-10-13 09:53:43,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 216 transitions, 448 flow [2024-10-13 09:53:43,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 216 transitions, 448 flow [2024-10-13 09:53:43,655 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:43,655 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;@70518b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:43,656 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-13 09:53:43,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:43,660 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2024-10-13 09:53:43,660 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:43,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:43,660 INFO L204 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] [2024-10-13 09:53:43,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:43,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:43,661 INFO L85 PathProgramCache]: Analyzing trace with hash -604353992, now seen corresponding path program 1 times [2024-10-13 09:53:43,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:43,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109564031] [2024-10-13 09:53:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:43,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:43,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:43,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109564031] [2024-10-13 09:53:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109564031] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:43,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:43,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:43,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74578627] [2024-10-13 09:53:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:43,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:43,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:43,949 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 216 [2024-10-13 09:53:43,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 216 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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) [2024-10-13 09:53:43,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:43,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 216 [2024-10-13 09:53:43,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:44,490 INFO L124 PetriNetUnfolderBase]: 1001/4603 cut-off events. [2024-10-13 09:53:44,491 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-10-13 09:53:44,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6262 conditions, 4603 events. 1001/4603 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 43066 event pairs, 108 based on Foata normal form. 915/5185 useless extension candidates. Maximal degree in co-relation 1068. Up to 1202 conditions per place. [2024-10-13 09:53:44,515 INFO L140 encePairwiseOnDemand]: 193/216 looper letters, 62 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2024-10-13 09:53:44,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 226 transitions, 602 flow [2024-10-13 09:53:44,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:44,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1083 transitions. [2024-10-13 09:53:44,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8356481481481481 [2024-10-13 09:53:44,517 INFO L175 Difference]: Start difference. First operand has 200 places, 216 transitions, 448 flow. Second operand 6 states and 1083 transitions. [2024-10-13 09:53:44,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 226 transitions, 602 flow [2024-10-13 09:53:44,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 226 transitions, 602 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:44,521 INFO L231 Difference]: Finished difference. Result has 200 places, 194 transitions, 414 flow [2024-10-13 09:53:44,522 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2024-10-13 09:53:44,523 INFO L277 CegarLoopForPetriNet]: 200 programPoint places, 0 predicate places. [2024-10-13 09:53:44,524 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 414 flow [2024-10-13 09:53:44,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 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) [2024-10-13 09:53:44,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:44,526 INFO L204 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] [2024-10-13 09:53:44,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:53:44,527 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:44,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:44,527 INFO L85 PathProgramCache]: Analyzing trace with hash -572343151, now seen corresponding path program 1 times [2024-10-13 09:53:44,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102797780] [2024-10-13 09:53:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:44,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:44,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:44,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102797780] [2024-10-13 09:53:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102797780] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:44,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:44,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:53:44,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098988419] [2024-10-13 09:53:44,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:44,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:44,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:44,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:44,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:44,583 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 216 [2024-10-13 09:53:44,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2024-10-13 09:53:44,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:44,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 216 [2024-10-13 09:53:44,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:44,976 INFO L124 PetriNetUnfolderBase]: 498/2955 cut-off events. [2024-10-13 09:53:44,976 INFO L125 PetriNetUnfolderBase]: For 87/87 co-relation queries the response was YES. [2024-10-13 09:53:44,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3885 conditions, 2955 events. 498/2955 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 25754 event pairs, 208 based on Foata normal form. 1/2689 useless extension candidates. Maximal degree in co-relation 772. Up to 817 conditions per place. [2024-10-13 09:53:44,992 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 27 selfloop transitions, 2 changer transitions 0/199 dead transitions. [2024-10-13 09:53:44,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 199 transitions, 484 flow [2024-10-13 09:53:44,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:44,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 549 transitions. [2024-10-13 09:53:44,994 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8472222222222222 [2024-10-13 09:53:44,994 INFO L175 Difference]: Start difference. First operand has 200 places, 194 transitions, 414 flow. Second operand 3 states and 549 transitions. [2024-10-13 09:53:44,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 199 transitions, 484 flow [2024-10-13 09:53:44,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 199 transitions, 472 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:53:44,998 INFO L231 Difference]: Finished difference. Result has 198 places, 195 transitions, 416 flow [2024-10-13 09:53:44,998 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=416, PETRI_PLACES=198, PETRI_TRANSITIONS=195} [2024-10-13 09:53:45,001 INFO L277 CegarLoopForPetriNet]: 200 programPoint places, -2 predicate places. [2024-10-13 09:53:45,001 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 195 transitions, 416 flow [2024-10-13 09:53:45,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2024-10-13 09:53:45,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:45,002 INFO L204 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] [2024-10-13 09:53:45,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:53:45,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:45,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash 983805569, now seen corresponding path program 1 times [2024-10-13 09:53:45,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:45,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407428381] [2024-10-13 09:53:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:45,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:45,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:45,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407428381] [2024-10-13 09:53:45,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407428381] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:45,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:45,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:45,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504551510] [2024-10-13 09:53:45,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:45,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:45,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:45,065 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 216 [2024-10-13 09:53:45,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 195 transitions, 416 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2024-10-13 09:53:45,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:45,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 216 [2024-10-13 09:53:45,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:45,864 INFO L124 PetriNetUnfolderBase]: 2100/8569 cut-off events. [2024-10-13 09:53:45,865 INFO L125 PetriNetUnfolderBase]: For 229/364 co-relation queries the response was YES. [2024-10-13 09:53:45,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12074 conditions, 8569 events. 2100/8569 cut-off events. For 229/364 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 85064 event pairs, 755 based on Foata normal form. 8/7779 useless extension candidates. Maximal degree in co-relation 12014. Up to 2123 conditions per place. [2024-10-13 09:53:45,937 INFO L140 encePairwiseOnDemand]: 204/216 looper letters, 45 selfloop transitions, 8 changer transitions 0/216 dead transitions. [2024-10-13 09:53:45,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 216 transitions, 575 flow [2024-10-13 09:53:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:45,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:45,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2024-10-13 09:53:45,939 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8518518518518519 [2024-10-13 09:53:45,939 INFO L175 Difference]: Start difference. First operand has 198 places, 195 transitions, 416 flow. Second operand 3 states and 552 transitions. [2024-10-13 09:53:45,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 216 transitions, 575 flow [2024-10-13 09:53:45,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 216 transitions, 573 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:53:45,944 INFO L231 Difference]: Finished difference. Result has 199 places, 199 transitions, 470 flow [2024-10-13 09:53:45,944 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=199, PETRI_TRANSITIONS=199} [2024-10-13 09:53:45,945 INFO L277 CegarLoopForPetriNet]: 200 programPoint places, -1 predicate places. [2024-10-13 09:53:45,946 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 199 transitions, 470 flow [2024-10-13 09:53:45,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2024-10-13 09:53:45,946 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:45,946 INFO L204 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] [2024-10-13 09:53:45,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:53:45,947 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:45,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:45,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1806539198, now seen corresponding path program 1 times [2024-10-13 09:53:45,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:45,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431570377] [2024-10-13 09:53:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:45,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:46,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:46,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:46,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431570377] [2024-10-13 09:53:46,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431570377] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:53:46,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659031442] [2024-10-13 09:53:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:46,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:53:46,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:53:46,018 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:53:46,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:53:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:46,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 09:53:46,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:53:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:53:46,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:53:46,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659031442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:46,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:53:46,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 09:53:46,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347848481] [2024-10-13 09:53:46,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:46,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:46,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:46,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:46,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:46,132 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 216 [2024-10-13 09:53:46,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 199 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2024-10-13 09:53:46,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:46,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 216 [2024-10-13 09:53:46,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:47,412 INFO L124 PetriNetUnfolderBase]: 2343/13194 cut-off events. [2024-10-13 09:53:47,412 INFO L125 PetriNetUnfolderBase]: For 566/570 co-relation queries the response was YES. [2024-10-13 09:53:47,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18243 conditions, 13194 events. 2343/13194 cut-off events. For 566/570 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 154890 event pairs, 1363 based on Foata normal form. 36/12169 useless extension candidates. Maximal degree in co-relation 16348. Up to 2189 conditions per place. [2024-10-13 09:53:47,468 INFO L140 encePairwiseOnDemand]: 213/216 looper letters, 37 selfloop transitions, 2 changer transitions 0/214 dead transitions. [2024-10-13 09:53:47,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 214 transitions, 578 flow [2024-10-13 09:53:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:53:47,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:53:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 559 transitions. [2024-10-13 09:53:47,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8626543209876543 [2024-10-13 09:53:47,471 INFO L175 Difference]: Start difference. First operand has 199 places, 199 transitions, 470 flow. Second operand 3 states and 559 transitions. [2024-10-13 09:53:47,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 214 transitions, 578 flow [2024-10-13 09:53:47,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 214 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:53:47,477 INFO L231 Difference]: Finished difference. Result has 200 places, 200 transitions, 466 flow [2024-10-13 09:53:47,477 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=216, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=466, PETRI_PLACES=200, PETRI_TRANSITIONS=200} [2024-10-13 09:53:47,478 INFO L277 CegarLoopForPetriNet]: 200 programPoint places, 0 predicate places. [2024-10-13 09:53:47,478 INFO L471 AbstractCegarLoop]: Abstraction has has 200 places, 200 transitions, 466 flow [2024-10-13 09:53:47,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 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) [2024-10-13 09:53:47,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:47,479 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:53:47,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:53:47,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:53:47,684 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 7 more)] === [2024-10-13 09:53:47,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:47,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1553928889, now seen corresponding path program 1 times [2024-10-13 09:53:47,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:47,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013937372] [2024-10-13 09:53:47,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:47,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:47,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:47,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:53:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:53:47,725 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:53:47,725 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:53:47,725 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-13 09:53:47,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-13 09:53:47,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-13 09:53:47,725 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-13 09:53:47,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-13 09:53:47,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-13 09:53:47,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-13 09:53:47,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-13 09:53:47,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-13 09:53:47,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-13 09:53:47,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:53:47,727 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 09:53:47,728 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:53:47,728 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:53:47,755 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-13 09:53:47,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 248 transitions, 523 flow [2024-10-13 09:53:47,806 INFO L124 PetriNetUnfolderBase]: 68/679 cut-off events. [2024-10-13 09:53:47,806 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-13 09:53:47,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 679 events. 68/679 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2933 event pairs, 1 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 472. Up to 16 conditions per place. [2024-10-13 09:53:47,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 248 transitions, 523 flow [2024-10-13 09:53:47,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 248 transitions, 523 flow [2024-10-13 09:53:47,816 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:53:47,816 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;@70518b12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:53:47,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-10-13 09:53:47,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:53:47,820 INFO L124 PetriNetUnfolderBase]: 2/58 cut-off events. [2024-10-13 09:53:47,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:53:47,820 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:47,820 INFO L204 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] [2024-10-13 09:53:47,820 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:53:47,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash 207561008, now seen corresponding path program 1 times [2024-10-13 09:53:47,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:47,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471015028] [2024-10-13 09:53:47,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:47,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:48,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:48,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471015028] [2024-10-13 09:53:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471015028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:48,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:53:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730288445] [2024-10-13 09:53:48,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:48,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:53:48,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:53:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:53:48,256 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 248 [2024-10-13 09:53:48,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 248 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 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) [2024-10-13 09:53:48,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:48,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 248 [2024-10-13 09:53:48,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:53:50,905 INFO L124 PetriNetUnfolderBase]: 8120/27225 cut-off events. [2024-10-13 09:53:50,906 INFO L125 PetriNetUnfolderBase]: For 557/557 co-relation queries the response was YES. [2024-10-13 09:53:50,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38960 conditions, 27225 events. 8120/27225 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 329474 event pairs, 710 based on Foata normal form. 6819/32244 useless extension candidates. Maximal degree in co-relation 6310. Up to 8631 conditions per place. [2024-10-13 09:53:51,047 INFO L140 encePairwiseOnDemand]: 221/248 looper letters, 84 selfloop transitions, 5 changer transitions 0/268 dead transitions. [2024-10-13 09:53:51,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 268 transitions, 741 flow [2024-10-13 09:53:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:53:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:53:51,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1251 transitions. [2024-10-13 09:53:51,050 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8407258064516129 [2024-10-13 09:53:51,050 INFO L175 Difference]: Start difference. First operand has 229 places, 248 transitions, 523 flow. Second operand 6 states and 1251 transitions. [2024-10-13 09:53:51,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 268 transitions, 741 flow [2024-10-13 09:53:51,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 268 transitions, 741 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:53:51,054 INFO L231 Difference]: Finished difference. Result has 227 places, 220 transitions, 477 flow [2024-10-13 09:53:51,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=477, PETRI_PLACES=227, PETRI_TRANSITIONS=220} [2024-10-13 09:53:51,054 INFO L277 CegarLoopForPetriNet]: 229 programPoint places, -2 predicate places. [2024-10-13 09:53:51,055 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 220 transitions, 477 flow [2024-10-13 09:53:51,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 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) [2024-10-13 09:53:51,055 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:53:51,055 INFO L204 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] [2024-10-13 09:53:51,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:53:51,056 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:53:51,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:53:51,056 INFO L85 PathProgramCache]: Analyzing trace with hash 817734999, now seen corresponding path program 1 times [2024-10-13 09:53:51,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:53:51,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144868892] [2024-10-13 09:53:51,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:53:51,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:53:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:53:51,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:53:51,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:53:51,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144868892] [2024-10-13 09:53:51,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144868892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:53:51,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:53:51,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:53:51,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486075796] [2024-10-13 09:53:51,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:53:51,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:53:51,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:53:51,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:53:51,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:53:51,099 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 248 [2024-10-13 09:53:51,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 220 transitions, 477 flow. Second operand has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2024-10-13 09:53:51,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:53:51,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 248 [2024-10-13 09:53:51,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:00,477 INFO L124 PetriNetUnfolderBase]: 27273/82674 cut-off events. [2024-10-13 09:54:00,478 INFO L125 PetriNetUnfolderBase]: For 2701/5221 co-relation queries the response was YES. [2024-10-13 09:54:00,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122337 conditions, 82674 events. 27273/82674 cut-off events. For 2701/5221 co-relation queries the response was YES. Maximal size of possible extension queue 1776. Compared 1099328 event pairs, 10995 based on Foata normal form. 29/74834 useless extension candidates. Maximal degree in co-relation 103722. Up to 25188 conditions per place. [2024-10-13 09:54:00,983 INFO L140 encePairwiseOnDemand]: 233/248 looper letters, 60 selfloop transitions, 10 changer transitions 0/249 dead transitions. [2024-10-13 09:54:00,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 249 transitions, 696 flow [2024-10-13 09:54:00,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:00,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2024-10-13 09:54:00,985 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2024-10-13 09:54:00,985 INFO L175 Difference]: Start difference. First operand has 227 places, 220 transitions, 477 flow. Second operand 3 states and 624 transitions. [2024-10-13 09:54:00,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 249 transitions, 696 flow [2024-10-13 09:54:00,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 249 transitions, 686 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:54:00,991 INFO L231 Difference]: Finished difference. Result has 224 places, 226 transitions, 541 flow [2024-10-13 09:54:00,992 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=541, PETRI_PLACES=224, PETRI_TRANSITIONS=226} [2024-10-13 09:54:00,992 INFO L277 CegarLoopForPetriNet]: 229 programPoint places, -5 predicate places. [2024-10-13 09:54:00,993 INFO L471 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 541 flow [2024-10-13 09:54:00,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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) [2024-10-13 09:54:00,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:00,993 INFO L204 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] [2024-10-13 09:54:00,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:54:00,993 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:54:00,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash -673769591, now seen corresponding path program 1 times [2024-10-13 09:54:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:00,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878827925] [2024-10-13 09:54:00,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:00,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:01,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:01,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:01,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878827925] [2024-10-13 09:54:01,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878827925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:01,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:01,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524106574] [2024-10-13 09:54:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:01,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:01,050 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 248 [2024-10-13 09:54:01,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 226 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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) [2024-10-13 09:54:01,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:01,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 248 [2024-10-13 09:54:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:08,895 INFO L124 PetriNetUnfolderBase]: 16710/68710 cut-off events. [2024-10-13 09:54:08,896 INFO L125 PetriNetUnfolderBase]: For 4175/5435 co-relation queries the response was YES. [2024-10-13 09:54:09,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98148 conditions, 68710 events. 16710/68710 cut-off events. For 4175/5435 co-relation queries the response was YES. Maximal size of possible extension queue 1361. Compared 986893 event pairs, 11681 based on Foata normal form. 1/62406 useless extension candidates. Maximal degree in co-relation 64880. Up to 20086 conditions per place. [2024-10-13 09:54:09,404 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 33 selfloop transitions, 2 changer transitions 0/231 dead transitions. [2024-10-13 09:54:09,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 231 transitions, 621 flow [2024-10-13 09:54:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:09,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2024-10-13 09:54:09,406 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8306451612903226 [2024-10-13 09:54:09,406 INFO L175 Difference]: Start difference. First operand has 224 places, 226 transitions, 541 flow. Second operand 3 states and 618 transitions. [2024-10-13 09:54:09,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 231 transitions, 621 flow [2024-10-13 09:54:09,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 231 transitions, 601 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:09,429 INFO L231 Difference]: Finished difference. Result has 225 places, 227 transitions, 533 flow [2024-10-13 09:54:09,429 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=533, PETRI_PLACES=225, PETRI_TRANSITIONS=227} [2024-10-13 09:54:09,430 INFO L277 CegarLoopForPetriNet]: 229 programPoint places, -4 predicate places. [2024-10-13 09:54:09,430 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 227 transitions, 533 flow [2024-10-13 09:54:09,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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) [2024-10-13 09:54:09,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:09,431 INFO L204 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] [2024-10-13 09:54:09,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:54:09,431 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:54:09,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:09,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1983260380, now seen corresponding path program 1 times [2024-10-13 09:54:09,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:09,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17709191] [2024-10-13 09:54:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:09,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:54:09,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:09,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17709191] [2024-10-13 09:54:09,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17709191] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:54:09,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642606348] [2024-10-13 09:54:09,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:09,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:09,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:09,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:54:09,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:54:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:09,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-13 09:54:09,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:54:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:09,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:54:09,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642606348] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:09,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:54:09,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-10-13 09:54:09,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567508914] [2024-10-13 09:54:09,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:09,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:09,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:09,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:09,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:09,592 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 248 [2024-10-13 09:54:09,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 227 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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) [2024-10-13 09:54:09,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:09,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 248 [2024-10-13 09:54:09,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:21,857 INFO L124 PetriNetUnfolderBase]: 28232/111672 cut-off events. [2024-10-13 09:54:21,857 INFO L125 PetriNetUnfolderBase]: For 1400/1400 co-relation queries the response was YES. [2024-10-13 09:54:22,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157872 conditions, 111672 events. 28232/111672 cut-off events. For 1400/1400 co-relation queries the response was YES. Maximal size of possible extension queue 2383. Compared 1724594 event pairs, 17335 based on Foata normal form. 247/102326 useless extension candidates. Maximal degree in co-relation 157810. Up to 22843 conditions per place. [2024-10-13 09:54:22,791 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 47 selfloop transitions, 2 changer transitions 0/246 dead transitions. [2024-10-13 09:54:22,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 246 transitions, 669 flow [2024-10-13 09:54:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:22,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:22,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 632 transitions. [2024-10-13 09:54:22,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8494623655913979 [2024-10-13 09:54:22,795 INFO L175 Difference]: Start difference. First operand has 225 places, 227 transitions, 533 flow. Second operand 3 states and 632 transitions. [2024-10-13 09:54:22,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 246 transitions, 669 flow [2024-10-13 09:54:22,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 246 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:54:22,806 INFO L231 Difference]: Finished difference. Result has 227 places, 228 transitions, 543 flow [2024-10-13 09:54:22,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=543, PETRI_PLACES=227, PETRI_TRANSITIONS=228} [2024-10-13 09:54:22,807 INFO L277 CegarLoopForPetriNet]: 229 programPoint places, -2 predicate places. [2024-10-13 09:54:22,807 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 228 transitions, 543 flow [2024-10-13 09:54:22,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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) [2024-10-13 09:54:22,808 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:22,808 INFO L204 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] [2024-10-13 09:54:22,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 09:54:23,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-13 09:54:23,012 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (and 8 more)] === [2024-10-13 09:54:23,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1189945337, now seen corresponding path program 1 times [2024-10-13 09:54:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:23,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969382235] [2024-10-13 09:54:23,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:23,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:23,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969382235] [2024-10-13 09:54:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969382235] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:54:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048352845] [2024-10-13 09:54:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:23,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:54:23,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:23,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:54:23,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:54:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:23,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:54:23,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:54:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:23,520 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:54:23,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 09:54:23,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048352845] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:54:23,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:54:23,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:54:23,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118258784] [2024-10-13 09:54:23,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:54:23,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:54:23,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:23,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:54:23,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:54:23,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 248 [2024-10-13 09:54:23,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 228 transitions, 543 flow. Second operand has 10 states, 10 states have (on average 193.1) internal successors, (1931), 10 states have internal predecessors, (1931), 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) [2024-10-13 09:54:23,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:23,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 248 [2024-10-13 09:54:23,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand