./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_51-mutexptr_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_51-mutexptr_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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:54:18,005 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:54:18,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:54:18,076 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:54:18,077 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:54:18,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:54:18,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:54:18,132 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:54:18,133 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:54:18,134 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:54:18,135 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:54:18,135 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:54:18,136 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:54:18,136 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:54:18,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:54:18,139 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:54:18,139 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:54:18,139 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:54:18,139 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:54:18,140 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:54:18,140 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:54:18,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:54:18,145 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:54:18,145 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:54:18,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:54:18,145 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:54:18,146 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:54:18,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:54:18,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:54:18,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:54:18,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:54:18,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:54:18,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:54:18,147 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:54:18,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:54:18,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:54:18,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:54:18,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:54:18,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:54:18,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:54:18,152 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:54:18,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e [2024-10-13 09:54:18,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:54:18,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:54:18,456 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:54:18,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:54:18,458 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:54:18,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-13 09:54:20,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:54:20,309 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:54:20,309 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2024-10-13 09:54:20,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac89f3c0/230800ac053247f49d84b0ebeeb43dc3/FLAG49078ff35 [2024-10-13 09:54:20,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac89f3c0/230800ac053247f49d84b0ebeeb43dc3 [2024-10-13 09:54:20,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:54:20,342 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:54:20,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:54:20,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:54:20,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:54:20,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e931443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20, skipping insertion in model container [2024-10-13 09:54:20,353 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,403 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:54:20,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:54:20,756 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:54:20,822 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:54:20,869 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:54:20,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20 WrapperNode [2024-10-13 09:54:20,870 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:54:20,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:54:20,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:54:20,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:54:20,879 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,931 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 120 [2024-10-13 09:54:20,935 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:54:20,936 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:54:20,936 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:54:20,936 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:54:20,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,952 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,970 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,974 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:54:20,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:54:20,983 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:54:20,983 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:54:20,984 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (1/1) ... [2024-10-13 09:54:20,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:54:21,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:54:21,019 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 09:54:21,023 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 09:54:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:54:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:54:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:54:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:54:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 09:54:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-13 09:54:21,077 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-13 09:54:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 09:54:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:54:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:54:21,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:54:21,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:54:21,079 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 09:54:21,215 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:54:21,217 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:54:21,585 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:54:21,586 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:54:21,640 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:54:21,642 INFO L314 CfgBuilder]: Removed 10 assume(true) statements. [2024-10-13 09:54:21,643 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:21 BoogieIcfgContainer [2024-10-13 09:54:21,643 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:54:21,646 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:54:21,646 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:54:21,650 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:54:21,650 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:54:20" (1/3) ... [2024-10-13 09:54:21,651 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43639686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:21, skipping insertion in model container [2024-10-13 09:54:21,651 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:54:20" (2/3) ... [2024-10-13 09:54:21,652 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43639686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:54:21, skipping insertion in model container [2024-10-13 09:54:21,652 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:54:21" (3/3) ... [2024-10-13 09:54:21,654 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2024-10-13 09:54:21,673 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:54:21,673 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2024-10-13 09:54:21,673 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:54:21,798 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-13 09:54:21,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 203 transitions, 413 flow [2024-10-13 09:54:21,933 INFO L124 PetriNetUnfolderBase]: 19/277 cut-off events. [2024-10-13 09:54:21,934 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:54:21,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 277 events. 19/277 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 850 event pairs, 0 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 152. Up to 4 conditions per place. [2024-10-13 09:54:21,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 203 transitions, 413 flow [2024-10-13 09:54:21,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 193 places, 203 transitions, 413 flow [2024-10-13 09:54:21,958 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:21,965 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;@3a292027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:21,966 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-13 09:54:21,978 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:21,979 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-10-13 09:54:21,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:21,980 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:21,981 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] [2024-10-13 09:54:21,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-13 09:54:21,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:21,987 INFO L85 PathProgramCache]: Analyzing trace with hash -2077782962, now seen corresponding path program 1 times [2024-10-13 09:54:21,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:21,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741829102] [2024-10-13 09:54:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:22,284 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 09:54:22,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:22,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741829102] [2024-10-13 09:54:22,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741829102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:22,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:22,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:22,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549391810] [2024-10-13 09:54:22,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:22,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:22,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:22,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:22,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:22,382 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 203 [2024-10-13 09:54:22,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 203 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 09:54:22,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:22,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 203 [2024-10-13 09:54:22,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:22,631 INFO L124 PetriNetUnfolderBase]: 73/854 cut-off events. [2024-10-13 09:54:22,631 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 09:54:22,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 854 events. 73/854 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4450 event pairs, 72 based on Foata normal form. 84/850 useless extension candidates. Maximal degree in co-relation 899. Up to 175 conditions per place. [2024-10-13 09:54:22,643 INFO L140 encePairwiseOnDemand]: 188/203 looper letters, 22 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2024-10-13 09:54:22,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 188 transitions, 431 flow [2024-10-13 09:54:22,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:22,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:22,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2024-10-13 09:54:22,665 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8735632183908046 [2024-10-13 09:54:22,668 INFO L175 Difference]: Start difference. First operand has 193 places, 203 transitions, 413 flow. Second operand 3 states and 532 transitions. [2024-10-13 09:54:22,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 188 transitions, 431 flow [2024-10-13 09:54:22,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 188 transitions, 431 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:22,679 INFO L231 Difference]: Finished difference. Result has 192 places, 188 transitions, 387 flow [2024-10-13 09:54:22,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=387, PETRI_PLACES=192, PETRI_TRANSITIONS=188} [2024-10-13 09:54:22,689 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, -1 predicate places. [2024-10-13 09:54:22,689 INFO L471 AbstractCegarLoop]: Abstraction has has 192 places, 188 transitions, 387 flow [2024-10-13 09:54:22,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 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 09:54:22,690 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:22,690 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] [2024-10-13 09:54:22,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:54:22,692 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-13 09:54:22,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1448886488, now seen corresponding path program 1 times [2024-10-13 09:54:22,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:22,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981141363] [2024-10-13 09:54:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:22,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:22,876 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 09:54:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:22,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981141363] [2024-10-13 09:54:22,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981141363] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:22,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:22,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:22,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78990070] [2024-10-13 09:54:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:22,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:22,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:22,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:22,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:22,908 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 203 [2024-10-13 09:54:22,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 188 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 09:54:22,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:22,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 203 [2024-10-13 09:54:22,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:23,057 INFO L124 PetriNetUnfolderBase]: 48/677 cut-off events. [2024-10-13 09:54:23,058 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 09:54:23,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 677 events. 48/677 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3125 event pairs, 0 based on Foata normal form. 1/600 useless extension candidates. Maximal degree in co-relation 752. Up to 108 conditions per place. [2024-10-13 09:54:23,063 INFO L140 encePairwiseOnDemand]: 200/203 looper letters, 22 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2024-10-13 09:54:23,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 194 transitions, 447 flow [2024-10-13 09:54:23,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2024-10-13 09:54:23,069 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8883415435139573 [2024-10-13 09:54:23,069 INFO L175 Difference]: Start difference. First operand has 192 places, 188 transitions, 387 flow. Second operand 3 states and 541 transitions. [2024-10-13 09:54:23,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 194 transitions, 447 flow [2024-10-13 09:54:23,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 194 transitions, 443 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:23,082 INFO L231 Difference]: Finished difference. Result has 193 places, 188 transitions, 391 flow [2024-10-13 09:54:23,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=383, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=391, PETRI_PLACES=193, PETRI_TRANSITIONS=188} [2024-10-13 09:54:23,089 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, 0 predicate places. [2024-10-13 09:54:23,093 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 188 transitions, 391 flow [2024-10-13 09:54:23,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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 09:54:23,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:23,094 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] [2024-10-13 09:54:23,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:54:23,095 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-13 09:54:23,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:23,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1621023741, now seen corresponding path program 1 times [2024-10-13 09:54:23,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:23,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664157899] [2024-10-13 09:54:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:23,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:23,735 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 09:54:23,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:23,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664157899] [2024-10-13 09:54:23,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664157899] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:23,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:23,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:54:23,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404421938] [2024-10-13 09:54:23,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:23,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:54:23,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:23,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:54:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:23,984 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 203 [2024-10-13 09:54:23,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 188 transitions, 391 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 09:54:23,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:23,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 203 [2024-10-13 09:54:23,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:24,481 INFO L124 PetriNetUnfolderBase]: 578/2340 cut-off events. [2024-10-13 09:54:24,482 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-10-13 09:54:24,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3641 conditions, 2340 events. 578/2340 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 16691 event pairs, 343 based on Foata normal form. 0/2124 useless extension candidates. Maximal degree in co-relation 3517. Up to 1071 conditions per place. [2024-10-13 09:54:24,496 INFO L140 encePairwiseOnDemand]: 180/203 looper letters, 73 selfloop transitions, 70 changer transitions 0/281 dead transitions. [2024-10-13 09:54:24,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 281 transitions, 866 flow [2024-10-13 09:54:24,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:54:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:54:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 984 transitions. [2024-10-13 09:54:24,501 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8078817733990148 [2024-10-13 09:54:24,501 INFO L175 Difference]: Start difference. First operand has 193 places, 188 transitions, 391 flow. Second operand 6 states and 984 transitions. [2024-10-13 09:54:24,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 281 transitions, 866 flow [2024-10-13 09:54:24,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 281 transitions, 860 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:24,510 INFO L231 Difference]: Finished difference. Result has 201 places, 257 transitions, 850 flow [2024-10-13 09:54:24,511 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=850, PETRI_PLACES=201, PETRI_TRANSITIONS=257} [2024-10-13 09:54:24,512 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, 8 predicate places. [2024-10-13 09:54:24,513 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 257 transitions, 850 flow [2024-10-13 09:54:24,514 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 09:54:24,514 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:24,514 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] [2024-10-13 09:54:24,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 09:54:24,515 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-13 09:54:24,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash -43087686, now seen corresponding path program 1 times [2024-10-13 09:54:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:24,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140117845] [2024-10-13 09:54:24,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:24,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:24,555 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 09:54:24,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:24,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140117845] [2024-10-13 09:54:24,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140117845] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:24,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:24,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:24,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105448041] [2024-10-13 09:54:24,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:24,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:24,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:24,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:24,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 203 [2024-10-13 09:54:24,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 257 transitions, 850 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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 09:54:24,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:24,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 203 [2024-10-13 09:54:24,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:24,785 INFO L124 PetriNetUnfolderBase]: 245/1546 cut-off events. [2024-10-13 09:54:24,785 INFO L125 PetriNetUnfolderBase]: For 105/130 co-relation queries the response was YES. [2024-10-13 09:54:24,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 1546 events. 245/1546 cut-off events. For 105/130 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 10340 event pairs, 110 based on Foata normal form. 0/1443 useless extension candidates. Maximal degree in co-relation 2293. Up to 299 conditions per place. [2024-10-13 09:54:24,794 INFO L140 encePairwiseOnDemand]: 195/203 looper letters, 25 selfloop transitions, 2 changer transitions 0/253 dead transitions. [2024-10-13 09:54:24,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 253 transitions, 896 flow [2024-10-13 09:54:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:24,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 510 transitions. [2024-10-13 09:54:24,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8374384236453202 [2024-10-13 09:54:24,797 INFO L175 Difference]: Start difference. First operand has 201 places, 257 transitions, 850 flow. Second operand 3 states and 510 transitions. [2024-10-13 09:54:24,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 253 transitions, 896 flow [2024-10-13 09:54:24,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 253 transitions, 896 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:24,808 INFO L231 Difference]: Finished difference. Result has 198 places, 253 transitions, 852 flow [2024-10-13 09:54:24,809 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=203, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=852, PETRI_PLACES=198, PETRI_TRANSITIONS=253} [2024-10-13 09:54:24,810 INFO L277 CegarLoopForPetriNet]: 193 programPoint places, 5 predicate places. [2024-10-13 09:54:24,811 INFO L471 AbstractCegarLoop]: Abstraction has has 198 places, 253 transitions, 852 flow [2024-10-13 09:54:24,811 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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 09:54:24,812 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:24,812 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:54:24,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 09:54:24,812 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2024-10-13 09:54:24,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:24,813 INFO L85 PathProgramCache]: Analyzing trace with hash 918752132, now seen corresponding path program 1 times [2024-10-13 09:54:24,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:24,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246401871] [2024-10-13 09:54:24,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:24,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:24,848 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:54:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:54:24,898 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:54:24,899 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:54:24,900 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-13 09:54:24,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-13 09:54:24,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-13 09:54:24,902 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-13 09:54:24,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-13 09:54:24,903 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-13 09:54:24,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-13 09:54:24,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-13 09:54:24,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-13 09:54:24,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-13 09:54:24,904 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-13 09:54:24,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-13 09:54:24,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-13 09:54:24,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-13 09:54:24,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-13 09:54:24,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-13 09:54:24,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-13 09:54:24,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-13 09:54:24,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-13 09:54:24,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-13 09:54:24,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-13 09:54:24,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-13 09:54:24,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:54:24,909 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-13 09:54:24,911 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:54:24,911 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:54:24,952 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-13 09:54:24,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 280 transitions, 576 flow [2024-10-13 09:54:25,009 INFO L124 PetriNetUnfolderBase]: 34/456 cut-off events. [2024-10-13 09:54:25,010 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-13 09:54:25,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 456 events. 34/456 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1772 event pairs, 0 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 279. Up to 8 conditions per place. [2024-10-13 09:54:25,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 280 transitions, 576 flow [2024-10-13 09:54:25,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 280 transitions, 576 flow [2024-10-13 09:54:25,026 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:54:25,027 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;@3a292027, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:54:25,029 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-13 09:54:25,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:54:25,032 INFO L124 PetriNetUnfolderBase]: 0/40 cut-off events. [2024-10-13 09:54:25,032 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:54:25,032 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:25,032 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] [2024-10-13 09:54:25,032 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-13 09:54:25,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash 511889766, now seen corresponding path program 1 times [2024-10-13 09:54:25,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:25,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646023452] [2024-10-13 09:54:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:25,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:25,061 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 09:54:25,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:25,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646023452] [2024-10-13 09:54:25,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646023452] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:25,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:25,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:25,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772106622] [2024-10-13 09:54:25,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:25,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:25,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:25,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:25,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 280 [2024-10-13 09:54:25,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 280 transitions, 576 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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 09:54:25,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:25,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 280 [2024-10-13 09:54:25,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:26,712 INFO L124 PetriNetUnfolderBase]: 1642/9347 cut-off events. [2024-10-13 09:54:26,714 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-10-13 09:54:26,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12080 conditions, 9347 events. 1642/9347 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 97678 event pairs, 1629 based on Foata normal form. 1315/9739 useless extension candidates. Maximal degree in co-relation 10772. Up to 2673 conditions per place. [2024-10-13 09:54:26,790 INFO L140 encePairwiseOnDemand]: 259/280 looper letters, 33 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2024-10-13 09:54:26,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 259 transitions, 604 flow [2024-10-13 09:54:26,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:26,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:26,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 729 transitions. [2024-10-13 09:54:26,793 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8678571428571429 [2024-10-13 09:54:26,793 INFO L175 Difference]: Start difference. First operand has 265 places, 280 transitions, 576 flow. Second operand 3 states and 729 transitions. [2024-10-13 09:54:26,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 259 transitions, 604 flow [2024-10-13 09:54:26,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 259 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:26,799 INFO L231 Difference]: Finished difference. Result has 264 places, 259 transitions, 538 flow [2024-10-13 09:54:26,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=538, PETRI_PLACES=264, PETRI_TRANSITIONS=259} [2024-10-13 09:54:26,800 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, -1 predicate places. [2024-10-13 09:54:26,802 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 259 transitions, 538 flow [2024-10-13 09:54:26,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 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 09:54:26,802 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:26,802 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] [2024-10-13 09:54:26,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:54:26,803 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-13 09:54:26,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1486845736, now seen corresponding path program 1 times [2024-10-13 09:54:26,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994454729] [2024-10-13 09:54:26,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:26,842 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 09:54:26,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994454729] [2024-10-13 09:54:26,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994454729] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:26,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:26,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:54:26,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606274964] [2024-10-13 09:54:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:26,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:26,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:26,872 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 280 [2024-10-13 09:54:26,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 259 transitions, 538 flow. Second operand has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 09:54:26,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:26,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 280 [2024-10-13 09:54:26,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:27,756 INFO L124 PetriNetUnfolderBase]: 788/5475 cut-off events. [2024-10-13 09:54:27,757 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-10-13 09:54:27,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 5475 events. 788/5475 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 53425 event pairs, 774 based on Foata normal form. 1/4830 useless extension candidates. Maximal degree in co-relation 6781. Up to 1303 conditions per place. [2024-10-13 09:54:27,912 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 31 selfloop transitions, 2 changer transitions 0/266 dead transitions. [2024-10-13 09:54:27,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 266 transitions, 618 flow [2024-10-13 09:54:27,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:27,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:27,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 739 transitions. [2024-10-13 09:54:27,919 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8797619047619047 [2024-10-13 09:54:27,919 INFO L175 Difference]: Start difference. First operand has 264 places, 259 transitions, 538 flow. Second operand 3 states and 739 transitions. [2024-10-13 09:54:27,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 266 transitions, 618 flow [2024-10-13 09:54:27,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 266 transitions, 614 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 09:54:27,926 INFO L231 Difference]: Finished difference. Result has 265 places, 260 transitions, 546 flow [2024-10-13 09:54:27,927 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=546, PETRI_PLACES=265, PETRI_TRANSITIONS=260} [2024-10-13 09:54:27,928 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 0 predicate places. [2024-10-13 09:54:27,929 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 260 transitions, 546 flow [2024-10-13 09:54:27,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 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 09:54:27,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:27,930 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] [2024-10-13 09:54:27,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:54:27,930 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-13 09:54:27,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:27,930 INFO L85 PathProgramCache]: Analyzing trace with hash -875981565, now seen corresponding path program 1 times [2024-10-13 09:54:27,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:27,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468517905] [2024-10-13 09:54:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:27,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:28,290 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 09:54:28,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:28,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468517905] [2024-10-13 09:54:28,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468517905] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:28,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:28,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:54:28,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571925380] [2024-10-13 09:54:28,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:28,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:54:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:54:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:28,551 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 280 [2024-10-13 09:54:28,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 260 transitions, 546 flow. Second operand has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 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 09:54:28,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:28,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 280 [2024-10-13 09:54:28,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:37,656 INFO L124 PetriNetUnfolderBase]: 29144/72190 cut-off events. [2024-10-13 09:54:37,657 INFO L125 PetriNetUnfolderBase]: For 1369/1369 co-relation queries the response was YES. [2024-10-13 09:54:37,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118399 conditions, 72190 events. 29144/72190 cut-off events. For 1369/1369 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 840593 event pairs, 19095 based on Foata normal form. 0/66409 useless extension candidates. Maximal degree in co-relation 108393. Up to 40528 conditions per place. [2024-10-13 09:54:38,220 INFO L140 encePairwiseOnDemand]: 241/280 looper letters, 123 selfloop transitions, 135 changer transitions 0/443 dead transitions. [2024-10-13 09:54:38,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 443 transitions, 1438 flow [2024-10-13 09:54:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:54:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:54:38,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1379 transitions. [2024-10-13 09:54:38,225 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8208333333333333 [2024-10-13 09:54:38,225 INFO L175 Difference]: Start difference. First operand has 265 places, 260 transitions, 546 flow. Second operand 6 states and 1379 transitions. [2024-10-13 09:54:38,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 443 transitions, 1438 flow [2024-10-13 09:54:38,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 443 transitions, 1435 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:54:38,261 INFO L231 Difference]: Finished difference. Result has 274 places, 394 transitions, 1434 flow [2024-10-13 09:54:38,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1434, PETRI_PLACES=274, PETRI_TRANSITIONS=394} [2024-10-13 09:54:38,263 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 9 predicate places. [2024-10-13 09:54:38,263 INFO L471 AbstractCegarLoop]: Abstraction has has 274 places, 394 transitions, 1434 flow [2024-10-13 09:54:38,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.5) internal successors, (1131), 6 states have internal predecessors, (1131), 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 09:54:38,264 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:38,265 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] [2024-10-13 09:54:38,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-13 09:54:38,265 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-13 09:54:38,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:38,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1236523343, now seen corresponding path program 1 times [2024-10-13 09:54:38,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:38,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693963152] [2024-10-13 09:54:38,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:38,314 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 09:54:38,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:38,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693963152] [2024-10-13 09:54:38,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693963152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:38,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:38,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 09:54:38,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393215147] [2024-10-13 09:54:38,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:38,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:54:38,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:54:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:54:38,355 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 280 [2024-10-13 09:54:38,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 394 transitions, 1434 flow. Second operand has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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 09:54:38,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:38,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 280 [2024-10-13 09:54:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:54:44,282 INFO L124 PetriNetUnfolderBase]: 14894/50489 cut-off events. [2024-10-13 09:54:44,283 INFO L125 PetriNetUnfolderBase]: For 5290/5883 co-relation queries the response was YES. [2024-10-13 09:54:44,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86693 conditions, 50489 events. 14894/50489 cut-off events. For 5290/5883 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 636308 event pairs, 9103 based on Foata normal form. 0/46792 useless extension candidates. Maximal degree in co-relation 75640. Up to 14377 conditions per place. [2024-10-13 09:54:44,715 INFO L140 encePairwiseOnDemand]: 268/280 looper letters, 40 selfloop transitions, 3 changer transitions 0/389 dead transitions. [2024-10-13 09:54:44,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 389 transitions, 1515 flow [2024-10-13 09:54:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:54:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:54:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2024-10-13 09:54:44,718 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8226190476190476 [2024-10-13 09:54:44,718 INFO L175 Difference]: Start difference. First operand has 274 places, 394 transitions, 1434 flow. Second operand 3 states and 691 transitions. [2024-10-13 09:54:44,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 389 transitions, 1515 flow [2024-10-13 09:54:44,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 389 transitions, 1515 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:54:44,842 INFO L231 Difference]: Finished difference. Result has 268 places, 388 transitions, 1437 flow [2024-10-13 09:54:44,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1437, PETRI_PLACES=268, PETRI_TRANSITIONS=388} [2024-10-13 09:54:44,844 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 3 predicate places. [2024-10-13 09:54:44,845 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 388 transitions, 1437 flow [2024-10-13 09:54:44,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.33333333333334) internal successors, (643), 3 states have internal predecessors, (643), 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 09:54:44,846 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:54:44,846 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] [2024-10-13 09:54:44,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-13 09:54:44,847 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-13 09:54:44,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:54:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash 521167873, now seen corresponding path program 1 times [2024-10-13 09:54:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:54:44,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424114324] [2024-10-13 09:54:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:54:44,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:54:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:54:45,407 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 09:54:45,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:54:45,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424114324] [2024-10-13 09:54:45,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424114324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:54:45,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:54:45,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:54:45,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026206680] [2024-10-13 09:54:45,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:54:45,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:54:45,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:54:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:54:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:54:45,820 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 280 [2024-10-13 09:54:45,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 388 transitions, 1437 flow. Second operand has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 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 09:54:45,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:54:45,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 280 [2024-10-13 09:54:45,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:55:05,718 INFO L124 PetriNetUnfolderBase]: 71701/172000 cut-off events. [2024-10-13 09:55:05,718 INFO L125 PetriNetUnfolderBase]: For 43709/48167 co-relation queries the response was YES. [2024-10-13 09:55:06,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358641 conditions, 172000 events. 71701/172000 cut-off events. For 43709/48167 co-relation queries the response was YES. Maximal size of possible extension queue 2876. Compared 2182784 event pairs, 14346 based on Foata normal form. 67/162476 useless extension candidates. Maximal degree in co-relation 352914. Up to 49105 conditions per place. [2024-10-13 09:55:07,534 INFO L140 encePairwiseOnDemand]: 226/280 looper letters, 493 selfloop transitions, 227 changer transitions 0/902 dead transitions. [2024-10-13 09:55:07,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 902 transitions, 5153 flow [2024-10-13 09:55:07,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:55:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:55:07,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1483 transitions. [2024-10-13 09:55:07,541 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8827380952380952 [2024-10-13 09:55:07,541 INFO L175 Difference]: Start difference. First operand has 268 places, 388 transitions, 1437 flow. Second operand 6 states and 1483 transitions. [2024-10-13 09:55:07,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 902 transitions, 5153 flow [2024-10-13 09:55:07,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 902 transitions, 5153 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:55:07,858 INFO L231 Difference]: Finished difference. Result has 278 places, 627 transitions, 3813 flow [2024-10-13 09:55:07,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3813, PETRI_PLACES=278, PETRI_TRANSITIONS=627} [2024-10-13 09:55:07,860 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 13 predicate places. [2024-10-13 09:55:07,860 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 627 transitions, 3813 flow [2024-10-13 09:55:07,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 188.16666666666666) internal successors, (1129), 6 states have internal predecessors, (1129), 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 09:55:07,861 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:55:07,861 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:55:07,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:55:07,861 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-13 09:55:07,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:55:07,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1363631754, now seen corresponding path program 1 times [2024-10-13 09:55:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:55:07,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499182102] [2024-10-13 09:55:07,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:55:07,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:55:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:55:08,250 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 09:55:08,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:55:08,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499182102] [2024-10-13 09:55:08,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499182102] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:55:08,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:55:08,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:55:08,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75819176] [2024-10-13 09:55:08,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:55:08,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:55:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:55:08,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:55:08,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:55:08,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 280 [2024-10-13 09:55:08,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 627 transitions, 3813 flow. Second operand has 6 states, 6 states have (on average 187.16666666666666) internal successors, (1123), 6 states have internal predecessors, (1123), 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 09:55:08,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:55:08,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 280 [2024-10-13 09:55:08,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand