./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_22-deref_read_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 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_22-deref_read_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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:27:26,097 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:27:26,137 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:27:26,141 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:27:26,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:27:26,156 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:27:26,157 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:27:26,157 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:27:26,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:27:26,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:27:26,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:27:26,159 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:27:26,159 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:27:26,160 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:27:26,160 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:27:26,160 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:27:26,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:27:26,161 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:27:26,161 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:27:26,161 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:27:26,162 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:27:26,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:27:26,166 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:27:26,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:27:26,166 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:27:26,167 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:27:26,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:27:26,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:27:26,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:27:26,168 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:27:26,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:27:26,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:27:26,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:27:26,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:27:26,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:27:26,169 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:27:26,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:27:26,169 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:27:26,170 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:27:26,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:27:26,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:27:26,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 [2024-10-24 15:27:26,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:27:26,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:27:26,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:27:26,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:27:26,392 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:27:26,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-10-24 15:27:27,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:27:27,881 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:27:27,882 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_22-deref_read_racefree.i [2024-10-24 15:27:27,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcf6f3e2/71ae15487d704f8e8ac50c8ba4050ec9/FLAGc03282600 [2024-10-24 15:27:28,260 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffcf6f3e2/71ae15487d704f8e8ac50c8ba4050ec9 [2024-10-24 15:27:28,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:27:28,263 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:27:28,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:27:28,264 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:27:28,269 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:27:28,269 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,270 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335190d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28, skipping insertion in model container [2024-10-24 15:27:28,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:27:28,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:27:28,611 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:27:28,656 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:27:28,688 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:27:28,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28 WrapperNode [2024-10-24 15:27:28,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:27:28,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:27:28,690 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:27:28,690 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:27:28,696 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,732 INFO L138 Inliner]: procedures = 170, calls = 38, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 83 [2024-10-24 15:27:28,733 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:27:28,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:27:28,734 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:27:28,734 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:27:28,744 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:27:28,801 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:27:28,801 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:27:28,801 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:27:28,802 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (1/1) ... [2024-10-24 15:27:28,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:27:28,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:28,850 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) [2024-10-24 15:27:28,852 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 [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-24 15:27:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 15:27:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:27:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:27:28,889 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:27:28,990 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:27:28,992 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:27:29,213 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:27:29,214 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:27:29,252 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:27:29,252 INFO L314 CfgBuilder]: Removed 9 assume(true) statements. [2024-10-24 15:27:29,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:27:29 BoogieIcfgContainer [2024-10-24 15:27:29,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:27:29,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:27:29,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:27:29,257 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:27:29,257 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:27:28" (1/3) ... [2024-10-24 15:27:29,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6185f6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:27:29, skipping insertion in model container [2024-10-24 15:27:29,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:27:28" (2/3) ... [2024-10-24 15:27:29,258 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6185f6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:27:29, skipping insertion in model container [2024-10-24 15:27:29,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:27:29" (3/3) ... [2024-10-24 15:27:29,259 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2024-10-24 15:27:29,274 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:27:29,275 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-10-24 15:27:29,275 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:27:29,339 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:27:29,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 158 transitions, 320 flow [2024-10-24 15:27:29,450 INFO L124 PetriNetUnfolderBase]: 16/213 cut-off events. [2024-10-24 15:27:29,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:27:29,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 213 events. 16/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 619 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2024-10-24 15:27:29,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 158 transitions, 320 flow [2024-10-24 15:27:29,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 158 transitions, 320 flow [2024-10-24 15:27:29,480 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:27:29,487 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;@2823d6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:27:29,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 15:27:29,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:27:29,505 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-24 15:27:29,505 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:27:29,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:29,506 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] [2024-10-24 15:27:29,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:27:29,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:29,516 INFO L85 PathProgramCache]: Analyzing trace with hash -2139724163, now seen corresponding path program 1 times [2024-10-24 15:27:29,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:29,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518518819] [2024-10-24 15:27:29,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:29,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:29,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:29,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518518819] [2024-10-24 15:27:29,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518518819] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:29,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:29,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:27:29,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531506069] [2024-10-24 15:27:29,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:29,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:29,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:29,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:29,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:29,892 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 158 [2024-10-24 15:27:29,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 158 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2024-10-24 15:27:29,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:29,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 158 [2024-10-24 15:27:29,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:30,034 INFO L124 PetriNetUnfolderBase]: 48/581 cut-off events. [2024-10-24 15:27:30,035 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-24 15:27:30,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 581 events. 48/581 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2754 event pairs, 35 based on Foata normal form. 55/575 useless extension candidates. Maximal degree in co-relation 655. Up to 106 conditions per place. [2024-10-24 15:27:30,042 INFO L140 encePairwiseOnDemand]: 144/158 looper letters, 21 selfloop transitions, 2 changer transitions 0/151 dead transitions. [2024-10-24 15:27:30,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 151 transitions, 352 flow [2024-10-24 15:27:30,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:30,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:30,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2024-10-24 15:27:30,057 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9050632911392406 [2024-10-24 15:27:30,059 INFO L175 Difference]: Start difference. First operand has 150 places, 158 transitions, 320 flow. Second operand 3 states and 429 transitions. [2024-10-24 15:27:30,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 151 transitions, 352 flow [2024-10-24 15:27:30,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 151 transitions, 352 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:27:30,069 INFO L231 Difference]: Finished difference. Result has 151 places, 145 transitions, 302 flow [2024-10-24 15:27:30,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=151, PETRI_TRANSITIONS=145} [2024-10-24 15:27:30,075 INFO L277 CegarLoopForPetriNet]: 150 programPoint places, 1 predicate places. [2024-10-24 15:27:30,075 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 145 transitions, 302 flow [2024-10-24 15:27:30,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2024-10-24 15:27:30,076 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:30,076 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] [2024-10-24 15:27:30,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:27:30,076 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:27:30,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:30,078 INFO L85 PathProgramCache]: Analyzing trace with hash 334440198, now seen corresponding path program 1 times [2024-10-24 15:27:30,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389939277] [2024-10-24 15:27:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:30,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389939277] [2024-10-24 15:27:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389939277] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831345808] [2024-10-24 15:27:30,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:30,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:30,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:30,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:30,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 15:27:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:30,268 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:30,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:30,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:30,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831345808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:30,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:30,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-24 15:27:30,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636220624] [2024-10-24 15:27:30,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:30,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:30,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:30,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:30,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:30,298 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 158 [2024-10-24 15:27:30,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 145 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2024-10-24 15:27:30,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:30,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 158 [2024-10-24 15:27:30,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:30,364 INFO L124 PetriNetUnfolderBase]: 60/618 cut-off events. [2024-10-24 15:27:30,366 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:27:30,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 766 conditions, 618 events. 60/618 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3013 event pairs, 40 based on Foata normal form. 0/571 useless extension candidates. Maximal degree in co-relation 722. Up to 134 conditions per place. [2024-10-24 15:27:30,375 INFO L140 encePairwiseOnDemand]: 153/158 looper letters, 19 selfloop transitions, 2 changer transitions 0/146 dead transitions. [2024-10-24 15:27:30,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 146 transitions, 346 flow [2024-10-24 15:27:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2024-10-24 15:27:30,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8481012658227848 [2024-10-24 15:27:30,377 INFO L175 Difference]: Start difference. First operand has 151 places, 145 transitions, 302 flow. Second operand 3 states and 402 transitions. [2024-10-24 15:27:30,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 146 transitions, 346 flow [2024-10-24 15:27:30,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 146 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:27:30,380 INFO L231 Difference]: Finished difference. Result has 149 places, 144 transitions, 306 flow [2024-10-24 15:27:30,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=149, PETRI_TRANSITIONS=144} [2024-10-24 15:27:30,381 INFO L277 CegarLoopForPetriNet]: 150 programPoint places, -1 predicate places. [2024-10-24 15:27:30,381 INFO L471 AbstractCegarLoop]: Abstraction has has 149 places, 144 transitions, 306 flow [2024-10-24 15:27:30,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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) [2024-10-24 15:27:30,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:30,382 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-24 15:27:30,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 15:27:30,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:30,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-24 15:27:30,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:30,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1778246148, now seen corresponding path program 1 times [2024-10-24 15:27:30,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:30,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842999870] [2024-10-24 15:27:30,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:30,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:30,597 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:27:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:30,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:27:30,621 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:27:30,621 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-24 15:27:30,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-24 15:27:30,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-24 15:27:30,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-24 15:27:30,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-24 15:27:30,623 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-24 15:27:30,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-24 15:27:30,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-24 15:27:30,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-24 15:27:30,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-24 15:27:30,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-24 15:27:30,624 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-24 15:27:30,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-24 15:27:30,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-24 15:27:30,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-24 15:27:30,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-24 15:27:30,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-24 15:27:30,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:27:30,626 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-24 15:27:30,628 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:27:30,628 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:27:30,650 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:27:30,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 216 places, 228 transitions, 466 flow [2024-10-24 15:27:30,696 INFO L124 PetriNetUnfolderBase]: 27/341 cut-off events. [2024-10-24 15:27:30,696 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:27:30,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 341 events. 27/341 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1368 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 214. Up to 6 conditions per place. [2024-10-24 15:27:30,706 INFO L82 GeneralOperation]: Start removeDead. Operand has 216 places, 228 transitions, 466 flow [2024-10-24 15:27:30,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 228 transitions, 466 flow [2024-10-24 15:27:30,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:27:30,714 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;@2823d6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:27:30,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-24 15:27:30,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:27:30,721 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-24 15:27:30,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:27:30,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:30,722 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] [2024-10-24 15:27:30,722 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-24 15:27:30,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2076926111, now seen corresponding path program 1 times [2024-10-24 15:27:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:30,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882243712] [2024-10-24 15:27:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:30,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:30,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:30,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:30,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882243712] [2024-10-24 15:27:30,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882243712] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:30,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:30,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:27:30,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371827694] [2024-10-24 15:27:30,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:30,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:30,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:30,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:30,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 228 [2024-10-24 15:27:30,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 228 transitions, 466 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2024-10-24 15:27:30,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:30,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 228 [2024-10-24 15:27:30,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:31,424 INFO L124 PetriNetUnfolderBase]: 762/5494 cut-off events. [2024-10-24 15:27:31,424 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-10-24 15:27:31,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6789 conditions, 5494 events. 762/5494 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 54455 event pairs, 336 based on Foata normal form. 681/5647 useless extension candidates. Maximal degree in co-relation 917. Up to 1261 conditions per place. [2024-10-24 15:27:31,456 INFO L140 encePairwiseOnDemand]: 208/228 looper letters, 29 selfloop transitions, 2 changer transitions 0/216 dead transitions. [2024-10-24 15:27:31,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 216 transitions, 504 flow [2024-10-24 15:27:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:31,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:31,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 614 transitions. [2024-10-24 15:27:31,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8976608187134503 [2024-10-24 15:27:31,459 INFO L175 Difference]: Start difference. First operand has 216 places, 228 transitions, 466 flow. Second operand 3 states and 614 transitions. [2024-10-24 15:27:31,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 216 transitions, 504 flow [2024-10-24 15:27:31,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 216 transitions, 504 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:27:31,464 INFO L231 Difference]: Finished difference. Result has 217 places, 210 transitions, 440 flow [2024-10-24 15:27:31,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=217, PETRI_TRANSITIONS=210} [2024-10-24 15:27:31,467 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, 1 predicate places. [2024-10-24 15:27:31,467 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 210 transitions, 440 flow [2024-10-24 15:27:31,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2024-10-24 15:27:31,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:31,467 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] [2024-10-24 15:27:31,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 15:27:31,467 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-24 15:27:31,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:31,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1304754683, now seen corresponding path program 1 times [2024-10-24 15:27:31,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:31,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64255446] [2024-10-24 15:27:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:31,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:31,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:31,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64255446] [2024-10-24 15:27:31,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64255446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:31,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554327308] [2024-10-24 15:27:31,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:31,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:31,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:31,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:31,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 15:27:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:31,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:31,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:31,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:31,629 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:31,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554327308] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:31,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:31,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-24 15:27:31,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109788529] [2024-10-24 15:27:31,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:31,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:31,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:31,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:31,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:31,645 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 228 [2024-10-24 15:27:31,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 210 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2024-10-24 15:27:31,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:31,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 228 [2024-10-24 15:27:31,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:32,465 INFO L124 PetriNetUnfolderBase]: 1490/8251 cut-off events. [2024-10-24 15:27:32,465 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-10-24 15:27:32,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 8251 events. 1490/8251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 86869 event pairs, 1046 based on Foata normal form. 0/7650 useless extension candidates. Maximal degree in co-relation 10664. Up to 2396 conditions per place. [2024-10-24 15:27:32,501 INFO L140 encePairwiseOnDemand]: 220/228 looper letters, 33 selfloop transitions, 3 changer transitions 0/213 dead transitions. [2024-10-24 15:27:32,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 213 transitions, 523 flow [2024-10-24 15:27:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2024-10-24 15:27:32,503 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8362573099415205 [2024-10-24 15:27:32,503 INFO L175 Difference]: Start difference. First operand has 217 places, 210 transitions, 440 flow. Second operand 3 states and 572 transitions. [2024-10-24 15:27:32,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 213 transitions, 523 flow [2024-10-24 15:27:32,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 213 transitions, 521 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:27:32,507 INFO L231 Difference]: Finished difference. Result has 214 places, 208 transitions, 449 flow [2024-10-24 15:27:32,507 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=449, PETRI_PLACES=214, PETRI_TRANSITIONS=208} [2024-10-24 15:27:32,508 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, -2 predicate places. [2024-10-24 15:27:32,508 INFO L471 AbstractCegarLoop]: Abstraction has has 214 places, 208 transitions, 449 flow [2024-10-24 15:27:32,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 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) [2024-10-24 15:27:32,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:32,508 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:32,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 15:27:32,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:32,713 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-24 15:27:32,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:32,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1925053044, now seen corresponding path program 1 times [2024-10-24 15:27:32,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:32,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072238027] [2024-10-24 15:27:32,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:32,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:32,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:32,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:32,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072238027] [2024-10-24 15:27:32,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072238027] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:32,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207339290] [2024-10-24 15:27:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:32,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:32,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:32,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 15:27:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:32,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:32,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:32,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:32,826 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:32,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207339290] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:32,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:32,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-24 15:27:32,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853323379] [2024-10-24 15:27:32,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:32,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:32,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:32,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:32,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:32,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 228 [2024-10-24 15:27:32,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 208 transitions, 449 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2024-10-24 15:27:32,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:32,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 228 [2024-10-24 15:27:32,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:33,418 INFO L124 PetriNetUnfolderBase]: 1057/5033 cut-off events. [2024-10-24 15:27:33,419 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-24 15:27:33,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6864 conditions, 5033 events. 1057/5033 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 47164 event pairs, 854 based on Foata normal form. 0/4532 useless extension candidates. Maximal degree in co-relation 6133. Up to 1434 conditions per place. [2024-10-24 15:27:33,448 INFO L140 encePairwiseOnDemand]: 225/228 looper letters, 35 selfloop transitions, 2 changer transitions 0/219 dead transitions. [2024-10-24 15:27:33,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 219 transitions, 545 flow [2024-10-24 15:27:33,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:33,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:33,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2024-10-24 15:27:33,451 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8625730994152047 [2024-10-24 15:27:33,451 INFO L175 Difference]: Start difference. First operand has 214 places, 208 transitions, 449 flow. Second operand 3 states and 590 transitions. [2024-10-24 15:27:33,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 219 transitions, 545 flow [2024-10-24 15:27:33,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 219 transitions, 545 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:27:33,454 INFO L231 Difference]: Finished difference. Result has 215 places, 207 transitions, 451 flow [2024-10-24 15:27:33,455 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=215, PETRI_TRANSITIONS=207} [2024-10-24 15:27:33,455 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, -1 predicate places. [2024-10-24 15:27:33,456 INFO L471 AbstractCegarLoop]: Abstraction has has 215 places, 207 transitions, 451 flow [2024-10-24 15:27:33,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2024-10-24 15:27:33,456 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:33,456 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] [2024-10-24 15:27:33,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 15:27:33,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:33,658 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-24 15:27:33,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1712230884, now seen corresponding path program 1 times [2024-10-24 15:27:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:33,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584615547] [2024-10-24 15:27:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:33,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:33,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:33,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:33,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584615547] [2024-10-24 15:27:33,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584615547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:33,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:33,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:27:33,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254703924] [2024-10-24 15:27:33,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:33,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:27:33,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:27:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:34,137 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 228 [2024-10-24 15:27:34,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 207 transitions, 451 flow. Second operand has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 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) [2024-10-24 15:27:34,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:34,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 228 [2024-10-24 15:27:34,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:37,763 INFO L124 PetriNetUnfolderBase]: 14160/34092 cut-off events. [2024-10-24 15:27:37,764 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-10-24 15:27:37,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57500 conditions, 34092 events. 14160/34092 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 383271 event pairs, 4464 based on Foata normal form. 0/32872 useless extension candidates. Maximal degree in co-relation 56508. Up to 10096 conditions per place. [2024-10-24 15:27:38,032 INFO L140 encePairwiseOnDemand]: 184/228 looper letters, 219 selfloop transitions, 84 changer transitions 0/447 dead transitions. [2024-10-24 15:27:38,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 447 transitions, 1557 flow [2024-10-24 15:27:38,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:27:38,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:27:38,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1189 transitions. [2024-10-24 15:27:38,035 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8691520467836257 [2024-10-24 15:27:38,035 INFO L175 Difference]: Start difference. First operand has 215 places, 207 transitions, 451 flow. Second operand 6 states and 1189 transitions. [2024-10-24 15:27:38,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 447 transitions, 1557 flow [2024-10-24 15:27:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 447 transitions, 1553 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-24 15:27:38,043 INFO L231 Difference]: Finished difference. Result has 223 places, 299 transitions, 1079 flow [2024-10-24 15:27:38,044 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1079, PETRI_PLACES=223, PETRI_TRANSITIONS=299} [2024-10-24 15:27:38,045 INFO L277 CegarLoopForPetriNet]: 216 programPoint places, 7 predicate places. [2024-10-24 15:27:38,046 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 299 transitions, 1079 flow [2024-10-24 15:27:38,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.5) internal successors, (891), 6 states have internal predecessors, (891), 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) [2024-10-24 15:27:38,047 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:38,047 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:38,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:27:38,047 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-24 15:27:38,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:38,048 INFO L85 PathProgramCache]: Analyzing trace with hash 608904427, now seen corresponding path program 1 times [2024-10-24 15:27:38,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:38,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585872009] [2024-10-24 15:27:38,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:38,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:38,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:38,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:27:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:27:38,076 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:27:38,076 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:27:38,076 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-24 15:27:38,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-24 15:27:38,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-24 15:27:38,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-24 15:27:38,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-24 15:27:38,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 15:27:38,078 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-24 15:27:38,079 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:27:38,079 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:27:38,118 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:27:38,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 298 transitions, 614 flow [2024-10-24 15:27:38,165 INFO L124 PetriNetUnfolderBase]: 38/469 cut-off events. [2024-10-24 15:27:38,165 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:27:38,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 469 events. 38/469 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2180 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 345. Up to 8 conditions per place. [2024-10-24 15:27:38,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 298 transitions, 614 flow [2024-10-24 15:27:38,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 298 transitions, 614 flow [2024-10-24 15:27:38,173 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:27:38,174 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;@2823d6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:27:38,174 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-24 15:27:38,176 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:27:38,176 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-10-24 15:27:38,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:27:38,176 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:38,176 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] [2024-10-24 15:27:38,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-24 15:27:38,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:38,177 INFO L85 PathProgramCache]: Analyzing trace with hash 378686603, now seen corresponding path program 1 times [2024-10-24 15:27:38,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:38,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485552186] [2024-10-24 15:27:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:38,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:38,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:38,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:38,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485552186] [2024-10-24 15:27:38,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485552186] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:38,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:27:38,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:27:38,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375166960] [2024-10-24 15:27:38,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:38,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:38,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:38,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:38,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:27:38,224 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 298 [2024-10-24 15:27:38,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 298 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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) [2024-10-24 15:27:38,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:38,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 298 [2024-10-24 15:27:38,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:43,822 INFO L124 PetriNetUnfolderBase]: 8406/45177 cut-off events. [2024-10-24 15:27:43,823 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-10-24 15:27:44,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57400 conditions, 45177 events. 8406/45177 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 636508 event pairs, 7889 based on Foata normal form. 6810/47710 useless extension candidates. Maximal degree in co-relation 42816. Up to 11992 conditions per place. [2024-10-24 15:27:44,325 INFO L140 encePairwiseOnDemand]: 272/298 looper letters, 36 selfloop transitions, 2 changer transitions 0/280 dead transitions. [2024-10-24 15:27:44,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 280 transitions, 654 flow [2024-10-24 15:27:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:44,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 798 transitions. [2024-10-24 15:27:44,328 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8926174496644296 [2024-10-24 15:27:44,328 INFO L175 Difference]: Start difference. First operand has 282 places, 298 transitions, 614 flow. Second operand 3 states and 798 transitions. [2024-10-24 15:27:44,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 280 transitions, 654 flow [2024-10-24 15:27:44,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 280 transitions, 652 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-24 15:27:44,333 INFO L231 Difference]: Finished difference. Result has 283 places, 274 transitions, 574 flow [2024-10-24 15:27:44,333 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=283, PETRI_TRANSITIONS=274} [2024-10-24 15:27:44,334 INFO L277 CegarLoopForPetriNet]: 282 programPoint places, 1 predicate places. [2024-10-24 15:27:44,334 INFO L471 AbstractCegarLoop]: Abstraction has has 283 places, 274 transitions, 574 flow [2024-10-24 15:27:44,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 244.33333333333334) internal successors, (733), 3 states have internal predecessors, (733), 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) [2024-10-24 15:27:44,334 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:44,334 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] [2024-10-24 15:27:44,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 15:27:44,335 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-24 15:27:44,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1222789558, now seen corresponding path program 1 times [2024-10-24 15:27:44,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:44,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901445049] [2024-10-24 15:27:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:44,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:44,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901445049] [2024-10-24 15:27:44,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901445049] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:44,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980737022] [2024-10-24 15:27:44,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:44,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:44,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:44,385 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:44,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 15:27:44,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:44,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:44,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:44,464 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:44,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980737022] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:44,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:44,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-24 15:27:44,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499689687] [2024-10-24 15:27:44,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:44,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:44,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:44,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:44,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:44,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 298 [2024-10-24 15:27:44,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 274 transitions, 574 flow. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2024-10-24 15:27:44,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:44,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 298 [2024-10-24 15:27:44,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:27:57,592 INFO L124 PetriNetUnfolderBase]: 25690/105475 cut-off events. [2024-10-24 15:27:57,593 INFO L125 PetriNetUnfolderBase]: For 401/401 co-relation queries the response was YES. [2024-10-24 15:27:57,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141819 conditions, 105475 events. 25690/105475 cut-off events. For 401/401 co-relation queries the response was YES. Maximal size of possible extension queue 1872. Compared 1597932 event pairs, 18666 based on Foata normal form. 0/98229 useless extension candidates. Maximal degree in co-relation 141770. Up to 35850 conditions per place. [2024-10-24 15:27:58,333 INFO L140 encePairwiseOnDemand]: 287/298 looper letters, 47 selfloop transitions, 4 changer transitions 0/279 dead transitions. [2024-10-24 15:27:58,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 279 transitions, 696 flow [2024-10-24 15:27:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:27:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:27:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 742 transitions. [2024-10-24 15:27:58,335 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8299776286353467 [2024-10-24 15:27:58,335 INFO L175 Difference]: Start difference. First operand has 283 places, 274 transitions, 574 flow. Second operand 3 states and 742 transitions. [2024-10-24 15:27:58,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 279 transitions, 696 flow [2024-10-24 15:27:58,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 279 transitions, 694 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:27:58,339 INFO L231 Difference]: Finished difference. Result has 278 places, 271 transitions, 586 flow [2024-10-24 15:27:58,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=586, PETRI_PLACES=278, PETRI_TRANSITIONS=271} [2024-10-24 15:27:58,340 INFO L277 CegarLoopForPetriNet]: 282 programPoint places, -4 predicate places. [2024-10-24 15:27:58,340 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 271 transitions, 586 flow [2024-10-24 15:27:58,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 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) [2024-10-24 15:27:58,340 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:27:58,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:27:58,354 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 15:27:58,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:58,542 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-24 15:27:58,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:27:58,542 INFO L85 PathProgramCache]: Analyzing trace with hash -350160199, now seen corresponding path program 1 times [2024-10-24 15:27:58,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:27:58,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398249936] [2024-10-24 15:27:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:58,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:27:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:27:58,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:27:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398249936] [2024-10-24 15:27:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398249936] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 15:27:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266885063] [2024-10-24 15:27:58,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:27:58,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 15:27:58,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:27:58,596 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 15:27:58,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 15:27:58,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:27:58,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-24 15:27:58,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 15:27:58,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 15:27:58,669 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 15:27:58,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266885063] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:27:58,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 15:27:58,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-10-24 15:27:58,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822489027] [2024-10-24 15:27:58,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:27:58,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:27:58,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:27:58,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:27:58,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:27:58,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 298 [2024-10-24 15:27:58,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 271 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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) [2024-10-24 15:27:58,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:27:58,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 298 [2024-10-24 15:27:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:28:05,464 INFO L124 PetriNetUnfolderBase]: 12695/55834 cut-off events. [2024-10-24 15:28:05,464 INFO L125 PetriNetUnfolderBase]: For 184/184 co-relation queries the response was YES. [2024-10-24 15:28:05,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74756 conditions, 55834 events. 12695/55834 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 789927 event pairs, 10298 based on Foata normal form. 0/51146 useless extension candidates. Maximal degree in co-relation 74024. Up to 14427 conditions per place. [2024-10-24 15:28:05,921 INFO L140 encePairwiseOnDemand]: 295/298 looper letters, 48 selfloop transitions, 2 changer transitions 0/288 dead transitions. [2024-10-24 15:28:05,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 288 transitions, 720 flow [2024-10-24 15:28:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:28:05,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:28:05,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 774 transitions. [2024-10-24 15:28:05,923 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8657718120805369 [2024-10-24 15:28:05,924 INFO L175 Difference]: Start difference. First operand has 278 places, 271 transitions, 586 flow. Second operand 3 states and 774 transitions. [2024-10-24 15:28:05,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 288 transitions, 720 flow [2024-10-24 15:28:05,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 288 transitions, 720 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:28:05,927 INFO L231 Difference]: Finished difference. Result has 279 places, 270 transitions, 588 flow [2024-10-24 15:28:05,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=298, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=588, PETRI_PLACES=279, PETRI_TRANSITIONS=270} [2024-10-24 15:28:05,928 INFO L277 CegarLoopForPetriNet]: 282 programPoint places, -3 predicate places. [2024-10-24 15:28:05,928 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 270 transitions, 588 flow [2024-10-24 15:28:05,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 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) [2024-10-24 15:28:05,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:28:05,929 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] [2024-10-24 15:28:05,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 15:28:06,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-24 15:28:06,130 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2024-10-24 15:28:06,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:28:06,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1082500055, now seen corresponding path program 1 times [2024-10-24 15:28:06,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:28:06,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856793755] [2024-10-24 15:28:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:28:06,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:28:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:28:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:28:06,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:28:06,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856793755] [2024-10-24 15:28:06,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856793755] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:28:06,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:28:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:28:06,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657850768] [2024-10-24 15:28:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:28:06,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:28:06,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:28:06,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:28:06,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:28:06,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 298 [2024-10-24 15:28:06,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 270 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 183.5) internal successors, (1101), 6 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:28:06,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:28:06,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 298 [2024-10-24 15:28:06,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand