./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/pthread-ext/09_fmaxsym-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.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 e78822126ecf610a8f2b081cd67f0280b0032e707126b95c500c0e8fa18b6e03 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 09:29:29,721 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 09:29:29,795 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-13 09:29:29,801 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 09:29:29,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 09:29:29,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 09:29:29,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 09:29:29,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 09:29:29,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 09:29:29,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 09:29:29,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 09:29:29,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 09:29:29,829 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 09:29:29,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 09:29:29,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 09:29:29,829 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 09:29:29,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 09:29:29,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 09:29:29,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 09:29:29,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 09:29:29,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 09:29:29,832 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 09:29:29,832 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-13 09:29:29,833 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 09:29:29,833 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 09:29:29,833 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 09:29:29,833 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 09:29:29,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 09:29:29,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 09:29:29,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 09:29:29,834 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 09:29:29,834 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:29:29,835 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 09:29:29,835 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 09:29:29,835 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 09:29:29,835 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 09:29:29,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 09:29:29,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 09:29:29,836 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 09:29:29,836 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 09:29:29,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 09:29:29,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e78822126ecf610a8f2b081cd67f0280b0032e707126b95c500c0e8fa18b6e03 [2024-10-13 09:29:30,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 09:29:30,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 09:29:30,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 09:29:30,075 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 09:29:30,075 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 09:29:30,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2024-10-13 09:29:31,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 09:29:31,550 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 09:29:31,551 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-pthread.i [2024-10-13 09:29:31,560 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4312042bc/a9be342fd07e4343bab64b825b2935bb/FLAG74c50cf51 [2024-10-13 09:29:31,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4312042bc/a9be342fd07e4343bab64b825b2935bb [2024-10-13 09:29:31,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 09:29:31,575 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 09:29:31,579 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 09:29:31,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 09:29:31,583 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 09:29:31,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:31,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120f8b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31, skipping insertion in model container [2024-10-13 09:29:31,585 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:31,622 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 09:29:31,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:29:31,910 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 09:29:31,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 09:29:31,984 INFO L204 MainTranslator]: Completed translation [2024-10-13 09:29:31,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31 WrapperNode [2024-10-13 09:29:31,984 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 09:29:31,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 09:29:31,986 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 09:29:31,986 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 09:29:31,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,022 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 112 [2024-10-13 09:29:32,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 09:29:32,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 09:29:32,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 09:29:32,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 09:29:32,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,035 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,035 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,041 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,045 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,046 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,047 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 09:29:32,048 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 09:29:32,048 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 09:29:32,048 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 09:29:32,049 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (1/1) ... [2024-10-13 09:29:32,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 09:29:32,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:32,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 09:29:32,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 09:29:32,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-13 09:29:32,131 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-13 09:29:32,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-13 09:29:32,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-13 09:29:32,131 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-13 09:29:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 09:29:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-13 09:29:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-13 09:29:32,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 09:29:32,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 09:29:32,133 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 09:29:32,272 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 09:29:32,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 09:29:32,453 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 09:29:32,455 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 09:29:32,476 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 09:29:32,476 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-13 09:29:32,477 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:29:32 BoogieIcfgContainer [2024-10-13 09:29:32,477 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 09:29:32,478 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 09:29:32,478 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 09:29:32,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 09:29:32,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:29:31" (1/3) ... [2024-10-13 09:29:32,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e71b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:29:32, skipping insertion in model container [2024-10-13 09:29:32,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:29:31" (2/3) ... [2024-10-13 09:29:32,482 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d0e71b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:29:32, skipping insertion in model container [2024-10-13 09:29:32,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:29:32" (3/3) ... [2024-10-13 09:29:32,483 INFO L112 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-pthread.i [2024-10-13 09:29:32,500 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 09:29:32,500 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-10-13 09:29:32,500 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 09:29:32,566 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:32,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 124 transitions, 252 flow [2024-10-13 09:29:32,636 INFO L124 PetriNetUnfolderBase]: 10/133 cut-off events. [2024-10-13 09:29:32,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:32,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 133 events. 10/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2024-10-13 09:29:32,643 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 124 transitions, 252 flow [2024-10-13 09:29:32,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 124 transitions, 252 flow [2024-10-13 09:29:32,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:32,664 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;@1279bd3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:32,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-10-13 09:29:32,679 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:32,680 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:29:32,680 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:32,680 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:32,680 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] [2024-10-13 09:29:32,681 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:29:32,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:32,685 INFO L85 PathProgramCache]: Analyzing trace with hash -240468847, now seen corresponding path program 1 times [2024-10-13 09:29:32,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:32,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781850004] [2024-10-13 09:29:32,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:32,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:33,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:33,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781850004] [2024-10-13 09:29:33,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781850004] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:33,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:33,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:33,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404364630] [2024-10-13 09:29:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:33,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:33,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:33,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 124 [2024-10-13 09:29:33,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 124 transitions, 252 flow. Second operand has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:33,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:33,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 124 [2024-10-13 09:29:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:33,605 INFO L124 PetriNetUnfolderBase]: 3/115 cut-off events. [2024-10-13 09:29:33,606 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-13 09:29:33,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 115 events. 3/115 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 77 event pairs, 0 based on Foata normal form. 15/121 useless extension candidates. Maximal degree in co-relation 76. Up to 16 conditions per place. [2024-10-13 09:29:33,608 INFO L140 encePairwiseOnDemand]: 111/124 looper letters, 15 selfloop transitions, 5 changer transitions 0/111 dead transitions. [2024-10-13 09:29:33,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 266 flow [2024-10-13 09:29:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:33,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 592 transitions. [2024-10-13 09:29:33,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7956989247311828 [2024-10-13 09:29:33,632 INFO L175 Difference]: Start difference. First operand has 118 places, 124 transitions, 252 flow. Second operand 6 states and 592 transitions. [2024-10-13 09:29:33,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 266 flow [2024-10-13 09:29:33,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 266 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:33,641 INFO L231 Difference]: Finished difference. Result has 116 places, 111 transitions, 236 flow [2024-10-13 09:29:33,643 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=116, PETRI_TRANSITIONS=111} [2024-10-13 09:29:33,647 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -2 predicate places. [2024-10-13 09:29:33,647 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 111 transitions, 236 flow [2024-10-13 09:29:33,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.5) internal successors, (573), 6 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:33,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:33,648 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] [2024-10-13 09:29:33,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 09:29:33,649 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:29:33,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:33,650 INFO L85 PathProgramCache]: Analyzing trace with hash -587319925, now seen corresponding path program 1 times [2024-10-13 09:29:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:33,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437541405] [2024-10-13 09:29:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:33,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:33,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:33,703 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:33,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:33,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437541405] [2024-10-13 09:29:33,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437541405] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:33,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:33,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:29:33,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445728226] [2024-10-13 09:29:33,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:33,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:29:33,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:33,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:29:33,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:29:33,729 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 124 [2024-10-13 09:29:33,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 111 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:33,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:33,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 124 [2024-10-13 09:29:33,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:33,775 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2024-10-13 09:29:33,776 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-13 09:29:33,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 127 events. 3/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 92. Up to 11 conditions per place. [2024-10-13 09:29:33,778 INFO L140 encePairwiseOnDemand]: 121/124 looper letters, 9 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2024-10-13 09:29:33,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 112 transitions, 262 flow [2024-10-13 09:29:33,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:29:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:29:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2024-10-13 09:29:33,781 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2024-10-13 09:29:33,781 INFO L175 Difference]: Start difference. First operand has 116 places, 111 transitions, 236 flow. Second operand 3 states and 327 transitions. [2024-10-13 09:29:33,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 112 transitions, 262 flow [2024-10-13 09:29:33,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 112 transitions, 250 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:29:33,786 INFO L231 Difference]: Finished difference. Result has 114 places, 112 transitions, 238 flow [2024-10-13 09:29:33,786 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2024-10-13 09:29:33,787 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, -4 predicate places. [2024-10-13 09:29:33,787 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 238 flow [2024-10-13 09:29:33,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:33,787 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:33,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:33,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 09:29:33,789 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:29:33,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:33,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1497332229, now seen corresponding path program 1 times [2024-10-13 09:29:33,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:33,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632961661] [2024-10-13 09:29:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:33,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:33,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:33,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632961661] [2024-10-13 09:29:33,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632961661] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:33,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672604060] [2024-10-13 09:29:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:33,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:33,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:29:33,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 09:29:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:33,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:29:33,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:34,058 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:34,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672604060] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:34,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:34,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:29:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820014602] [2024-10-13 09:29:34,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:34,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:29:34,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:29:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:29:34,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-10-13 09:29:34,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 238 flow. Second operand has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:34,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:34,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-10-13 09:29:34,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:34,283 INFO L124 PetriNetUnfolderBase]: 3/142 cut-off events. [2024-10-13 09:29:34,284 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 09:29:34,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 142 events. 3/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 2/136 useless extension candidates. Maximal degree in co-relation 127. Up to 11 conditions per place. [2024-10-13 09:29:34,285 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 13 selfloop transitions, 9 changer transitions 0/120 dead transitions. [2024-10-13 09:29:34,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 120 transitions, 300 flow [2024-10-13 09:29:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:29:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:29:34,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 942 transitions. [2024-10-13 09:29:34,290 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8440860215053764 [2024-10-13 09:29:34,290 INFO L175 Difference]: Start difference. First operand has 114 places, 112 transitions, 238 flow. Second operand 9 states and 942 transitions. [2024-10-13 09:29:34,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 120 transitions, 300 flow [2024-10-13 09:29:34,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 120 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:34,292 INFO L231 Difference]: Finished difference. Result has 124 places, 118 transitions, 286 flow [2024-10-13 09:29:34,292 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=286, PETRI_PLACES=124, PETRI_TRANSITIONS=118} [2024-10-13 09:29:34,293 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 6 predicate places. [2024-10-13 09:29:34,293 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 118 transitions, 286 flow [2024-10-13 09:29:34,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.9) internal successors, (1039), 10 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:34,294 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:34,294 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 09:29:34,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 09:29:34,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:34,495 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:29:34,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:34,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1309340731, now seen corresponding path program 2 times [2024-10-13 09:29:34,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:34,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213114830] [2024-10-13 09:29:34,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:34,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:34,675 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:34,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213114830] [2024-10-13 09:29:34,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213114830] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:34,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870559639] [2024-10-13 09:29:34,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:29:34,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:34,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:34,683 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:29:34,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 09:29:34,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 09:29:34,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:29:34,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:29:34,778 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:34,862 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:34,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-13 09:29:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870559639] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:34,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:34,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:29:34,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639261809] [2024-10-13 09:29:34,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:34,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:29:34,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:34,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:29:34,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:29:35,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 124 [2024-10-13 09:29:35,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 118 transitions, 286 flow. Second operand has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:35,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:35,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 124 [2024-10-13 09:29:35,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:35,200 INFO L124 PetriNetUnfolderBase]: 3/181 cut-off events. [2024-10-13 09:29:35,200 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-10-13 09:29:35,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 181 events. 3/181 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 3/176 useless extension candidates. Maximal degree in co-relation 186. Up to 11 conditions per place. [2024-10-13 09:29:35,201 INFO L140 encePairwiseOnDemand]: 118/124 looper letters, 16 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-10-13 09:29:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 132 transitions, 428 flow [2024-10-13 09:29:35,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:29:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:29:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1873 transitions. [2024-10-13 09:29:35,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.83915770609319 [2024-10-13 09:29:35,205 INFO L175 Difference]: Start difference. First operand has 124 places, 118 transitions, 286 flow. Second operand 18 states and 1873 transitions. [2024-10-13 09:29:35,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 132 transitions, 428 flow [2024-10-13 09:29:35,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 132 transitions, 416 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:35,209 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 386 flow [2024-10-13 09:29:35,209 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=386, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-10-13 09:29:35,210 INFO L277 CegarLoopForPetriNet]: 118 programPoint places, 26 predicate places. [2024-10-13 09:29:35,210 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 386 flow [2024-10-13 09:29:35,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 104.06666666666666) internal successors, (1561), 15 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:35,211 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:35,212 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2024-10-13 09:29:35,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 09:29:35,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-10-13 09:29:35,414 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-10-13 09:29:35,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:35,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1738405813, now seen corresponding path program 3 times [2024-10-13 09:29:35,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887649830] [2024-10-13 09:29:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:35,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:29:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:35,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:29:35,518 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:29:35,519 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-10-13 09:29:35,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-10-13 09:29:35,520 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-10-13 09:29:35,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-10-13 09:29:35,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-10-13 09:29:35,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-10-13 09:29:35,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-10-13 09:29:35,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-10-13 09:29:35,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-10-13 09:29:35,521 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-10-13 09:29:35,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 09:29:35,521 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-13 09:29:35,524 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:29:35,525 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-13 09:29:35,557 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:35,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 193 transitions, 396 flow [2024-10-13 09:29:35,575 INFO L124 PetriNetUnfolderBase]: 17/213 cut-off events. [2024-10-13 09:29:35,576 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-13 09:29:35,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 213 events. 17/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 390 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 147. Up to 6 conditions per place. [2024-10-13 09:29:35,579 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 193 transitions, 396 flow [2024-10-13 09:29:35,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 183 places, 193 transitions, 396 flow [2024-10-13 09:29:35,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:35,586 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;@1279bd3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:35,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-10-13 09:29:35,592 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:35,592 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:29:35,592 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:35,592 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:35,593 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] [2024-10-13 09:29:35,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 09:29:35,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1282713394, now seen corresponding path program 1 times [2024-10-13 09:29:35,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:35,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864214889] [2024-10-13 09:29:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:35,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:35,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:35,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:35,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864214889] [2024-10-13 09:29:35,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864214889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:35,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:35,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:35,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270602344] [2024-10-13 09:29:35,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:35,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:35,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:35,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:35,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:35,901 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 193 [2024-10-13 09:29:35,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 193 transitions, 396 flow. Second operand has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:35,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:35,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 193 [2024-10-13 09:29:35,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:36,010 INFO L124 PetriNetUnfolderBase]: 104/729 cut-off events. [2024-10-13 09:29:36,011 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 09:29:36,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 729 events. 104/729 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3762 event pairs, 72 based on Foata normal form. 162/784 useless extension candidates. Maximal degree in co-relation 670. Up to 185 conditions per place. [2024-10-13 09:29:36,017 INFO L140 encePairwiseOnDemand]: 176/193 looper letters, 24 selfloop transitions, 5 changer transitions 0/174 dead transitions. [2024-10-13 09:29:36,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 174 transitions, 416 flow [2024-10-13 09:29:36,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 935 transitions. [2024-10-13 09:29:36,019 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8074265975820379 [2024-10-13 09:29:36,019 INFO L175 Difference]: Start difference. First operand has 183 places, 193 transitions, 396 flow. Second operand 6 states and 935 transitions. [2024-10-13 09:29:36,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 174 transitions, 416 flow [2024-10-13 09:29:36,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 174 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:36,022 INFO L231 Difference]: Finished difference. Result has 179 places, 174 transitions, 368 flow [2024-10-13 09:29:36,022 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=368, PETRI_PLACES=179, PETRI_TRANSITIONS=174} [2024-10-13 09:29:36,024 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -4 predicate places. [2024-10-13 09:29:36,024 INFO L471 AbstractCegarLoop]: Abstraction has has 179 places, 174 transitions, 368 flow [2024-10-13 09:29:36,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:36,025 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:36,025 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2024-10-13 09:29:36,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 09:29:36,025 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 09:29:36,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1555781261, now seen corresponding path program 1 times [2024-10-13 09:29:36,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:36,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155050716] [2024-10-13 09:29:36,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:36,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:36,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:36,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:36,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155050716] [2024-10-13 09:29:36,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155050716] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:36,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:36,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:29:36,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128759727] [2024-10-13 09:29:36,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:36,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:29:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:36,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:29:36,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:29:36,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 193 [2024-10-13 09:29:36,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 174 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:36,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:36,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 193 [2024-10-13 09:29:36,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:36,121 INFO L124 PetriNetUnfolderBase]: 33/496 cut-off events. [2024-10-13 09:29:36,121 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-10-13 09:29:36,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 496 events. 33/496 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2022 event pairs, 20 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 521. Up to 56 conditions per place. [2024-10-13 09:29:36,126 INFO L140 encePairwiseOnDemand]: 190/193 looper letters, 14 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2024-10-13 09:29:36,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 175 transitions, 404 flow [2024-10-13 09:29:36,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:29:36,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:29:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2024-10-13 09:29:36,150 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791018998272885 [2024-10-13 09:29:36,150 INFO L175 Difference]: Start difference. First operand has 179 places, 174 transitions, 368 flow. Second operand 3 states and 509 transitions. [2024-10-13 09:29:36,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 175 transitions, 404 flow [2024-10-13 09:29:36,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 392 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:29:36,153 INFO L231 Difference]: Finished difference. Result has 177 places, 175 transitions, 370 flow [2024-10-13 09:29:36,153 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=177, PETRI_TRANSITIONS=175} [2024-10-13 09:29:36,154 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, -6 predicate places. [2024-10-13 09:29:36,154 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 175 transitions, 370 flow [2024-10-13 09:29:36,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:36,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:36,155 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:36,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 09:29:36,155 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 09:29:36,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 846948760, now seen corresponding path program 1 times [2024-10-13 09:29:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:36,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980153335] [2024-10-13 09:29:36,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:36,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:36,216 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:36,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980153335] [2024-10-13 09:29:36,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980153335] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:36,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025157839] [2024-10-13 09:29:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:36,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:36,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:29:36,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 09:29:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:36,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:29:36,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:36,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:36,320 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:36,359 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:36,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025157839] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:36,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:36,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:29:36,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371355336] [2024-10-13 09:29:36,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:36,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:29:36,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:36,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:29:36,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:29:36,433 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-10-13 09:29:36,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 175 transitions, 370 flow. Second operand has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:36,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:36,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-10-13 09:29:36,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:36,543 INFO L124 PetriNetUnfolderBase]: 33/511 cut-off events. [2024-10-13 09:29:36,544 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-10-13 09:29:36,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 607 conditions, 511 events. 33/511 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 556. Up to 56 conditions per place. [2024-10-13 09:29:36,547 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 18 selfloop transitions, 9 changer transitions 0/183 dead transitions. [2024-10-13 09:29:36,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 442 flow [2024-10-13 09:29:36,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:29:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:29:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1478 transitions. [2024-10-13 09:29:36,550 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8508923431203224 [2024-10-13 09:29:36,550 INFO L175 Difference]: Start difference. First operand has 177 places, 175 transitions, 370 flow. Second operand 9 states and 1478 transitions. [2024-10-13 09:29:36,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 442 flow [2024-10-13 09:29:36,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 183 transitions, 440 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:36,553 INFO L231 Difference]: Finished difference. Result has 187 places, 181 transitions, 418 flow [2024-10-13 09:29:36,553 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=187, PETRI_TRANSITIONS=181} [2024-10-13 09:29:36,554 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 4 predicate places. [2024-10-13 09:29:36,554 INFO L471 AbstractCegarLoop]: Abstraction has has 187 places, 181 transitions, 418 flow [2024-10-13 09:29:36,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.0) internal successors, (1630), 10 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:36,556 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:36,556 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-10-13 09:29:36,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 09:29:36,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:36,757 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 09:29:36,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:36,758 INFO L85 PathProgramCache]: Analyzing trace with hash -196544136, now seen corresponding path program 2 times [2024-10-13 09:29:36,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:36,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283396369] [2024-10-13 09:29:36,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:36,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:36,872 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:36,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283396369] [2024-10-13 09:29:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283396369] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884230332] [2024-10-13 09:29:36,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:29:36,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:36,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:36,875 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) [2024-10-13 09:29:36,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 09:29:36,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 09:29:36,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:29:36,952 INFO L255 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:29:36,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:37,004 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-10-13 09:29:37,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884230332] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:37,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:37,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:29:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558588344] [2024-10-13 09:29:37,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:37,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:29:37,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:29:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:29:37,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 193 [2024-10-13 09:29:37,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 181 transitions, 418 flow. Second operand has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:37,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:37,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 193 [2024-10-13 09:29:37,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:37,385 INFO L124 PetriNetUnfolderBase]: 33/550 cut-off events. [2024-10-13 09:29:37,385 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-10-13 09:29:37,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 550 events. 33/550 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1997 event pairs, 20 based on Foata normal form. 3/504 useless extension candidates. Maximal degree in co-relation 518. Up to 56 conditions per place. [2024-10-13 09:29:37,389 INFO L140 encePairwiseOnDemand]: 187/193 looper letters, 21 selfloop transitions, 18 changer transitions 0/195 dead transitions. [2024-10-13 09:29:37,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 195 transitions, 570 flow [2024-10-13 09:29:37,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:29:37,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:29:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2940 transitions. [2024-10-13 09:29:37,393 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.846286701208981 [2024-10-13 09:29:37,393 INFO L175 Difference]: Start difference. First operand has 187 places, 181 transitions, 418 flow. Second operand 18 states and 2940 transitions. [2024-10-13 09:29:37,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 195 transitions, 570 flow [2024-10-13 09:29:37,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 195 transitions, 558 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:37,396 INFO L231 Difference]: Finished difference. Result has 207 places, 191 transitions, 518 flow [2024-10-13 09:29:37,396 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=193, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=518, PETRI_PLACES=207, PETRI_TRANSITIONS=191} [2024-10-13 09:29:37,397 INFO L277 CegarLoopForPetriNet]: 183 programPoint places, 24 predicate places. [2024-10-13 09:29:37,397 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 191 transitions, 518 flow [2024-10-13 09:29:37,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 163.13333333333333) internal successors, (2447), 15 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:37,399 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:37,400 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 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] [2024-10-13 09:29:37,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 09:29:37,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:37,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-10-13 09:29:37,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:37,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1436573139, now seen corresponding path program 3 times [2024-10-13 09:29:37,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:37,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967733126] [2024-10-13 09:29:37,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:37,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:37,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:29:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:37,665 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:29:37,665 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:29:37,665 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-10-13 09:29:37,666 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-10-13 09:29:37,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-10-13 09:29:37,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-10-13 09:29:37,667 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-10-13 09:29:37,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-13 09:29:37,667 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-13 09:29:37,668 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:29:37,668 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-13 09:29:37,694 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:37,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 262 transitions, 542 flow [2024-10-13 09:29:37,717 INFO L124 PetriNetUnfolderBase]: 24/293 cut-off events. [2024-10-13 09:29:37,717 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-13 09:29:37,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 293 events. 24/293 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 753 event pairs, 0 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 217. Up to 8 conditions per place. [2024-10-13 09:29:37,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 262 transitions, 542 flow [2024-10-13 09:29:37,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 262 transitions, 542 flow [2024-10-13 09:29:37,721 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:37,722 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;@1279bd3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:37,722 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-10-13 09:29:37,724 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:37,724 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:29:37,724 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:37,724 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:37,724 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] [2024-10-13 09:29:37,725 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-13 09:29:37,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash -9858184, now seen corresponding path program 1 times [2024-10-13 09:29:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625711647] [2024-10-13 09:29:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:37,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:37,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:37,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625711647] [2024-10-13 09:29:37,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625711647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:37,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:37,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:37,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122947892] [2024-10-13 09:29:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:37,920 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:37,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:37,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:37,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:38,080 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 262 [2024-10-13 09:29:38,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 262 transitions, 542 flow. Second operand has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:38,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:38,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 262 [2024-10-13 09:29:38,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:38,881 INFO L124 PetriNetUnfolderBase]: 1746/6799 cut-off events. [2024-10-13 09:29:38,881 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-10-13 09:29:38,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9610 conditions, 6799 events. 1746/6799 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 66614 event pairs, 1368 based on Foata normal form. 1870/7599 useless extension candidates. Maximal degree in co-relation 6430. Up to 2449 conditions per place. [2024-10-13 09:29:38,933 INFO L140 encePairwiseOnDemand]: 241/262 looper letters, 33 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-10-13 09:29:38,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 237 transitions, 568 flow [2024-10-13 09:29:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:38,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:38,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1278 transitions. [2024-10-13 09:29:38,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8129770992366412 [2024-10-13 09:29:38,936 INFO L175 Difference]: Start difference. First operand has 248 places, 262 transitions, 542 flow. Second operand 6 states and 1278 transitions. [2024-10-13 09:29:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 237 transitions, 568 flow [2024-10-13 09:29:38,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 237 transitions, 566 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:38,941 INFO L231 Difference]: Finished difference. Result has 242 places, 237 transitions, 500 flow [2024-10-13 09:29:38,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=500, PETRI_PLACES=242, PETRI_TRANSITIONS=237} [2024-10-13 09:29:38,942 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -6 predicate places. [2024-10-13 09:29:38,942 INFO L471 AbstractCegarLoop]: Abstraction has has 242 places, 237 transitions, 500 flow [2024-10-13 09:29:38,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.5) internal successors, (1233), 6 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:38,943 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:38,943 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:38,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-13 09:29:38,943 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-13 09:29:38,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:38,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1070750038, now seen corresponding path program 1 times [2024-10-13 09:29:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:38,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652046914] [2024-10-13 09:29:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:29:38,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:38,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652046914] [2024-10-13 09:29:38,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652046914] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:38,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:38,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:29:38,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524198144] [2024-10-13 09:29:38,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:38,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:29:38,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:29:38,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:29:38,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 262 [2024-10-13 09:29:38,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 237 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:38,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:38,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 262 [2024-10-13 09:29:38,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:39,390 INFO L124 PetriNetUnfolderBase]: 283/2441 cut-off events. [2024-10-13 09:29:39,390 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-10-13 09:29:39,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 2441 events. 283/2441 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 20042 event pairs, 220 based on Foata normal form. 1/2187 useless extension candidates. Maximal degree in co-relation 2866. Up to 381 conditions per place. [2024-10-13 09:29:39,412 INFO L140 encePairwiseOnDemand]: 259/262 looper letters, 19 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2024-10-13 09:29:39,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 238 transitions, 546 flow [2024-10-13 09:29:39,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:29:39,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:29:39,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 691 transitions. [2024-10-13 09:29:39,415 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8791348600508906 [2024-10-13 09:29:39,415 INFO L175 Difference]: Start difference. First operand has 242 places, 237 transitions, 500 flow. Second operand 3 states and 691 transitions. [2024-10-13 09:29:39,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 238 transitions, 546 flow [2024-10-13 09:29:39,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 238 transitions, 534 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:29:39,419 INFO L231 Difference]: Finished difference. Result has 240 places, 238 transitions, 502 flow [2024-10-13 09:29:39,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=502, PETRI_PLACES=240, PETRI_TRANSITIONS=238} [2024-10-13 09:29:39,420 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2024-10-13 09:29:39,420 INFO L471 AbstractCegarLoop]: Abstraction has has 240 places, 238 transitions, 502 flow [2024-10-13 09:29:39,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:39,421 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:39,421 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:39,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-13 09:29:39,421 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-13 09:29:39,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:39,422 INFO L85 PathProgramCache]: Analyzing trace with hash 2021498603, now seen corresponding path program 1 times [2024-10-13 09:29:39,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:39,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161552991] [2024-10-13 09:29:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:39,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:29:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161552991] [2024-10-13 09:29:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161552991] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818633443] [2024-10-13 09:29:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:39,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:39,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:39,465 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) [2024-10-13 09:29:39,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 09:29:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:39,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:29:39,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:29:39,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:39,599 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:29:39,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818633443] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:39,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:39,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:29:39,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529147369] [2024-10-13 09:29:39,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:39,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:29:39,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:29:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:29:39,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-10-13 09:29:39,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 238 transitions, 502 flow. Second operand has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:39,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:39,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-10-13 09:29:39,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:39,947 INFO L124 PetriNetUnfolderBase]: 283/2456 cut-off events. [2024-10-13 09:29:39,948 INFO L125 PetriNetUnfolderBase]: For 167/167 co-relation queries the response was YES. [2024-10-13 09:29:39,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2953 conditions, 2456 events. 283/2456 cut-off events. For 167/167 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19940 event pairs, 220 based on Foata normal form. 2/2203 useless extension candidates. Maximal degree in co-relation 2901. Up to 381 conditions per place. [2024-10-13 09:29:39,969 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 23 selfloop transitions, 9 changer transitions 0/246 dead transitions. [2024-10-13 09:29:39,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 246 transitions, 584 flow [2024-10-13 09:29:39,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:29:39,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:29:39,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2014 transitions. [2024-10-13 09:29:39,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8541136556403732 [2024-10-13 09:29:39,973 INFO L175 Difference]: Start difference. First operand has 240 places, 238 transitions, 502 flow. Second operand 9 states and 2014 transitions. [2024-10-13 09:29:39,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 246 transitions, 584 flow [2024-10-13 09:29:39,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 582 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:39,977 INFO L231 Difference]: Finished difference. Result has 250 places, 244 transitions, 550 flow [2024-10-13 09:29:39,977 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=550, PETRI_PLACES=250, PETRI_TRANSITIONS=244} [2024-10-13 09:29:39,977 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 2 predicate places. [2024-10-13 09:29:39,978 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 244 transitions, 550 flow [2024-10-13 09:29:39,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 222.1) internal successors, (2221), 10 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:39,978 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:39,979 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:39,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 09:29:40,182 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,SelfDestructingSolverStorable12 [2024-10-13 09:29:40,183 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-13 09:29:40,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash 646975819, now seen corresponding path program 2 times [2024-10-13 09:29:40,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:40,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24916941] [2024-10-13 09:29:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:40,277 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:29:40,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:40,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24916941] [2024-10-13 09:29:40,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24916941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:40,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394532168] [2024-10-13 09:29:40,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:29:40,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:40,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:40,280 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:29:40,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 09:29:40,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 09:29:40,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:29:40,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:29:40,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:29:40,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:40,511 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-10-13 09:29:40,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394532168] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:40,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:40,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:29:40,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373036971] [2024-10-13 09:29:40,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:40,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:29:40,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:40,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:29:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:29:40,605 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 262 [2024-10-13 09:29:40,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 244 transitions, 550 flow. Second operand has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:40,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:40,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 262 [2024-10-13 09:29:40,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:41,003 INFO L124 PetriNetUnfolderBase]: 283/2495 cut-off events. [2024-10-13 09:29:41,003 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2024-10-13 09:29:41,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2495 events. 283/2495 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19938 event pairs, 220 based on Foata normal form. 3/2243 useless extension candidates. Maximal degree in co-relation 2863. Up to 381 conditions per place. [2024-10-13 09:29:41,025 INFO L140 encePairwiseOnDemand]: 256/262 looper letters, 26 selfloop transitions, 18 changer transitions 0/258 dead transitions. [2024-10-13 09:29:41,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 258 transitions, 712 flow [2024-10-13 09:29:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:29:41,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:29:41,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4007 transitions. [2024-10-13 09:29:41,032 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8496607294317218 [2024-10-13 09:29:41,032 INFO L175 Difference]: Start difference. First operand has 250 places, 244 transitions, 550 flow. Second operand 18 states and 4007 transitions. [2024-10-13 09:29:41,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 258 transitions, 712 flow [2024-10-13 09:29:41,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 258 transitions, 700 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:41,037 INFO L231 Difference]: Finished difference. Result has 270 places, 254 transitions, 650 flow [2024-10-13 09:29:41,037 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=650, PETRI_PLACES=270, PETRI_TRANSITIONS=254} [2024-10-13 09:29:41,038 INFO L277 CegarLoopForPetriNet]: 248 programPoint places, 22 predicate places. [2024-10-13 09:29:41,039 INFO L471 AbstractCegarLoop]: Abstraction has has 270 places, 254 transitions, 650 flow [2024-10-13 09:29:41,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 222.2) internal successors, (3333), 15 states have internal predecessors, (3333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:41,040 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:41,040 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:41,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-13 09:29:41,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:41,242 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-10-13 09:29:41,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1702814602, now seen corresponding path program 3 times [2024-10-13 09:29:41,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:41,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845476081] [2024-10-13 09:29:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:41,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:41,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:29:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:29:41,300 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:29:41,300 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:29:41,300 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-10-13 09:29:41,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-10-13 09:29:41,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-10-13 09:29:41,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-10-13 09:29:41,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-10-13 09:29:41,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-10-13 09:29:41,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-10-13 09:29:41,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-10-13 09:29:41,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-10-13 09:29:41,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-13 09:29:41,302 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-10-13 09:29:41,303 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:29:41,303 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-13 09:29:41,331 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:29:41,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 331 transitions, 690 flow [2024-10-13 09:29:41,368 INFO L124 PetriNetUnfolderBase]: 31/373 cut-off events. [2024-10-13 09:29:41,368 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-13 09:29:41,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 373 events. 31/373 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1155 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 301. Up to 10 conditions per place. [2024-10-13 09:29:41,372 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 331 transitions, 690 flow [2024-10-13 09:29:41,374 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 331 transitions, 690 flow [2024-10-13 09:29:41,375 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:29:41,375 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;@1279bd3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:29:41,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-13 09:29:41,378 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:29:41,378 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:29:41,378 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:29:41,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:41,378 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] [2024-10-13 09:29:41,378 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:29:41,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:41,378 INFO L85 PathProgramCache]: Analyzing trace with hash 176783715, now seen corresponding path program 1 times [2024-10-13 09:29:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:41,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599212736] [2024-10-13 09:29:41,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:41,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599212736] [2024-10-13 09:29:41,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599212736] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:41,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:41,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:29:41,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511760526] [2024-10-13 09:29:41,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:41,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:41,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:29:41,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 331 [2024-10-13 09:29:41,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 331 transitions, 690 flow. Second operand has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:41,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:41,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 331 [2024-10-13 09:29:41,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:50,470 INFO L124 PetriNetUnfolderBase]: 23093/67620 cut-off events. [2024-10-13 09:29:50,470 INFO L125 PetriNetUnfolderBase]: For 7852/7852 co-relation queries the response was YES. [2024-10-13 09:29:50,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101042 conditions, 67620 events. 23093/67620 cut-off events. For 7852/7852 co-relation queries the response was YES. Maximal size of possible extension queue 1858. Compared 896187 event pairs, 18864 based on Foata normal form. 20917/78635 useless extension candidates. Maximal degree in co-relation 60574. Up to 29414 conditions per place. [2024-10-13 09:29:51,217 INFO L140 encePairwiseOnDemand]: 306/331 looper letters, 42 selfloop transitions, 5 changer transitions 0/300 dead transitions. [2024-10-13 09:29:51,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 300 transitions, 722 flow [2024-10-13 09:29:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:29:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:29:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1621 transitions. [2024-10-13 09:29:51,222 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8162134944612286 [2024-10-13 09:29:51,222 INFO L175 Difference]: Start difference. First operand has 313 places, 331 transitions, 690 flow. Second operand 6 states and 1621 transitions. [2024-10-13 09:29:51,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 300 transitions, 722 flow [2024-10-13 09:29:51,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 300 transitions, 716 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-13 09:29:51,228 INFO L231 Difference]: Finished difference. Result has 305 places, 300 transitions, 632 flow [2024-10-13 09:29:51,229 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=632, PETRI_PLACES=305, PETRI_TRANSITIONS=300} [2024-10-13 09:29:51,229 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -8 predicate places. [2024-10-13 09:29:51,230 INFO L471 AbstractCegarLoop]: Abstraction has has 305 places, 300 transitions, 632 flow [2024-10-13 09:29:51,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 260.5) internal successors, (1563), 6 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:51,231 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:51,231 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:51,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-13 09:29:51,231 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:29:51,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:51,232 INFO L85 PathProgramCache]: Analyzing trace with hash 388618173, now seen corresponding path program 1 times [2024-10-13 09:29:51,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:51,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919287538] [2024-10-13 09:29:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:51,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:51,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:51,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:51,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919287538] [2024-10-13 09:29:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919287538] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:51,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:29:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 09:29:51,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365686532] [2024-10-13 09:29:51,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:51,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 09:29:51,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:51,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 09:29:51,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 09:29:51,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 282 out of 331 [2024-10-13 09:29:51,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 300 transitions, 632 flow. Second operand has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:51,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:51,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 282 of 331 [2024-10-13 09:29:51,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:53,252 INFO L124 PetriNetUnfolderBase]: 2033/12666 cut-off events. [2024-10-13 09:29:53,252 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-10-13 09:29:53,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15656 conditions, 12666 events. 2033/12666 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149755 event pairs, 1720 based on Foata normal form. 1/11381 useless extension candidates. Maximal degree in co-relation 15591. Up to 2506 conditions per place. [2024-10-13 09:29:53,413 INFO L140 encePairwiseOnDemand]: 328/331 looper letters, 24 selfloop transitions, 2 changer transitions 0/301 dead transitions. [2024-10-13 09:29:53,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 301 transitions, 688 flow [2024-10-13 09:29:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 09:29:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 09:29:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 873 transitions. [2024-10-13 09:29:53,414 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.879154078549849 [2024-10-13 09:29:53,415 INFO L175 Difference]: Start difference. First operand has 305 places, 300 transitions, 632 flow. Second operand 3 states and 873 transitions. [2024-10-13 09:29:53,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 301 transitions, 688 flow [2024-10-13 09:29:53,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 301 transitions, 676 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:29:53,422 INFO L231 Difference]: Finished difference. Result has 303 places, 301 transitions, 634 flow [2024-10-13 09:29:53,423 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=634, PETRI_PLACES=303, PETRI_TRANSITIONS=301} [2024-10-13 09:29:53,423 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, -10 predicate places. [2024-10-13 09:29:53,423 INFO L471 AbstractCegarLoop]: Abstraction has has 303 places, 301 transitions, 634 flow [2024-10-13 09:29:53,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:53,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:53,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:53,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-13 09:29:53,424 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:29:53,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:53,425 INFO L85 PathProgramCache]: Analyzing trace with hash 748736817, now seen corresponding path program 1 times [2024-10-13 09:29:53,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:53,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940634580] [2024-10-13 09:29:53,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:53,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940634580] [2024-10-13 09:29:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940634580] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264459914] [2024-10-13 09:29:53,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:53,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:53,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:29:53,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 09:29:53,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:53,634 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 09:29:53,785 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:53,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:53,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:29:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:53,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264459914] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:29:53,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:29:53,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-13 09:29:53,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346226000] [2024-10-13 09:29:53,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:29:53,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-13 09:29:53,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:53,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-13 09:29:53,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 09:29:53,925 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-10-13 09:29:53,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 301 transitions, 634 flow. Second operand has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:53,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:53,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-10-13 09:29:53,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:29:55,741 INFO L124 PetriNetUnfolderBase]: 2033/12681 cut-off events. [2024-10-13 09:29:55,742 INFO L125 PetriNetUnfolderBase]: For 1217/1217 co-relation queries the response was YES. [2024-10-13 09:29:55,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15679 conditions, 12681 events. 2033/12681 cut-off events. For 1217/1217 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149708 event pairs, 1720 based on Foata normal form. 2/11397 useless extension candidates. Maximal degree in co-relation 15626. Up to 2506 conditions per place. [2024-10-13 09:29:55,839 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 28 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2024-10-13 09:29:55,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 309 transitions, 726 flow [2024-10-13 09:29:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-13 09:29:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-13 09:29:55,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2550 transitions. [2024-10-13 09:29:55,842 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8559919436052367 [2024-10-13 09:29:55,842 INFO L175 Difference]: Start difference. First operand has 303 places, 301 transitions, 634 flow. Second operand 9 states and 2550 transitions. [2024-10-13 09:29:55,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 309 transitions, 726 flow [2024-10-13 09:29:55,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 309 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-13 09:29:55,848 INFO L231 Difference]: Finished difference. Result has 313 places, 307 transitions, 682 flow [2024-10-13 09:29:55,848 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=682, PETRI_PLACES=313, PETRI_TRANSITIONS=307} [2024-10-13 09:29:55,849 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 0 predicate places. [2024-10-13 09:29:55,849 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 307 transitions, 682 flow [2024-10-13 09:29:55,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 280.9) internal successors, (2809), 10 states have internal predecessors, (2809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:55,850 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:29:55,850 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:29:55,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 09:29:56,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:56,051 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:29:56,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:29:56,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1736235855, now seen corresponding path program 2 times [2024-10-13 09:29:56,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:29:56,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978962012] [2024-10-13 09:29:56,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:29:56,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:29:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:29:56,161 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:29:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:29:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978962012] [2024-10-13 09:29:56,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978962012] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:29:56,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657280887] [2024-10-13 09:29:56,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 09:29:56,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:29:56,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:29:56,164 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:29:56,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 09:29:56,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-13 09:29:56,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 09:29:56,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-13 09:29:56,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:29:56,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-13 09:29:56,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-13 09:29:56,322 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:29:56,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-13 09:29:56,351 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-13 09:29:56,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-13 09:29:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-10-13 09:29:56,377 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 09:29:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657280887] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:29:56,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 09:29:56,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-13 09:29:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436656014] [2024-10-13 09:29:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:29:56,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:29:56,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:29:56,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:29:56,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-10-13 09:29:56,565 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 331 [2024-10-13 09:29:56,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 307 transitions, 682 flow. Second operand has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:29:56,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:29:56,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 331 [2024-10-13 09:29:56,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:00,271 INFO L124 PetriNetUnfolderBase]: 6000/23864 cut-off events. [2024-10-13 09:30:00,272 INFO L125 PetriNetUnfolderBase]: For 2301/2301 co-relation queries the response was YES. [2024-10-13 09:30:00,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33119 conditions, 23864 events. 6000/23864 cut-off events. For 2301/2301 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 297495 event pairs, 2095 based on Foata normal form. 0/21342 useless extension candidates. Maximal degree in co-relation 33009. Up to 3186 conditions per place. [2024-10-13 09:30:00,489 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 90 selfloop transitions, 5 changer transitions 0/366 dead transitions. [2024-10-13 09:30:00,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 366 transitions, 1050 flow [2024-10-13 09:30:00,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 09:30:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-13 09:30:00,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1728 transitions. [2024-10-13 09:30:00,491 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8700906344410876 [2024-10-13 09:30:00,491 INFO L175 Difference]: Start difference. First operand has 313 places, 307 transitions, 682 flow. Second operand 6 states and 1728 transitions. [2024-10-13 09:30:00,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 366 transitions, 1050 flow [2024-10-13 09:30:00,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 366 transitions, 1044 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-13 09:30:00,498 INFO L231 Difference]: Finished difference. Result has 316 places, 306 transitions, 684 flow [2024-10-13 09:30:00,498 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=684, PETRI_PLACES=316, PETRI_TRANSITIONS=306} [2024-10-13 09:30:00,499 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 3 predicate places. [2024-10-13 09:30:00,499 INFO L471 AbstractCegarLoop]: Abstraction has has 316 places, 306 transitions, 684 flow [2024-10-13 09:30:00,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.3333333333333) internal successors, (1646), 6 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:00,500 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:00,500 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:30:00,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 09:30:00,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:00,705 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:30:00,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:00,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1461545599, now seen corresponding path program 1 times [2024-10-13 09:30:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:00,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079572115] [2024-10-13 09:30:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:00,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-13 09:30:00,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:00,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079572115] [2024-10-13 09:30:00,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079572115] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 09:30:00,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437199372] [2024-10-13 09:30:00,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:00,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:00,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 09:30:00,800 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 09:30:00,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-13 09:30:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:00,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-13 09:30:00,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 09:30:00,958 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-13 09:30:00,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 09:30:01,034 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-10-13 09:30:01,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437199372] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 09:30:01,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 09:30:01,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-10-13 09:30:01,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525571703] [2024-10-13 09:30:01,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 09:30:01,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-13 09:30:01,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:01,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-13 09:30:01,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-10-13 09:30:01,094 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 331 [2024-10-13 09:30:01,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 306 transitions, 684 flow. Second operand has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:01,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:01,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 331 [2024-10-13 09:30:01,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 09:30:03,452 INFO L124 PetriNetUnfolderBase]: 2033/12719 cut-off events. [2024-10-13 09:30:03,452 INFO L125 PetriNetUnfolderBase]: For 1235/1235 co-relation queries the response was YES. [2024-10-13 09:30:03,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15771 conditions, 12719 events. 2033/12719 cut-off events. For 1235/1235 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 149693 event pairs, 1720 based on Foata normal form. 3/11437 useless extension candidates. Maximal degree in co-relation 15592. Up to 2506 conditions per place. [2024-10-13 09:30:03,798 INFO L140 encePairwiseOnDemand]: 325/331 looper letters, 31 selfloop transitions, 18 changer transitions 0/320 dead transitions. [2024-10-13 09:30:03,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 320 transitions, 850 flow [2024-10-13 09:30:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-10-13 09:30:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-10-13 09:30:03,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5074 transitions. [2024-10-13 09:30:03,803 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8516280631084256 [2024-10-13 09:30:03,803 INFO L175 Difference]: Start difference. First operand has 316 places, 306 transitions, 684 flow. Second operand 18 states and 5074 transitions. [2024-10-13 09:30:03,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 320 transitions, 850 flow [2024-10-13 09:30:03,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 320 transitions, 840 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-13 09:30:03,812 INFO L231 Difference]: Finished difference. Result has 332 places, 316 transitions, 780 flow [2024-10-13 09:30:03,813 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=331, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=780, PETRI_PLACES=332, PETRI_TRANSITIONS=316} [2024-10-13 09:30:03,813 INFO L277 CegarLoopForPetriNet]: 313 programPoint places, 19 predicate places. [2024-10-13 09:30:03,813 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 316 transitions, 780 flow [2024-10-13 09:30:03,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 281.26666666666665) internal successors, (4219), 15 states have internal predecessors, (4219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:03,815 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:03,815 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 09:30:03,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-10-13 09:30:04,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 09:30:04,018 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-10-13 09:30:04,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:04,018 INFO L85 PathProgramCache]: Analyzing trace with hash -792654581, now seen corresponding path program 2 times [2024-10-13 09:30:04,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:04,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905824567] [2024-10-13 09:30:04,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:04,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:30:04,047 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-13 09:30:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-13 09:30:04,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-13 09:30:04,077 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-13 09:30:04,077 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-10-13 09:30:04,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-10-13 09:30:04,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-10-13 09:30:04,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-10-13 09:30:04,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-10-13 09:30:04,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-10-13 09:30:04,078 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-10-13 09:30:04,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-13 09:30:04,079 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2024-10-13 09:30:04,079 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-13 09:30:04,079 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-13 09:30:04,115 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-13 09:30:04,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 400 transitions, 840 flow [2024-10-13 09:30:04,170 INFO L124 PetriNetUnfolderBase]: 38/453 cut-off events. [2024-10-13 09:30:04,170 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-13 09:30:04,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 453 events. 38/453 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1560 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 386. Up to 12 conditions per place. [2024-10-13 09:30:04,175 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 400 transitions, 840 flow [2024-10-13 09:30:04,179 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 378 places, 400 transitions, 840 flow [2024-10-13 09:30:04,180 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 09:30:04,180 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;@1279bd3a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 09:30:04,180 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-10-13 09:30:04,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 09:30:04,183 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-10-13 09:30:04,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-13 09:30:04,183 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 09:30:04,183 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] [2024-10-13 09:30:04,183 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-10-13 09:30:04,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 09:30:04,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1842639091, now seen corresponding path program 1 times [2024-10-13 09:30:04,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 09:30:04,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956716250] [2024-10-13 09:30:04,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 09:30:04,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 09:30:04,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 09:30:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 09:30:04,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 09:30:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956716250] [2024-10-13 09:30:04,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956716250] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 09:30:04,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 09:30:04,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 09:30:04,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131159236] [2024-10-13 09:30:04,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 09:30:04,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 09:30:04,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 09:30:04,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 09:30:04,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-13 09:30:04,500 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 400 [2024-10-13 09:30:04,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 400 transitions, 840 flow. Second operand has 6 states, 6 states have (on average 315.5) internal successors, (1893), 6 states have internal predecessors, (1893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 09:30:04,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 09:30:04,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 400 [2024-10-13 09:30:04,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand