./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/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.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 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:04:59,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:04:59,733 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:04:59,738 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:04:59,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:04:59,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:04:59,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:04:59,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:04:59,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:04:59,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:04:59,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:04:59,802 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:04:59,803 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:04:59,805 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:04:59,805 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:04:59,805 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:04:59,806 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:04:59,806 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:04:59,806 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:04:59,806 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:04:59,807 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:04:59,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:04:59,811 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:04:59,811 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:04:59,811 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:04:59,811 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:04:59,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:04:59,812 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:04:59,812 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:04:59,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:04:59,813 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:04:59,813 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:04:59,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:04:59,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:04:59,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:04:59,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:04:59,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:04:59,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:04:59,815 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:04:59,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:04:59,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:04:59,816 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-10-24 15:05:00,087 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:05:00,111 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:05:00,115 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:05:00,116 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:05:00,116 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:05:00,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-10-24 15:05:01,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:05:01,794 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:05:01,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-10-24 15:05:01,809 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca63800ad/613df71c7d1f4fa8bf3ffe46c61f79ce/FLAG54b1eb223 [2024-10-24 15:05:01,825 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca63800ad/613df71c7d1f4fa8bf3ffe46c61f79ce [2024-10-24 15:05:01,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:05:01,829 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:05:01,830 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:05:01,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:05:01,838 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:05:01,838 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:01" (1/1) ... [2024-10-24 15:05:01,839 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c4fa53a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:01, skipping insertion in model container [2024-10-24 15:05:01,840 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:01" (1/1) ... [2024-10-24 15:05:01,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:05:02,273 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:05:02,289 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:05:02,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:05:02,386 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:05:02,386 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02 WrapperNode [2024-10-24 15:05:02,387 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:05:02,388 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:05:02,388 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:05:02,388 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:05:02,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,435 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 93 [2024-10-24 15:05:02,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:05:02,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:05:02,436 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:05:02,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:05:02,443 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,443 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,458 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,467 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,469 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,473 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,480 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:05:02,481 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:05:02,481 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:05:02,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:05:02,482 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (1/1) ... [2024-10-24 15:05:02,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:05:02,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:02,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 15:05:02,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 15:05:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 15:05:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 15:05:02,575 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 15:05:02,575 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-24 15:05:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:05:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:05:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-24 15:05:02,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:05:02,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:05:02,577 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:05:02,690 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:05:02,692 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:05:02,876 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:05:02,877 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:05:02,910 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:05:02,911 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 15:05:02,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:02 BoogieIcfgContainer [2024-10-24 15:05:02,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:05:02,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:05:02,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:05:02,919 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:05:02,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:05:01" (1/3) ... [2024-10-24 15:05:02,920 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bcf67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:02, skipping insertion in model container [2024-10-24 15:05:02,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:02" (2/3) ... [2024-10-24 15:05:02,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43bcf67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:02, skipping insertion in model container [2024-10-24 15:05:02,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:02" (3/3) ... [2024-10-24 15:05:02,922 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-10-24 15:05:02,936 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:05:02,936 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-10-24 15:05:02,936 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:05:03,005 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:03,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 108 transitions, 220 flow [2024-10-24 15:05:03,095 INFO L124 PetriNetUnfolderBase]: 10/117 cut-off events. [2024-10-24 15:05:03,095 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:03,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 117 events. 10/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2024-10-24 15:05:03,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 108 transitions, 220 flow [2024-10-24 15:05:03,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 108 transitions, 220 flow [2024-10-24 15:05:03,122 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:03,132 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;@41b7fff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:03,133 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-10-24 15:05:03,155 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:03,156 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-10-24 15:05:03,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:03,156 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:03,159 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] [2024-10-24 15:05:03,160 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-10-24 15:05:03,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -614596222, now seen corresponding path program 1 times [2024-10-24 15:05:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:03,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460021076] [2024-10-24 15:05:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:03,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:03,330 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:03,404 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:03,406 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:03,407 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-10-24 15:05:03,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-10-24 15:05:03,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-10-24 15:05:03,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-10-24 15:05:03,409 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-10-24 15:05:03,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-10-24 15:05:03,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-10-24 15:05:03,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-10-24 15:05:03,410 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-10-24 15:05:03,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:05:03,411 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 15:05:03,414 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:03,414 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:05:03,466 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:03,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 179 transitions, 368 flow [2024-10-24 15:05:03,543 INFO L124 PetriNetUnfolderBase]: 19/199 cut-off events. [2024-10-24 15:05:03,543 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:05:03,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 199 events. 19/199 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 454 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 151. Up to 6 conditions per place. [2024-10-24 15:05:03,548 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 179 transitions, 368 flow [2024-10-24 15:05:03,554 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 179 transitions, 368 flow [2024-10-24 15:05:03,557 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:03,558 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;@41b7fff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:03,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-10-24 15:05:03,577 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:03,577 INFO L124 PetriNetUnfolderBase]: 4/81 cut-off events. [2024-10-24 15:05:03,577 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:05:03,577 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:03,578 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] [2024-10-24 15:05:03,578 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-10-24 15:05:03,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2111935072, now seen corresponding path program 1 times [2024-10-24 15:05:03,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:03,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852683419] [2024-10-24 15:05:03,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:03,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:03,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:03,613 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:03,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:03,654 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:03,654 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-10-24 15:05:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-10-24 15:05:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-10-24 15:05:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-10-24 15:05:03,655 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-10-24 15:05:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-10-24 15:05:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-10-24 15:05:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-10-24 15:05:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-10-24 15:05:03,656 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-10-24 15:05:03,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-10-24 15:05:03,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-10-24 15:05:03,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-10-24 15:05:03,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:05:03,657 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 15:05:03,658 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:03,658 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:05:03,720 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:03,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 250 transitions, 518 flow [2024-10-24 15:05:03,793 INFO L124 PetriNetUnfolderBase]: 28/281 cut-off events. [2024-10-24 15:05:03,793 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:05:03,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 281 events. 28/281 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 846 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 221. Up to 8 conditions per place. [2024-10-24 15:05:03,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 250 transitions, 518 flow [2024-10-24 15:05:03,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 250 transitions, 518 flow [2024-10-24 15:05:03,807 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:03,808 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;@41b7fff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:03,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 15:05:03,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:03,823 INFO L124 PetriNetUnfolderBase]: 7/116 cut-off events. [2024-10-24 15:05:03,823 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:05:03,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:03,823 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] [2024-10-24 15:05:03,824 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:05:03,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:03,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1059234158, now seen corresponding path program 1 times [2024-10-24 15:05:03,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:03,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188850939] [2024-10-24 15:05:03,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:03,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:03,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:03,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:03,905 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:03,905 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-24 15:05:03,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-24 15:05:03,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-24 15:05:03,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-24 15:05:03,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-24 15:05:03,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-24 15:05:03,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-24 15:05:03,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-24 15:05:03,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-24 15:05:03,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-24 15:05:03,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-24 15:05:03,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-24 15:05:03,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-24 15:05:03,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-24 15:05:03,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-24 15:05:03,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-24 15:05:03,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-24 15:05:03,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:05:03,910 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 15:05:03,911 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:03,911 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 15:05:03,994 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 321 transitions, 670 flow [2024-10-24 15:05:04,089 INFO L124 PetriNetUnfolderBase]: 37/363 cut-off events. [2024-10-24 15:05:04,089 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:05:04,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 363 events. 37/363 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1268 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 291. Up to 10 conditions per place. [2024-10-24 15:05:04,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 321 transitions, 670 flow [2024-10-24 15:05:04,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 321 transitions, 670 flow [2024-10-24 15:05:04,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:04,106 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;@41b7fff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:04,106 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-10-24 15:05:04,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:04,125 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2024-10-24 15:05:04,125 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 15:05:04,125 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:04,126 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:04,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:05:04,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2118607068, now seen corresponding path program 1 times [2024-10-24 15:05:04,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:04,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380029470] [2024-10-24 15:05:04,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:04,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:04,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380029470] [2024-10-24 15:05:04,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380029470] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:04,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:04,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:04,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762526618] [2024-10-24 15:05:04,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:04,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:04,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:04,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:04,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2024-10-24 15:05:04,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 321 transitions, 670 flow. Second operand has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:04,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:04,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2024-10-24 15:05:04,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:06,095 INFO L124 PetriNetUnfolderBase]: 1135/6759 cut-off events. [2024-10-24 15:05:06,095 INFO L125 PetriNetUnfolderBase]: For 1363/1363 co-relation queries the response was YES. [2024-10-24 15:05:06,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8578 conditions, 6759 events. 1135/6759 cut-off events. For 1363/1363 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 71470 event pairs, 690 based on Foata normal form. 1675/7448 useless extension candidates. Maximal degree in co-relation 2228. Up to 1091 conditions per place. [2024-10-24 15:05:06,316 INFO L140 encePairwiseOnDemand]: 300/321 looper letters, 27 selfloop transitions, 2 changer transitions 0/302 dead transitions. [2024-10-24 15:05:06,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 302 transitions, 711 flow [2024-10-24 15:05:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:06,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 905 transitions. [2024-10-24 15:05:06,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9397715472481828 [2024-10-24 15:05:06,343 INFO L175 Difference]: Start difference. First operand has 297 places, 321 transitions, 670 flow. Second operand 3 states and 905 transitions. [2024-10-24 15:05:06,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 302 transitions, 711 flow [2024-10-24 15:05:06,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 302 transitions, 699 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:06,365 INFO L231 Difference]: Finished difference. Result has 288 places, 293 transitions, 618 flow [2024-10-24 15:05:06,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=618, PETRI_PLACES=288, PETRI_TRANSITIONS=293} [2024-10-24 15:05:06,373 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -9 predicate places. [2024-10-24 15:05:06,373 INFO L471 AbstractCegarLoop]: Abstraction has has 288 places, 293 transitions, 618 flow [2024-10-24 15:05:06,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.3333333333333) internal successors, (847), 3 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:06,374 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:06,375 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] [2024-10-24 15:05:06,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 15:05:06,375 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:05:06,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1083943162, now seen corresponding path program 1 times [2024-10-24 15:05:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:06,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998727902] [2024-10-24 15:05:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:06,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:06,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:06,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:06,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998727902] [2024-10-24 15:05:06,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998727902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:06,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:06,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:06,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859167573] [2024-10-24 15:05:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:06,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:06,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:07,264 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2024-10-24 15:05:07,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 293 transitions, 618 flow. Second operand has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:07,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:07,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2024-10-24 15:05:07,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:09,314 INFO L124 PetriNetUnfolderBase]: 1956/10203 cut-off events. [2024-10-24 15:05:09,314 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2024-10-24 15:05:09,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13256 conditions, 10203 events. 1956/10203 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 114447 event pairs, 609 based on Foata normal form. 0/8885 useless extension candidates. Maximal degree in co-relation 6575. Up to 971 conditions per place. [2024-10-24 15:05:09,511 INFO L140 encePairwiseOnDemand]: 315/321 looper letters, 54 selfloop transitions, 6 changer transitions 0/328 dead transitions. [2024-10-24 15:05:09,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 328 transitions, 868 flow [2024-10-24 15:05:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:09,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:09,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2024-10-24 15:05:09,516 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8878504672897196 [2024-10-24 15:05:09,516 INFO L175 Difference]: Start difference. First operand has 288 places, 293 transitions, 618 flow. Second operand 6 states and 1710 transitions. [2024-10-24 15:05:09,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 328 transitions, 868 flow [2024-10-24 15:05:09,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 328 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:09,531 INFO L231 Difference]: Finished difference. Result has 291 places, 292 transitions, 626 flow [2024-10-24 15:05:09,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=626, PETRI_PLACES=291, PETRI_TRANSITIONS=292} [2024-10-24 15:05:09,532 INFO L277 CegarLoopForPetriNet]: 297 programPoint places, -6 predicate places. [2024-10-24 15:05:09,533 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 292 transitions, 626 flow [2024-10-24 15:05:09,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:09,535 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:09,535 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-24 15:05:09,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:05:09,536 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-10-24 15:05:09,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:09,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2112297515, now seen corresponding path program 1 times [2024-10-24 15:05:09,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:09,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379603106] [2024-10-24 15:05:09,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:09,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:09,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:09,570 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:09,570 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:09,570 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-10-24 15:05:09,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-10-24 15:05:09,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-10-24 15:05:09,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-10-24 15:05:09,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-10-24 15:05:09,571 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-10-24 15:05:09,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-10-24 15:05:09,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-10-24 15:05:09,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-10-24 15:05:09,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-10-24 15:05:09,572 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-10-24 15:05:09,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-10-24 15:05:09,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-10-24 15:05:09,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-10-24 15:05:09,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-10-24 15:05:09,573 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-10-24 15:05:09,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-10-24 15:05:09,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-10-24 15:05:09,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-10-24 15:05:09,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-10-24 15:05:09,574 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-10-24 15:05:09,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:05:09,575 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-24 15:05:09,575 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:09,576 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-24 15:05:09,636 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:09,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 392 transitions, 824 flow [2024-10-24 15:05:09,846 INFO L124 PetriNetUnfolderBase]: 46/445 cut-off events. [2024-10-24 15:05:09,848 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 15:05:09,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 445 events. 46/445 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1692 event pairs, 0 based on Foata normal form. 0/373 useless extension candidates. Maximal degree in co-relation 376. Up to 12 conditions per place. [2024-10-24 15:05:09,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 362 places, 392 transitions, 824 flow [2024-10-24 15:05:09,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 392 transitions, 824 flow [2024-10-24 15:05:09,860 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:09,861 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;@41b7fff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:09,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-24 15:05:09,871 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:09,872 INFO L124 PetriNetUnfolderBase]: 7/128 cut-off events. [2024-10-24 15:05:09,872 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 15:05:09,872 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:09,872 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:09,872 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:05:09,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:09,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1502068832, now seen corresponding path program 1 times [2024-10-24 15:05:09,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:09,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293348255] [2024-10-24 15:05:09,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:09,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:09,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:09,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:09,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293348255] [2024-10-24 15:05:09,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293348255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:09,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:09,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:09,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902791525] [2024-10-24 15:05:09,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:09,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:09,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:09,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:09,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:09,935 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 392 [2024-10-24 15:05:09,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 392 transitions, 824 flow. Second operand has 3 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:09,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:09,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 392 [2024-10-24 15:05:09,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:15,213 INFO L124 PetriNetUnfolderBase]: 4345/23799 cut-off events. [2024-10-24 15:05:15,214 INFO L125 PetriNetUnfolderBase]: For 6661/6661 co-relation queries the response was YES. [2024-10-24 15:05:15,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30479 conditions, 23799 events. 4345/23799 cut-off events. For 6661/6661 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 313376 event pairs, 2796 based on Foata normal form. 6603/27022 useless extension candidates. Maximal degree in co-relation 8530. Up to 4007 conditions per place. [2024-10-24 15:05:15,739 INFO L140 encePairwiseOnDemand]: 367/392 looper letters, 33 selfloop transitions, 2 changer transitions 0/370 dead transitions. [2024-10-24 15:05:15,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 370 transitions, 882 flow [2024-10-24 15:05:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:15,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1108 transitions. [2024-10-24 15:05:15,742 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9421768707482994 [2024-10-24 15:05:15,742 INFO L175 Difference]: Start difference. First operand has 362 places, 392 transitions, 824 flow. Second operand 3 states and 1108 transitions. [2024-10-24 15:05:15,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 370 transitions, 882 flow [2024-10-24 15:05:15,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 370 transitions, 858 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:15,752 INFO L231 Difference]: Finished difference. Result has 351 places, 358 transitions, 754 flow [2024-10-24 15:05:15,753 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=392, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=754, PETRI_PLACES=351, PETRI_TRANSITIONS=358} [2024-10-24 15:05:15,755 INFO L277 CegarLoopForPetriNet]: 362 programPoint places, -11 predicate places. [2024-10-24 15:05:15,755 INFO L471 AbstractCegarLoop]: Abstraction has has 351 places, 358 transitions, 754 flow [2024-10-24 15:05:15,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 345.3333333333333) internal successors, (1036), 3 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:15,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:15,756 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] [2024-10-24 15:05:15,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:05:15,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:05:15,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1296174910, now seen corresponding path program 1 times [2024-10-24 15:05:15,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:15,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144868686] [2024-10-24 15:05:15,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:15,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:16,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:16,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:16,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144868686] [2024-10-24 15:05:16,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144868686] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:16,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:16,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523366365] [2024-10-24 15:05:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:16,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:16,484 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 392 [2024-10-24 15:05:16,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 358 transitions, 754 flow. Second operand has 6 states, 6 states have (on average 339.6666666666667) internal successors, (2038), 6 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:16,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:16,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 392 [2024-10-24 15:05:16,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:23,325 INFO L124 PetriNetUnfolderBase]: 7356/32487 cut-off events. [2024-10-24 15:05:23,325 INFO L125 PetriNetUnfolderBase]: For 4926/4926 co-relation queries the response was YES. [2024-10-24 15:05:23,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43155 conditions, 32487 events. 7356/32487 cut-off events. For 4926/4926 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 433216 event pairs, 2472 based on Foata normal form. 0/28430 useless extension candidates. Maximal degree in co-relation 21443. Up to 3563 conditions per place. [2024-10-24 15:05:24,084 INFO L140 encePairwiseOnDemand]: 386/392 looper letters, 69 selfloop transitions, 6 changer transitions 0/405 dead transitions. [2024-10-24 15:05:24,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 405 transitions, 1078 flow [2024-10-24 15:05:24,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:24,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2103 transitions. [2024-10-24 15:05:24,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8941326530612245 [2024-10-24 15:05:24,088 INFO L175 Difference]: Start difference. First operand has 351 places, 358 transitions, 754 flow. Second operand 6 states and 2103 transitions. [2024-10-24 15:05:24,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 405 transitions, 1078 flow [2024-10-24 15:05:24,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 405 transitions, 1076 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:24,107 INFO L231 Difference]: Finished difference. Result has 354 places, 357 transitions, 762 flow [2024-10-24 15:05:24,107 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=392, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=762, PETRI_PLACES=354, PETRI_TRANSITIONS=357} [2024-10-24 15:05:24,108 INFO L277 CegarLoopForPetriNet]: 362 programPoint places, -8 predicate places. [2024-10-24 15:05:24,109 INFO L471 AbstractCegarLoop]: Abstraction has has 354 places, 357 transitions, 762 flow [2024-10-24 15:05:24,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 339.6666666666667) internal successors, (2038), 6 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:24,110 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:24,111 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, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:24,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-24 15:05:24,112 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:05:24,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:24,114 INFO L85 PathProgramCache]: Analyzing trace with hash -473375276, now seen corresponding path program 1 times [2024-10-24 15:05:24,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:24,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771022990] [2024-10-24 15:05:24,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:24,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:24,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:24,155 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:24,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:24,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771022990] [2024-10-24 15:05:24,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771022990] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:24,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:24,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:24,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761275097] [2024-10-24 15:05:24,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:24,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:24,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:24,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:24,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:24,181 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 392 [2024-10-24 15:05:24,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 357 transitions, 762 flow. Second operand has 3 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:24,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:24,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 392 [2024-10-24 15:05:24,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:28,188 INFO L124 PetriNetUnfolderBase]: 4077/20387 cut-off events. [2024-10-24 15:05:28,188 INFO L125 PetriNetUnfolderBase]: For 2322/2322 co-relation queries the response was YES. [2024-10-24 15:05:28,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26027 conditions, 20387 events. 4077/20387 cut-off events. For 2322/2322 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 259817 event pairs, 2550 based on Foata normal form. 120/17590 useless extension candidates. Maximal degree in co-relation 25919. Up to 3994 conditions per place. [2024-10-24 15:05:28,588 INFO L140 encePairwiseOnDemand]: 389/392 looper letters, 32 selfloop transitions, 2 changer transitions 0/369 dead transitions. [2024-10-24 15:05:28,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 369 transitions, 869 flow [2024-10-24 15:05:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1064 transitions. [2024-10-24 15:05:28,591 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2024-10-24 15:05:28,591 INFO L175 Difference]: Start difference. First operand has 354 places, 357 transitions, 762 flow. Second operand 3 states and 1064 transitions. [2024-10-24 15:05:28,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 369 transitions, 869 flow [2024-10-24 15:05:28,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 369 transitions, 857 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-24 15:05:28,603 INFO L231 Difference]: Finished difference. Result has 352 places, 358 transitions, 762 flow [2024-10-24 15:05:28,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=392, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=762, PETRI_PLACES=352, PETRI_TRANSITIONS=358} [2024-10-24 15:05:28,604 INFO L277 CegarLoopForPetriNet]: 362 programPoint places, -10 predicate places. [2024-10-24 15:05:28,605 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 358 transitions, 762 flow [2024-10-24 15:05:28,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:28,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:28,606 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:28,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 15:05:28,607 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:05:28,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash -564147914, now seen corresponding path program 1 times [2024-10-24 15:05:28,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:28,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360309287] [2024-10-24 15:05:28,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:28,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:29,149 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:29,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:29,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360309287] [2024-10-24 15:05:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360309287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:29,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:29,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:29,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163136203] [2024-10-24 15:05:29,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:29,154 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:29,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:29,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:29,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:29,474 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 392 [2024-10-24 15:05:29,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 358 transitions, 762 flow. Second operand has 6 states, 6 states have (on average 339.8333333333333) internal successors, (2039), 6 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:29,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:29,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 392 [2024-10-24 15:05:29,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:35,998 INFO L124 PetriNetUnfolderBase]: 7184/32320 cut-off events. [2024-10-24 15:05:35,999 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES. [2024-10-24 15:05:36,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42914 conditions, 32320 events. 7184/32320 cut-off events. For 4516/4516 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 440097 event pairs, 2307 based on Foata normal form. 0/28068 useless extension candidates. Maximal degree in co-relation 42809. Up to 3552 conditions per place. [2024-10-24 15:05:36,699 INFO L140 encePairwiseOnDemand]: 386/392 looper letters, 65 selfloop transitions, 6 changer transitions 0/401 dead transitions. [2024-10-24 15:05:36,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 401 transitions, 1050 flow [2024-10-24 15:05:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:36,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2099 transitions. [2024-10-24 15:05:36,706 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8924319727891157 [2024-10-24 15:05:36,706 INFO L175 Difference]: Start difference. First operand has 352 places, 358 transitions, 762 flow. Second operand 6 states and 2099 transitions. [2024-10-24 15:05:36,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 401 transitions, 1050 flow [2024-10-24 15:05:36,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 401 transitions, 1048 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-24 15:05:36,721 INFO L231 Difference]: Finished difference. Result has 355 places, 357 transitions, 770 flow [2024-10-24 15:05:36,722 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=392, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=770, PETRI_PLACES=355, PETRI_TRANSITIONS=357} [2024-10-24 15:05:36,723 INFO L277 CegarLoopForPetriNet]: 362 programPoint places, -7 predicate places. [2024-10-24 15:05:36,723 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 357 transitions, 770 flow [2024-10-24 15:05:36,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 339.8333333333333) internal successors, (2039), 6 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:36,725 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:36,725 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:36,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 15:05:36,725 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:05:36,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:36,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1657900214, now seen corresponding path program 1 times [2024-10-24 15:05:36,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:36,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375738796] [2024-10-24 15:05:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:36,738 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:36,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:36,758 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:36,758 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-10-24 15:05:36,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2024-10-24 15:05:36,758 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2024-10-24 15:05:36,759 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2024-10-24 15:05:36,760 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2024-10-24 15:05:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2024-10-24 15:05:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2024-10-24 15:05:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2024-10-24 15:05:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2024-10-24 15:05:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2024-10-24 15:05:36,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2024-10-24 15:05:36,761 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 15:05:36,762 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-10-24 15:05:36,762 WARN L239 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:36,763 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2024-10-24 15:05:36,824 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:36,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 463 transitions, 980 flow [2024-10-24 15:05:36,917 INFO L124 PetriNetUnfolderBase]: 55/527 cut-off events. [2024-10-24 15:05:36,917 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-10-24 15:05:36,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 527 events. 55/527 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2143 event pairs, 0 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 464. Up to 14 conditions per place. [2024-10-24 15:05:36,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 463 transitions, 980 flow [2024-10-24 15:05:36,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 463 transitions, 980 flow [2024-10-24 15:05:36,941 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:36,942 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;@41b7fff5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:36,942 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-10-24 15:05:36,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:36,953 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2024-10-24 15:05:36,953 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-24 15:05:36,953 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:36,953 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:36,953 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-24 15:05:36,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1723244119, now seen corresponding path program 1 times [2024-10-24 15:05:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:36,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916561433] [2024-10-24 15:05:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:36,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:36,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:36,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916561433] [2024-10-24 15:05:36,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916561433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:36,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:36,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:36,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625042406] [2024-10-24 15:05:36,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:36,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:37,025 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 463 [2024-10-24 15:05:37,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 463 transitions, 980 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:37,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:37,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 463 [2024-10-24 15:05:37,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand