/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 07:07:25,715 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 07:07:25,799 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 07:07:25,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 07:07:25,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 07:07:25,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 07:07:25,836 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 07:07:25,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 07:07:25,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 07:07:25,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 07:07:25,841 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 07:07:25,842 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 07:07:25,842 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 07:07:25,843 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 07:07:25,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 07:07:25,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 07:07:25,844 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 07:07:25,844 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 07:07:25,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 07:07:25,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 07:07:25,845 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 07:07:25,846 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 07:07:25,846 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 07:07:25,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 07:07:25,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 07:07:25,847 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 07:07:25,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 07:07:25,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:07:25,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 07:07:25,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 07:07:25,849 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 07:07:25,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 07:07:25,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 07:07:25,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 07:07:25,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 07:07:25,850 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 07:07:26,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 07:07:26,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 07:07:26,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 07:07:26,207 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 07:07:26,208 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 07:07:26,209 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-08-25 07:07:27,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 07:07:27,608 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 07:07:27,609 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2023-08-25 07:07:27,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919b1dfa3/3c3a23e6daf0439b84c33fdcbc81c2ee/FLAG858ce3267 [2023-08-25 07:07:27,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/919b1dfa3/3c3a23e6daf0439b84c33fdcbc81c2ee [2023-08-25 07:07:27,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 07:07:27,629 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 07:07:27,630 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 07:07:27,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 07:07:27,632 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 07:07:27,633 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,633 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c6b43b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27, skipping insertion in model container [2023-08-25 07:07:27,634 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,653 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 07:07:27,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:07:27,820 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 07:07:27,846 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 07:07:27,853 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:07:27,853 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 07:07:27,859 INFO L206 MainTranslator]: Completed translation [2023-08-25 07:07:27,860 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27 WrapperNode [2023-08-25 07:07:27,860 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 07:07:27,861 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 07:07:27,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 07:07:27,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 07:07:27,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,875 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,896 INFO L138 Inliner]: procedures = 22, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2023-08-25 07:07:27,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 07:07:27,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 07:07:27,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 07:07:27,897 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 07:07:27,905 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,905 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,937 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,944 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,947 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 07:07:27,948 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 07:07:27,948 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 07:07:27,948 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 07:07:27,949 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (1/1) ... [2023-08-25 07:07:27,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 07:07:27,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:07:27,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 07:07:28,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 07:07:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 07:07:28,027 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 07:07:28,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 07:07:28,028 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 07:07:28,028 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-25 07:07:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 07:07:28,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 07:07:28,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 07:07:28,031 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 07:07:28,174 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 07:07:28,177 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 07:07:28,628 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 07:07:28,879 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 07:07:28,879 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-25 07:07:28,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:07:28 BoogieIcfgContainer [2023-08-25 07:07:28,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 07:07:28,883 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 07:07:28,883 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 07:07:28,886 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 07:07:28,886 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 07:07:27" (1/3) ... [2023-08-25 07:07:28,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a95689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:07:28, skipping insertion in model container [2023-08-25 07:07:28,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 07:07:27" (2/3) ... [2023-08-25 07:07:28,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a95689c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 07:07:28, skipping insertion in model container [2023-08-25 07:07:28,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 07:07:28" (3/3) ... [2023-08-25 07:07:28,890 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2023-08-25 07:07:28,905 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 07:07:28,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-08-25 07:07:28,906 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 07:07:28,993 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-25 07:07:29,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 226 transitions, 476 flow [2023-08-25 07:07:29,144 INFO L124 PetriNetUnfolderBase]: 10/223 cut-off events. [2023-08-25 07:07:29,144 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 07:07:29,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 223 events. 10/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 234 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-08-25 07:07:29,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 226 transitions, 476 flow [2023-08-25 07:07:29,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 212 places, 212 transitions, 442 flow [2023-08-25 07:07:29,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 07:07:29,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 212 places, 212 transitions, 442 flow [2023-08-25 07:07:29,180 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 212 places, 212 transitions, 442 flow [2023-08-25 07:07:29,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 212 places, 212 transitions, 442 flow [2023-08-25 07:07:29,216 INFO L124 PetriNetUnfolderBase]: 10/212 cut-off events. [2023-08-25 07:07:29,216 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 07:07:29,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 212 events. 10/212 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 151. Up to 2 conditions per place. [2023-08-25 07:07:29,221 INFO L119 LiptonReduction]: Number of co-enabled transitions 4150 [2023-08-25 07:07:34,877 INFO L134 LiptonReduction]: Checked pairs total: 12136 [2023-08-25 07:07:34,877 INFO L136 LiptonReduction]: Total number of compositions: 231 [2023-08-25 07:07:34,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 07:07:34,894 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@e90d2ab, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 07:07:34,895 INFO L358 AbstractCegarLoop]: Starting to check reachability of 75 error locations. [2023-08-25 07:07:34,896 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 07:07:34,896 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 07:07:34,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 07:07:34,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:07:34,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 07:07:34,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:07:34,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:07:34,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1107, now seen corresponding path program 1 times [2023-08-25 07:07:34,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:07:34,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601460390] [2023-08-25 07:07:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:07:34,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:07:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:07:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:07:34,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:07:34,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601460390] [2023-08-25 07:07:34,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601460390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:07:34,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:07:34,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 07:07:35,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56619461] [2023-08-25 07:07:35,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:07:35,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 07:07:35,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:07:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 07:07:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 07:07:35,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 457 [2023-08-25 07:07:35,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 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) [2023-08-25 07:07:35,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:07:35,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 457 [2023-08-25 07:07:35,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:07:35,248 INFO L124 PetriNetUnfolderBase]: 563/816 cut-off events. [2023-08-25 07:07:35,248 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-25 07:07:35,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1705 conditions, 816 events. 563/816 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2601 event pairs, 413 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 1384. Up to 817 conditions per place. [2023-08-25 07:07:35,258 INFO L140 encePairwiseOnDemand]: 412/457 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-25 07:07:35,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 122 flow [2023-08-25 07:07:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 07:07:35,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 07:07:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 427 transitions. [2023-08-25 07:07:35,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671772428884026 [2023-08-25 07:07:35,278 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 427 transitions. [2023-08-25 07:07:35,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 427 transitions. [2023-08-25 07:07:35,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:07:35,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 427 transitions. [2023-08-25 07:07:35,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 213.5) internal successors, (427), 2 states have internal predecessors, (427), 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) [2023-08-25 07:07:35,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 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) [2023-08-25 07:07:35,294 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 457.0) internal successors, (1371), 3 states have internal predecessors, (1371), 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) [2023-08-25 07:07:35,296 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 160 flow. Second operand 2 states and 427 transitions. [2023-08-25 07:07:35,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 122 flow [2023-08-25 07:07:35,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-25 07:07:35,303 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 58 flow [2023-08-25 07:07:35,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2023-08-25 07:07:35,309 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -50 predicate places. [2023-08-25 07:07:35,309 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 58 flow [2023-08-25 07:07:35,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 178.5) internal successors, (357), 2 states have internal predecessors, (357), 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) [2023-08-25 07:07:35,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:07:35,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:07:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 07:07:35,311 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:07:35,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:07:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash 33614235, now seen corresponding path program 1 times [2023-08-25 07:07:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:07:35,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210715587] [2023-08-25 07:07:35,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:07:35,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:07:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:07:36,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:07:36,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:07:36,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210715587] [2023-08-25 07:07:36,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210715587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:07:36,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:07:36,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:07:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137263957] [2023-08-25 07:07:36,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:07:36,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:07:36,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:07:36,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:07:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:07:36,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 457 [2023-08-25 07:07:36,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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) [2023-08-25 07:07:36,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:07:36,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 457 [2023-08-25 07:07:36,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:07:36,282 INFO L124 PetriNetUnfolderBase]: 931/1340 cut-off events. [2023-08-25 07:07:36,282 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-25 07:07:36,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 1340 events. 931/1340 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 5040 event pairs, 71 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 2709. Up to 809 conditions per place. [2023-08-25 07:07:36,289 INFO L140 encePairwiseOnDemand]: 451/457 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-25 07:07:36,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 68 transitions, 284 flow [2023-08-25 07:07:36,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:07:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:07:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 920 transitions. [2023-08-25 07:07:36,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026258205689278 [2023-08-25 07:07:36,292 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 920 transitions. [2023-08-25 07:07:36,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 920 transitions. [2023-08-25 07:07:36,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:07:36,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 920 transitions. [2023-08-25 07:07:36,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 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) [2023-08-25 07:07:36,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 07:07:36,301 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 07:07:36,301 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 58 flow. Second operand 5 states and 920 transitions. [2023-08-25 07:07:36,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 68 transitions, 284 flow [2023-08-25 07:07:36,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 68 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 07:07:36,303 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 103 flow [2023-08-25 07:07:36,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-08-25 07:07:36,304 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -43 predicate places. [2023-08-25 07:07:36,304 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 103 flow [2023-08-25 07:07:36,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 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) [2023-08-25 07:07:36,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:07:36,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:07:36,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 07:07:36,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:07:36,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:07:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1469115707, now seen corresponding path program 1 times [2023-08-25 07:07:36,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:07:36,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736403599] [2023-08-25 07:07:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:07:36,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:07:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:07:36,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:07:36,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:07:36,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736403599] [2023-08-25 07:07:36,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736403599] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:07:36,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:07:36,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:07:36,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871802292] [2023-08-25 07:07:36,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:07:36,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:07:36,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:07:36,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:07:36,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:07:36,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 457 [2023-08-25 07:07:36,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 103 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 07:07:36,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:07:36,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 457 [2023-08-25 07:07:36,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:07:37,078 INFO L124 PetriNetUnfolderBase]: 1403/2008 cut-off events. [2023-08-25 07:07:37,078 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2023-08-25 07:07:37,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 2008 events. 1403/2008 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8491 event pairs, 173 based on Foata normal form. 0/1926 useless extension candidates. Maximal degree in co-relation 5172. Up to 1331 conditions per place. [2023-08-25 07:07:37,092 INFO L140 encePairwiseOnDemand]: 451/457 looper letters, 80 selfloop transitions, 8 changer transitions 0/88 dead transitions. [2023-08-25 07:07:37,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 88 transitions, 485 flow [2023-08-25 07:07:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:07:37,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:07:37,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 922 transitions. [2023-08-25 07:07:37,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035010940919037 [2023-08-25 07:07:37,095 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 922 transitions. [2023-08-25 07:07:37,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 922 transitions. [2023-08-25 07:07:37,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:07:37,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 922 transitions. [2023-08-25 07:07:37,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.4) internal successors, (922), 5 states have internal predecessors, (922), 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) [2023-08-25 07:07:37,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 07:07:37,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 07:07:37,103 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 103 flow. Second operand 5 states and 922 transitions. [2023-08-25 07:07:37,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 88 transitions, 485 flow [2023-08-25 07:07:37,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 88 transitions, 478 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:07:37,109 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 172 flow [2023-08-25 07:07:37,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=172, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-25 07:07:37,110 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -37 predicate places. [2023-08-25 07:07:37,110 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 172 flow [2023-08-25 07:07:37,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 07:07:37,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:07:37,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 07:07:37,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 07:07:37,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:07:37,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:07:37,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1944025503, now seen corresponding path program 2 times [2023-08-25 07:07:37,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:07:37,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740473573] [2023-08-25 07:07:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:07:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:07:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:07:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:07:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:07:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740473573] [2023-08-25 07:07:37,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740473573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:07:37,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:07:37,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 07:07:37,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699970119] [2023-08-25 07:07:37,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:07:37,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 07:07:37,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:07:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 07:07:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 07:07:37,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 457 [2023-08-25 07:07:37,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 07:07:37,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:07:37,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 457 [2023-08-25 07:07:37,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:07:38,036 INFO L124 PetriNetUnfolderBase]: 2175/3080 cut-off events. [2023-08-25 07:07:38,036 INFO L125 PetriNetUnfolderBase]: For 3429/3429 co-relation queries the response was YES. [2023-08-25 07:07:38,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9548 conditions, 3080 events. 2175/3080 cut-off events. For 3429/3429 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13068 event pairs, 273 based on Foata normal form. 110/3190 useless extension candidates. Maximal degree in co-relation 9538. Up to 1395 conditions per place. [2023-08-25 07:07:38,061 INFO L140 encePairwiseOnDemand]: 452/457 looper letters, 78 selfloop transitions, 7 changer transitions 2/87 dead transitions. [2023-08-25 07:07:38,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 87 transitions, 561 flow [2023-08-25 07:07:38,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 07:07:38,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 07:07:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 913 transitions. [2023-08-25 07:07:38,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.399562363238512 [2023-08-25 07:07:38,065 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 913 transitions. [2023-08-25 07:07:38,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 913 transitions. [2023-08-25 07:07:38,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:07:38,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 913 transitions. [2023-08-25 07:07:38,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.6) internal successors, (913), 5 states have internal predecessors, (913), 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) [2023-08-25 07:07:38,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 07:07:38,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 457.0) internal successors, (2742), 6 states have internal predecessors, (2742), 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) [2023-08-25 07:07:38,073 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 172 flow. Second operand 5 states and 913 transitions. [2023-08-25 07:07:38,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 87 transitions, 561 flow [2023-08-25 07:07:38,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 87 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:07:38,086 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 230 flow [2023-08-25 07:07:38,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-25 07:07:38,088 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -31 predicate places. [2023-08-25 07:07:38,088 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 230 flow [2023-08-25 07:07:38,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.25) internal successors, (701), 4 states have internal predecessors, (701), 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) [2023-08-25 07:07:38,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:07:38,089 INFO L208 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] [2023-08-25 07:07:38,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 07:07:38,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:07:38,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:07:38,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1449542271, now seen corresponding path program 1 times [2023-08-25 07:07:38,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:07:38,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793558838] [2023-08-25 07:07:38,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:07:38,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:07:38,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:07:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:07:38,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:07:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793558838] [2023-08-25 07:07:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793558838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 07:07:38,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 07:07:38,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 07:07:38,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124534628] [2023-08-25 07:07:38,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 07:07:38,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 07:07:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:07:38,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 07:07:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 07:07:38,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 457 [2023-08-25 07:07:38,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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) [2023-08-25 07:07:38,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:07:38,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 457 [2023-08-25 07:07:38,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:07:39,217 INFO L124 PetriNetUnfolderBase]: 2412/3413 cut-off events. [2023-08-25 07:07:39,218 INFO L125 PetriNetUnfolderBase]: For 5964/5964 co-relation queries the response was YES. [2023-08-25 07:07:39,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11687 conditions, 3413 events. 2412/3413 cut-off events. For 5964/5964 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 15177 event pairs, 62 based on Foata normal form. 206/3619 useless extension candidates. Maximal degree in co-relation 11674. Up to 817 conditions per place. [2023-08-25 07:07:39,245 INFO L140 encePairwiseOnDemand]: 448/457 looper letters, 144 selfloop transitions, 21 changer transitions 0/165 dead transitions. [2023-08-25 07:07:39,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 165 transitions, 1239 flow [2023-08-25 07:07:39,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-25 07:07:39,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-25 07:07:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1653 transitions. [2023-08-25 07:07:39,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40189642596644787 [2023-08-25 07:07:39,250 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1653 transitions. [2023-08-25 07:07:39,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1653 transitions. [2023-08-25 07:07:39,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:07:39,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1653 transitions. [2023-08-25 07:07:39,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.66666666666666) internal successors, (1653), 9 states have internal predecessors, (1653), 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) [2023-08-25 07:07:39,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-25 07:07:39,261 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 457.0) internal successors, (4570), 10 states have internal predecessors, (4570), 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) [2023-08-25 07:07:39,261 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 230 flow. Second operand 9 states and 1653 transitions. [2023-08-25 07:07:39,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 165 transitions, 1239 flow [2023-08-25 07:07:39,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 165 transitions, 1224 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 07:07:39,273 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 384 flow [2023-08-25 07:07:39,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=384, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-08-25 07:07:39,273 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -19 predicate places. [2023-08-25 07:07:39,274 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 384 flow [2023-08-25 07:07:39,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 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) [2023-08-25 07:07:39,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:07:39,274 INFO L208 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] [2023-08-25 07:07:39,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 07:07:39,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:07:39,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:07:39,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1447382229, now seen corresponding path program 2 times [2023-08-25 07:07:39,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:07:39,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171007907] [2023-08-25 07:07:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:07:39,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:07:39,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:07:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:07:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:07:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171007907] [2023-08-25 07:07:41,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171007907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:07:41,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338133941] [2023-08-25 07:07:41,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 07:07:41,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:07:41,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:07:41,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:07:41,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 07:07:42,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 07:07:42,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:07:42,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-25 07:07:42,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:07:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:07:43,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:07:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:07:44,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1338133941] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:07:44,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:07:44,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 23 [2023-08-25 07:07:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864798501] [2023-08-25 07:07:44,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:07:44,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 07:07:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:07:44,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 07:07:44,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-08-25 07:07:44,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 457 [2023-08-25 07:07:44,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 384 flow. Second operand has 25 states, 25 states have (on average 154.56) internal successors, (3864), 25 states have internal predecessors, (3864), 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) [2023-08-25 07:07:44,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:07:44,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 457 [2023-08-25 07:07:44,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:08:08,917 INFO L124 PetriNetUnfolderBase]: 10649/15262 cut-off events. [2023-08-25 07:08:08,917 INFO L125 PetriNetUnfolderBase]: For 48047/48047 co-relation queries the response was YES. [2023-08-25 07:08:08,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64449 conditions, 15262 events. 10649/15262 cut-off events. For 48047/48047 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 86761 event pairs, 159 based on Foata normal form. 32/15294 useless extension candidates. Maximal degree in co-relation 64431. Up to 4001 conditions per place. [2023-08-25 07:08:09,037 INFO L140 encePairwiseOnDemand]: 442/457 looper letters, 514 selfloop transitions, 379 changer transitions 224/1117 dead transitions. [2023-08-25 07:08:09,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 1117 transitions, 9245 flow [2023-08-25 07:08:09,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-08-25 07:08:09,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2023-08-25 07:08:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 15881 transitions. [2023-08-25 07:08:09,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3510156267267865 [2023-08-25 07:08:09,080 INFO L72 ComplementDD]: Start complementDD. Operand 99 states and 15881 transitions. [2023-08-25 07:08:09,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 15881 transitions. [2023-08-25 07:08:09,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:08:09,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 99 states and 15881 transitions. [2023-08-25 07:08:09,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 100 states, 99 states have (on average 160.41414141414143) internal successors, (15881), 99 states have internal predecessors, (15881), 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) [2023-08-25 07:08:09,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 100 states, 100 states have (on average 457.0) internal successors, (45700), 100 states have internal predecessors, (45700), 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) [2023-08-25 07:08:09,206 INFO L81 ComplementDD]: Finished complementDD. Result has 100 states, 100 states have (on average 457.0) internal successors, (45700), 100 states have internal predecessors, (45700), 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) [2023-08-25 07:08:09,206 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 384 flow. Second operand 99 states and 15881 transitions. [2023-08-25 07:08:09,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 1117 transitions, 9245 flow [2023-08-25 07:08:09,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1117 transitions, 9167 flow, removed 39 selfloop flow, removed 0 redundant places. [2023-08-25 07:08:09,303 INFO L231 Difference]: Finished difference. Result has 221 places, 454 transitions, 4766 flow [2023-08-25 07:08:09,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=99, PETRI_FLOW=4766, PETRI_PLACES=221, PETRI_TRANSITIONS=454} [2023-08-25 07:08:09,304 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 143 predicate places. [2023-08-25 07:08:09,305 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 454 transitions, 4766 flow [2023-08-25 07:08:09,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 154.56) internal successors, (3864), 25 states have internal predecessors, (3864), 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) [2023-08-25 07:08:09,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:08:09,307 INFO L208 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] [2023-08-25 07:08:09,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 07:08:09,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-25 07:08:09,522 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:08:09,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:08:09,523 INFO L85 PathProgramCache]: Analyzing trace with hash 377941625, now seen corresponding path program 3 times [2023-08-25 07:08:09,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:08:09,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661352697] [2023-08-25 07:08:09,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:08:09,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:08:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:08:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:08:11,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:08:11,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661352697] [2023-08-25 07:08:11,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661352697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:08:11,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103973250] [2023-08-25 07:08:11,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 07:08:11,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:08:11,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:08:11,249 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:08:11,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 07:08:11,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 07:08:11,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:08:11,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-25 07:08:11,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:08:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:08:12,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:08:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:08:14,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103973250] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:08:14,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:08:14,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 30 [2023-08-25 07:08:14,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871786473] [2023-08-25 07:08:14,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:08:14,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-25 07:08:14,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:08:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-25 07:08:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2023-08-25 07:08:14,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 457 [2023-08-25 07:08:14,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 454 transitions, 4766 flow. Second operand has 32 states, 32 states have (on average 157.25) internal successors, (5032), 32 states have internal predecessors, (5032), 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) [2023-08-25 07:08:14,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:08:14,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 457 [2023-08-25 07:08:14,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:08:44,536 INFO L124 PetriNetUnfolderBase]: 21652/31075 cut-off events. [2023-08-25 07:08:44,537 INFO L125 PetriNetUnfolderBase]: For 783564/783564 co-relation queries the response was YES. [2023-08-25 07:08:44,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217298 conditions, 31075 events. 21652/31075 cut-off events. For 783564/783564 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 196573 event pairs, 151 based on Foata normal form. 34/31109 useless extension candidates. Maximal degree in co-relation 217216. Up to 8149 conditions per place. [2023-08-25 07:08:45,177 INFO L140 encePairwiseOnDemand]: 441/457 looper letters, 746 selfloop transitions, 1288 changer transitions 252/2286 dead transitions. [2023-08-25 07:08:45,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 2286 transitions, 30335 flow [2023-08-25 07:08:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2023-08-25 07:08:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2023-08-25 07:08:45,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 19460 transitions. [2023-08-25 07:08:45,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357832410863689 [2023-08-25 07:08:45,215 INFO L72 ComplementDD]: Start complementDD. Operand 119 states and 19460 transitions. [2023-08-25 07:08:45,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 19460 transitions. [2023-08-25 07:08:45,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:08:45,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 119 states and 19460 transitions. [2023-08-25 07:08:45,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 120 states, 119 states have (on average 163.52941176470588) internal successors, (19460), 119 states have internal predecessors, (19460), 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) [2023-08-25 07:08:45,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 120 states, 120 states have (on average 457.0) internal successors, (54840), 120 states have internal predecessors, (54840), 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) [2023-08-25 07:08:45,323 INFO L81 ComplementDD]: Finished complementDD. Result has 120 states, 120 states have (on average 457.0) internal successors, (54840), 120 states have internal predecessors, (54840), 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) [2023-08-25 07:08:45,324 INFO L175 Difference]: Start difference. First operand has 221 places, 454 transitions, 4766 flow. Second operand 119 states and 19460 transitions. [2023-08-25 07:08:45,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 2286 transitions, 30335 flow [2023-08-25 07:08:52,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 2286 transitions, 28073 flow, removed 1131 selfloop flow, removed 14 redundant places. [2023-08-25 07:08:52,650 INFO L231 Difference]: Finished difference. Result has 378 places, 1487 transitions, 19558 flow [2023-08-25 07:08:52,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=119, PETRI_FLOW=19558, PETRI_PLACES=378, PETRI_TRANSITIONS=1487} [2023-08-25 07:08:52,651 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 300 predicate places. [2023-08-25 07:08:52,651 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 1487 transitions, 19558 flow [2023-08-25 07:08:52,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.25) internal successors, (5032), 32 states have internal predecessors, (5032), 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) [2023-08-25 07:08:52,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:08:52,652 INFO L208 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] [2023-08-25 07:08:52,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 07:08:52,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-25 07:08:52,859 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:08:52,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:08:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash -422577395, now seen corresponding path program 4 times [2023-08-25 07:08:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:08:52,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316012637] [2023-08-25 07:08:52,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:08:52,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:08:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:08:55,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:08:55,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:08:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316012637] [2023-08-25 07:08:55,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316012637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:08:55,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661263892] [2023-08-25 07:08:55,015 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 07:08:55,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:08:55,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:08:55,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:08:55,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 07:08:55,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 07:08:55,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 07:08:55,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-25 07:08:55,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:08:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:08:56,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:08:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:08:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661263892] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:08:57,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:08:57,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-08-25 07:08:57,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691495829] [2023-08-25 07:08:57,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:08:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 07:08:57,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:08:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 07:08:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-08-25 07:08:57,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 457 [2023-08-25 07:08:57,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 1487 transitions, 19558 flow. Second operand has 25 states, 25 states have (on average 157.76) internal successors, (3944), 25 states have internal predecessors, (3944), 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) [2023-08-25 07:08:57,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:08:57,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 457 [2023-08-25 07:08:57,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:10:15,659 INFO L124 PetriNetUnfolderBase]: 41342/59720 cut-off events. [2023-08-25 07:10:15,660 INFO L125 PetriNetUnfolderBase]: For 3904724/3904724 co-relation queries the response was YES. [2023-08-25 07:10:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 551174 conditions, 59720 events. 41342/59720 cut-off events. For 3904724/3904724 co-relation queries the response was YES. Maximal size of possible extension queue 2823. Compared 412762 event pairs, 1074 based on Foata normal form. 33/59753 useless extension candidates. Maximal degree in co-relation 551034. Up to 12751 conditions per place. [2023-08-25 07:10:17,414 INFO L140 encePairwiseOnDemand]: 444/457 looper letters, 1690 selfloop transitions, 2490 changer transitions 758/4938 dead transitions. [2023-08-25 07:10:17,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 4938 transitions, 81210 flow [2023-08-25 07:10:17,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2023-08-25 07:10:17,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2023-08-25 07:10:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 24087 transitions. [2023-08-25 07:10:17,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35854954673335415 [2023-08-25 07:10:17,450 INFO L72 ComplementDD]: Start complementDD. Operand 147 states and 24087 transitions. [2023-08-25 07:10:17,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 147 states and 24087 transitions. [2023-08-25 07:10:17,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:10:17,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 147 states and 24087 transitions. [2023-08-25 07:10:17,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 148 states, 147 states have (on average 163.85714285714286) internal successors, (24087), 147 states have internal predecessors, (24087), 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) [2023-08-25 07:10:17,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 148 states, 148 states have (on average 457.0) internal successors, (67636), 148 states have internal predecessors, (67636), 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) [2023-08-25 07:10:17,566 INFO L81 ComplementDD]: Finished complementDD. Result has 148 states, 148 states have (on average 457.0) internal successors, (67636), 148 states have internal predecessors, (67636), 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) [2023-08-25 07:10:17,567 INFO L175 Difference]: Start difference. First operand has 378 places, 1487 transitions, 19558 flow. Second operand 147 states and 24087 transitions. [2023-08-25 07:10:17,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 4938 transitions, 81210 flow [2023-08-25 07:11:34,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 4938 transitions, 76678 flow, removed 2234 selfloop flow, removed 20 redundant places. [2023-08-25 07:11:35,008 INFO L231 Difference]: Finished difference. Result has 581 places, 3140 transitions, 50495 flow [2023-08-25 07:11:35,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=18007, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=947, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=147, PETRI_FLOW=50495, PETRI_PLACES=581, PETRI_TRANSITIONS=3140} [2023-08-25 07:11:35,010 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 503 predicate places. [2023-08-25 07:11:35,010 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 3140 transitions, 50495 flow [2023-08-25 07:11:35,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 157.76) internal successors, (3944), 25 states have internal predecessors, (3944), 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) [2023-08-25 07:11:35,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:11:35,011 INFO L208 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] [2023-08-25 07:11:35,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 07:11:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:11:35,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:11:35,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:11:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1426920799, now seen corresponding path program 1 times [2023-08-25 07:11:35,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:11:35,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260378936] [2023-08-25 07:11:35,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:11:35,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:11:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:11:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:11:35,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:11:35,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260378936] [2023-08-25 07:11:35,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260378936] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:11:35,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93108070] [2023-08-25 07:11:35,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:11:35,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:11:35,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:11:35,764 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:11:35,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 07:11:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:11:35,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-25 07:11:35,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:11:36,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:11:36,236 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:11:36,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:11:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93108070] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:11:36,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:11:36,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-25 07:11:36,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264015007] [2023-08-25 07:11:36,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:11:36,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 07:11:36,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:11:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 07:11:36,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-08-25 07:11:36,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 457 [2023-08-25 07:11:36,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 3140 transitions, 50495 flow. Second operand has 18 states, 18 states have (on average 166.33333333333334) internal successors, (2994), 18 states have internal predecessors, (2994), 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) [2023-08-25 07:11:36,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:11:36,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 457 [2023-08-25 07:11:36,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 07:12:37,110 INFO L124 PetriNetUnfolderBase]: 51455/74862 cut-off events. [2023-08-25 07:12:37,110 INFO L125 PetriNetUnfolderBase]: For 7960700/7960700 co-relation queries the response was YES. [2023-08-25 07:12:40,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 825081 conditions, 74862 events. 51455/74862 cut-off events. For 7960700/7960700 co-relation queries the response was YES. Maximal size of possible extension queue 3402. Compared 539467 event pairs, 1601 based on Foata normal form. 548/75410 useless extension candidates. Maximal degree in co-relation 824859. Up to 25382 conditions per place. [2023-08-25 07:12:40,447 INFO L140 encePairwiseOnDemand]: 446/457 looper letters, 3511 selfloop transitions, 3291 changer transitions 0/6802 dead transitions. [2023-08-25 07:12:40,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 6802 transitions, 124582 flow [2023-08-25 07:12:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-25 07:12:40,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-25 07:12:40,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8783 transitions. [2023-08-25 07:12:40,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37683957609301927 [2023-08-25 07:12:40,456 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8783 transitions. [2023-08-25 07:12:40,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8783 transitions. [2023-08-25 07:12:40,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 07:12:40,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8783 transitions. [2023-08-25 07:12:40,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 172.2156862745098) internal successors, (8783), 51 states have internal predecessors, (8783), 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) [2023-08-25 07:12:40,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 457.0) internal successors, (23764), 52 states have internal predecessors, (23764), 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) [2023-08-25 07:12:40,486 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 457.0) internal successors, (23764), 52 states have internal predecessors, (23764), 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) [2023-08-25 07:12:40,486 INFO L175 Difference]: Start difference. First operand has 581 places, 3140 transitions, 50495 flow. Second operand 51 states and 8783 transitions. [2023-08-25 07:12:40,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 6802 transitions, 124582 flow [2023-08-25 07:17:48,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 6802 transitions, 115000 flow, removed 4754 selfloop flow, removed 35 redundant places. [2023-08-25 07:17:48,770 INFO L231 Difference]: Finished difference. Result has 588 places, 5433 transitions, 93972 flow [2023-08-25 07:17:48,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=457, PETRI_DIFFERENCE_MINUEND_FLOW=45291, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1316, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=93972, PETRI_PLACES=588, PETRI_TRANSITIONS=5433} [2023-08-25 07:17:48,773 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 510 predicate places. [2023-08-25 07:17:48,773 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 5433 transitions, 93972 flow [2023-08-25 07:17:48,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 166.33333333333334) internal successors, (2994), 18 states have internal predecessors, (2994), 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) [2023-08-25 07:17:48,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 07:17:48,774 INFO L208 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] [2023-08-25 07:17:48,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 07:17:48,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:17:48,980 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 71 more)] === [2023-08-25 07:17:48,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 07:17:48,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1878556247, now seen corresponding path program 1 times [2023-08-25 07:17:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 07:17:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509306658] [2023-08-25 07:17:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:17:48,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 07:17:49,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:17:49,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 07:17:49,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 07:17:49,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509306658] [2023-08-25 07:17:49,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509306658] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 07:17:49,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609174075] [2023-08-25 07:17:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 07:17:49,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 07:17:49,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 07:17:49,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 07:17:49,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 07:17:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 07:17:49,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 07:17:49,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 07:17:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:17:49,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 07:17:49,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 07:17:49,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609174075] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 07:17:49,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 07:17:49,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 14 [2023-08-25 07:17:49,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969389138] [2023-08-25 07:17:49,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 07:17:49,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 07:17:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 07:17:49,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 07:17:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-08-25 07:17:49,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 457 [2023-08-25 07:17:49,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 5433 transitions, 93972 flow. Second operand has 14 states, 14 states have (on average 172.42857142857142) internal successors, (2414), 14 states have internal predecessors, (2414), 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) [2023-08-25 07:17:49,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 07:17:49,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 457 [2023-08-25 07:17:49,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-25 07:20:35,477 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 07:20:35,477 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 07:20:36,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 07:20:36,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown