/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 --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -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/mult-comm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:06:07,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:06:07,635 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 [2023-08-26 09:06:07,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:06:07,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:06:07,664 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:06:07,665 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:06:07,665 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:06:07,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:06:07,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:06:07,670 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:06:07,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:06:07,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:06:07,671 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:06:07,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:06:07,672 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:06:07,672 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:06:07,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:06:07,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:06:07,673 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:06:07,673 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:06:07,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:06:07,674 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:06:07,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:06:07,675 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:06:07,675 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:06:07,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:06:07,675 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:06:07,676 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:06:07,676 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:06:07,677 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:06:07,677 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:06:07,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:06:07,677 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:06:07,678 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:06:07,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:06:07,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:06:08,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:06:08,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:06:08,005 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:06:08,006 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:06:08,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-08-26 09:06:09,000 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:06:09,233 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:06:09,234 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-08-26 09:06:09,240 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5d2b6f0/ebef027ecef643b2beb9ca7fa122a0b4/FLAG29a4edcf0 [2023-08-26 09:06:09,250 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c5d2b6f0/ebef027ecef643b2beb9ca7fa122a0b4 [2023-08-26 09:06:09,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:06:09,253 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:06:09,254 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:06:09,254 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:06:09,256 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:06:09,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9ab885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09, skipping insertion in model container [2023-08-26 09:06:09,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,275 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:06:09,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:06:09,408 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:06:09,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:06:09,451 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:06:09,452 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09 WrapperNode [2023-08-26 09:06:09,452 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:06:09,453 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:06:09,453 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:06:09,453 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:06:09,458 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,473 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,499 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2023-08-26 09:06:09,500 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:06:09,501 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:06:09,501 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:06:09,501 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:06:09,508 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,509 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,514 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,514 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,533 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,534 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,536 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:06:09,537 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:06:09,537 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:06:09,537 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:06:09,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (1/1) ... [2023-08-26 09:06:09,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:06:09,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:09,579 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) [2023-08-26 09:06:09,603 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 [2023-08-26 09:06:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:06:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:06:09,624 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:06:09,624 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:06:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:06:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:06:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:06:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:06:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:06:09,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:06:09,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:06:09,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:06:09,627 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 09:06:09,736 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:06:09,737 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:06:09,989 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:06:09,995 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:06:09,995 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 09:06:09,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:06:09 BoogieIcfgContainer [2023-08-26 09:06:09,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:06:09,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:06:09,999 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:06:10,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:06:10,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:06:09" (1/3) ... [2023-08-26 09:06:10,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ae0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:06:10, skipping insertion in model container [2023-08-26 09:06:10,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:06:09" (2/3) ... [2023-08-26 09:06:10,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ae0cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:06:10, skipping insertion in model container [2023-08-26 09:06:10,006 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:06:09" (3/3) ... [2023-08-26 09:06:10,007 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2023-08-26 09:06:10,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:06:10,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-26 09:06:10,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:06:10,113 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 09:06:10,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 136 transitions, 288 flow [2023-08-26 09:06:10,233 INFO L124 PetriNetUnfolderBase]: 5/134 cut-off events. [2023-08-26 09:06:10,233 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:06:10,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 134 events. 5/134 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-26 09:06:10,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 136 transitions, 288 flow [2023-08-26 09:06:10,248 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 125 transitions, 262 flow [2023-08-26 09:06:10,251 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:06:10,265 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 125 transitions, 262 flow [2023-08-26 09:06:10,271 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 125 transitions, 262 flow [2023-08-26 09:06:10,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 125 transitions, 262 flow [2023-08-26 09:06:10,316 INFO L124 PetriNetUnfolderBase]: 5/125 cut-off events. [2023-08-26 09:06:10,317 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:06:10,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 125 events. 5/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2023-08-26 09:06:10,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 2900 [2023-08-26 09:06:13,081 INFO L134 LiptonReduction]: Checked pairs total: 6436 [2023-08-26 09:06:13,081 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-26 09:06:13,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:06:13,108 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;@5ece7674, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:06:13,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 09:06:13,109 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:06:13,110 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 09:06:13,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:06:13,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:13,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:06:13,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:13,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:13,115 INFO L85 PathProgramCache]: Analyzing trace with hash 501, now seen corresponding path program 1 times [2023-08-26 09:06:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169272595] [2023-08-26 09:06:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169272595] [2023-08-26 09:06:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169272595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:06:13,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:06:13,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:06:13,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146265881] [2023-08-26 09:06:13,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:06:13,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:06:13,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:13,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:06:13,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:06:13,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 265 [2023-08-26 09:06:13,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 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) [2023-08-26 09:06:13,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:13,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 265 [2023-08-26 09:06:13,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:13,269 INFO L124 PetriNetUnfolderBase]: 90/195 cut-off events. [2023-08-26 09:06:13,270 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-26 09:06:13,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 195 events. 90/195 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 826 event pairs, 50 based on Foata normal form. 47/197 useless extension candidates. Maximal degree in co-relation 296. Up to 148 conditions per place. [2023-08-26 09:06:13,272 INFO L140 encePairwiseOnDemand]: 253/265 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-26 09:06:13,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 94 flow [2023-08-26 09:06:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:06:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:06:13,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 284 transitions. [2023-08-26 09:06:13,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358490566037736 [2023-08-26 09:06:13,284 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 284 transitions. [2023-08-26 09:06:13,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 284 transitions. [2023-08-26 09:06:13,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:13,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 284 transitions. [2023-08-26 09:06:13,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 142.0) internal successors, (284), 2 states have internal predecessors, (284), 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) [2023-08-26 09:06:13,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2023-08-26 09:06:13,294 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 265.0) internal successors, (795), 3 states have internal predecessors, (795), 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) [2023-08-26 09:06:13,295 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 2 states and 284 transitions. [2023-08-26 09:06:13,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 94 flow [2023-08-26 09:06:13,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 86 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:06:13,298 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 54 flow [2023-08-26 09:06:13,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=54, PETRI_PLACES=27, PETRI_TRANSITIONS=25} [2023-08-26 09:06:13,303 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -13 predicate places. [2023-08-26 09:06:13,303 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 54 flow [2023-08-26 09:06:13,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.5) internal successors, (257), 2 states have internal predecessors, (257), 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) [2023-08-26 09:06:13,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:13,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 09:06:13,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:06:13,304 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:13,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:13,304 INFO L85 PathProgramCache]: Analyzing trace with hash 479687787, now seen corresponding path program 1 times [2023-08-26 09:06:13,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:13,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869549088] [2023-08-26 09:06:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:13,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:13,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:13,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869549088] [2023-08-26 09:06:13,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869549088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:06:13,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:06:13,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:06:13,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786938303] [2023-08-26 09:06:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:06:13,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:06:13,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:13,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:06:13,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:06:13,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 265 [2023-08-26 09:06:13,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2023-08-26 09:06:13,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:13,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 265 [2023-08-26 09:06:13,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:13,413 INFO L124 PetriNetUnfolderBase]: 112/229 cut-off events. [2023-08-26 09:06:13,413 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 09:06:13,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 229 events. 112/229 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 912 event pairs, 34 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 424. Up to 178 conditions per place. [2023-08-26 09:06:13,415 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 22 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-26 09:06:13,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 113 flow [2023-08-26 09:06:13,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:06:13,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:06:13,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-26 09:06:13,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817610062893082 [2023-08-26 09:06:13,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-26 09:06:13,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-26 09:06:13,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:13,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-26 09:06:13,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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) [2023-08-26 09:06:13,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-26 09:06:13,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-26 09:06:13,422 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 54 flow. Second operand 3 states and 383 transitions. [2023-08-26 09:06:13,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 113 flow [2023-08-26 09:06:13,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:06:13,423 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 64 flow [2023-08-26 09:06:13,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-08-26 09:06:13,424 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -12 predicate places. [2023-08-26 09:06:13,424 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 64 flow [2023-08-26 09:06:13,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 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) [2023-08-26 09:06:13,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:13,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:13,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 09:06:13,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:13,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:13,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1418591592, now seen corresponding path program 1 times [2023-08-26 09:06:13,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:13,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559442324] [2023-08-26 09:06:13,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:13,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:13,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:13,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:13,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559442324] [2023-08-26 09:06:13,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559442324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:06:13,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:06:13,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:06:13,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441115931] [2023-08-26 09:06:13,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:06:13,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:06:13,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:13,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:06:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:06:13,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 265 [2023-08-26 09:06:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2023-08-26 09:06:13,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:13,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 265 [2023-08-26 09:06:13,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:13,521 INFO L124 PetriNetUnfolderBase]: 155/275 cut-off events. [2023-08-26 09:06:13,521 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-26 09:06:13,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 275 events. 155/275 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1013 event pairs, 16 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 577. Up to 241 conditions per place. [2023-08-26 09:06:13,523 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 26 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-26 09:06:13,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 136 flow [2023-08-26 09:06:13,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:06:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:06:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-08-26 09:06:13,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48553459119496856 [2023-08-26 09:06:13,525 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-08-26 09:06:13,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-08-26 09:06:13,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:13,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-08-26 09:06:13,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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) [2023-08-26 09:06:13,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-26 09:06:13,529 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-26 09:06:13,529 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 64 flow. Second operand 3 states and 386 transitions. [2023-08-26 09:06:13,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 136 flow [2023-08-26 09:06:13,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:06:13,531 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 74 flow [2023-08-26 09:06:13,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-26 09:06:13,531 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2023-08-26 09:06:13,532 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 74 flow [2023-08-26 09:06:13,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2023-08-26 09:06:13,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:13,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:13,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 09:06:13,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:13,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:13,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1259350516, now seen corresponding path program 1 times [2023-08-26 09:06:13,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:13,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333829638] [2023-08-26 09:06:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:13,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:13,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:13,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333829638] [2023-08-26 09:06:13,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333829638] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:06:13,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:06:13,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 09:06:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425113739] [2023-08-26 09:06:13,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:06:13,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:06:13,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:13,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:06:13,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:06:13,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2023-08-26 09:06:13,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-26 09:06:13,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:13,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2023-08-26 09:06:13,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:13,927 INFO L124 PetriNetUnfolderBase]: 155/307 cut-off events. [2023-08-26 09:06:13,927 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-26 09:06:13,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 653 conditions, 307 events. 155/307 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1367 event pairs, 39 based on Foata normal form. 1/242 useless extension candidates. Maximal degree in co-relation 648. Up to 168 conditions per place. [2023-08-26 09:06:13,930 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 26 selfloop transitions, 3 changer transitions 1/38 dead transitions. [2023-08-26 09:06:13,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 165 flow [2023-08-26 09:06:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:06:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:06:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-26 09:06:13,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2023-08-26 09:06:13,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-26 09:06:13,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-26 09:06:13,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:13,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-26 09:06:13,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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) [2023-08-26 09:06:13,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-26 09:06:13,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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) [2023-08-26 09:06:13,935 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 74 flow. Second operand 3 states and 399 transitions. [2023-08-26 09:06:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 165 flow [2023-08-26 09:06:13,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 165 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:06:13,938 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 93 flow [2023-08-26 09:06:13,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-26 09:06:13,939 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -8 predicate places. [2023-08-26 09:06:13,940 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 93 flow [2023-08-26 09:06:13,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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) [2023-08-26 09:06:13,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:13,940 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:13,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 09:06:13,941 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:13,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:13,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1120298337, now seen corresponding path program 1 times [2023-08-26 09:06:13,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:13,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176231549] [2023-08-26 09:06:13,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:13,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:14,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:14,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:14,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176231549] [2023-08-26 09:06:14,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176231549] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:14,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159804225] [2023-08-26 09:06:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:14,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:14,237 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) [2023-08-26 09:06:14,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 09:06:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:14,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:06:14,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:14,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:14,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:14,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159804225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:14,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:14,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-08-26 09:06:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011433380] [2023-08-26 09:06:14,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:14,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:06:14,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:06:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:06:14,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-26 09:06:14,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 93 flow. Second operand has 11 states, 11 states have (on average 112.0909090909091) internal successors, (1233), 11 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:14,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:14,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-26 09:06:14,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:14,990 INFO L124 PetriNetUnfolderBase]: 201/410 cut-off events. [2023-08-26 09:06:14,990 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-26 09:06:14,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 410 events. 201/410 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1914 event pairs, 8 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 976. Up to 158 conditions per place. [2023-08-26 09:06:14,992 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 33 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2023-08-26 09:06:14,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 341 flow [2023-08-26 09:06:14,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:06:14,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:06:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 828 transitions. [2023-08-26 09:06:14,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463611859838275 [2023-08-26 09:06:14,995 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 828 transitions. [2023-08-26 09:06:14,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 828 transitions. [2023-08-26 09:06:14,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:14,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 828 transitions. [2023-08-26 09:06:14,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.28571428571429) internal successors, (828), 7 states have internal predecessors, (828), 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) [2023-08-26 09:06:15,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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) [2023-08-26 09:06:15,001 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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) [2023-08-26 09:06:15,002 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 93 flow. Second operand 7 states and 828 transitions. [2023-08-26 09:06:15,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 341 flow [2023-08-26 09:06:15,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:06:15,004 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 122 flow [2023-08-26 09:06:15,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=122, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2023-08-26 09:06:15,005 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-26 09:06:15,005 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 122 flow [2023-08-26 09:06:15,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 112.0909090909091) internal successors, (1233), 11 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:06:15,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:15,006 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:15,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:15,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:15,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:15,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash -921504487, now seen corresponding path program 1 times [2023-08-26 09:06:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:15,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154993913] [2023-08-26 09:06:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:15,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:15,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:15,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:15,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154993913] [2023-08-26 09:06:15,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154993913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867267576] [2023-08-26 09:06:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:15,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:15,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:15,421 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) [2023-08-26 09:06:15,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 09:06:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:15,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:06:15,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:15,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867267576] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:15,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:15,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-08-26 09:06:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955800969] [2023-08-26 09:06:15,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:15,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:06:15,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:15,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:06:15,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:06:15,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-26 09:06:15,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 122 flow. Second operand has 11 states, 11 states have (on average 111.9090909090909) internal successors, (1231), 11 states have internal predecessors, (1231), 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) [2023-08-26 09:06:15,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:15,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-26 09:06:15,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:15,987 INFO L124 PetriNetUnfolderBase]: 185/361 cut-off events. [2023-08-26 09:06:15,987 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-08-26 09:06:15,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 361 events. 185/361 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1519 event pairs, 14 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1001. Up to 172 conditions per place. [2023-08-26 09:06:15,990 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 35 selfloop transitions, 11 changer transitions 8/60 dead transitions. [2023-08-26 09:06:15,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 340 flow [2023-08-26 09:06:15,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 09:06:15,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 09:06:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2023-08-26 09:06:15,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393530997304582 [2023-08-26 09:06:15,992 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2023-08-26 09:06:15,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2023-08-26 09:06:15,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:15,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2023-08-26 09:06:15,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 116.42857142857143) internal successors, (815), 7 states have internal predecessors, (815), 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) [2023-08-26 09:06:15,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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) [2023-08-26 09:06:15,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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) [2023-08-26 09:06:15,997 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 122 flow. Second operand 7 states and 815 transitions. [2023-08-26 09:06:15,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 340 flow [2023-08-26 09:06:15,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 310 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-26 09:06:16,000 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 172 flow [2023-08-26 09:06:16,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=172, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-26 09:06:16,000 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-26 09:06:16,001 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 172 flow [2023-08-26 09:06:16,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 111.9090909090909) internal successors, (1231), 11 states have internal predecessors, (1231), 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) [2023-08-26 09:06:16,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:16,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:16,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:16,207 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,SelfDestructingSolverStorable5 [2023-08-26 09:06:16,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:16,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:16,208 INFO L85 PathProgramCache]: Analyzing trace with hash 283059937, now seen corresponding path program 2 times [2023-08-26 09:06:16,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:16,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680210185] [2023-08-26 09:06:16,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:16,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:16,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:16,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680210185] [2023-08-26 09:06:16,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680210185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:16,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306575279] [2023-08-26 09:06:16,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:06:16,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:16,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:16,390 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) [2023-08-26 09:06:16,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 09:06:16,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:06:16,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:16,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-26 09:06:16,470 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:16,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:16,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306575279] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:16,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:16,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 15 [2023-08-26 09:06:16,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970304404] [2023-08-26 09:06:16,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:16,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:06:16,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:06:16,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:06:16,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:06:16,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 172 flow. Second operand has 17 states, 17 states have (on average 109.29411764705883) internal successors, (1858), 17 states have internal predecessors, (1858), 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) [2023-08-26 09:06:16,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:16,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:06:16,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:17,330 INFO L124 PetriNetUnfolderBase]: 319/620 cut-off events. [2023-08-26 09:06:17,331 INFO L125 PetriNetUnfolderBase]: For 312/316 co-relation queries the response was YES. [2023-08-26 09:06:17,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 620 events. 319/620 cut-off events. For 312/316 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2954 event pairs, 20 based on Foata normal form. 6/616 useless extension candidates. Maximal degree in co-relation 1689. Up to 144 conditions per place. [2023-08-26 09:06:17,335 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 63 selfloop transitions, 35 changer transitions 12/116 dead transitions. [2023-08-26 09:06:17,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 647 flow [2023-08-26 09:06:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:06:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:06:17,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1604 transitions. [2023-08-26 09:06:17,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323450134770889 [2023-08-26 09:06:17,339 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1604 transitions. [2023-08-26 09:06:17,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1604 transitions. [2023-08-26 09:06:17,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:17,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1604 transitions. [2023-08-26 09:06:17,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 114.57142857142857) internal successors, (1604), 14 states have internal predecessors, (1604), 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) [2023-08-26 09:06:17,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 265.0) internal successors, (3975), 15 states have internal predecessors, (3975), 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) [2023-08-26 09:06:17,348 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 265.0) internal successors, (3975), 15 states have internal predecessors, (3975), 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) [2023-08-26 09:06:17,348 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 172 flow. Second operand 14 states and 1604 transitions. [2023-08-26 09:06:17,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 647 flow [2023-08-26 09:06:17,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 643 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 09:06:17,352 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 413 flow [2023-08-26 09:06:17,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=413, PETRI_PLACES=63, PETRI_TRANSITIONS=59} [2023-08-26 09:06:17,352 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2023-08-26 09:06:17,352 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 413 flow [2023-08-26 09:06:17,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 109.29411764705883) internal successors, (1858), 17 states have internal predecessors, (1858), 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) [2023-08-26 09:06:17,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:17,353 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:17,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:17,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:17,559 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:17,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash -122515463, now seen corresponding path program 3 times [2023-08-26 09:06:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:17,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037617098] [2023-08-26 09:06:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:17,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:17,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:17,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037617098] [2023-08-26 09:06:17,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037617098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:17,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863071380] [2023-08-26 09:06:17,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:06:17,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:17,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:17,857 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) [2023-08-26 09:06:17,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:06:17,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:06:17,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:17,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 09:06:17,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:18,070 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:18,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863071380] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:18,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:18,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2023-08-26 09:06:18,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383549347] [2023-08-26 09:06:18,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:18,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:06:18,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:18,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:06:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:06:18,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-26 09:06:18,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 59 transitions, 413 flow. Second operand has 13 states, 13 states have (on average 111.76923076923077) internal successors, (1453), 13 states have internal predecessors, (1453), 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) [2023-08-26 09:06:18,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:18,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-26 09:06:18,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:18,578 INFO L124 PetriNetUnfolderBase]: 542/1093 cut-off events. [2023-08-26 09:06:18,579 INFO L125 PetriNetUnfolderBase]: For 2664/2672 co-relation queries the response was YES. [2023-08-26 09:06:18,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3943 conditions, 1093 events. 542/1093 cut-off events. For 2664/2672 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6086 event pairs, 48 based on Foata normal form. 11/1088 useless extension candidates. Maximal degree in co-relation 3923. Up to 203 conditions per place. [2023-08-26 09:06:18,588 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 93 selfloop transitions, 49 changer transitions 14/162 dead transitions. [2023-08-26 09:06:18,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 162 transitions, 1273 flow [2023-08-26 09:06:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 09:06:18,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 09:06:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1421 transitions. [2023-08-26 09:06:18,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468553459119497 [2023-08-26 09:06:18,592 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1421 transitions. [2023-08-26 09:06:18,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1421 transitions. [2023-08-26 09:06:18,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:18,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1421 transitions. [2023-08-26 09:06:18,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.41666666666667) internal successors, (1421), 12 states have internal predecessors, (1421), 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) [2023-08-26 09:06:18,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 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) [2023-08-26 09:06:18,601 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 265.0) internal successors, (3445), 13 states have internal predecessors, (3445), 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) [2023-08-26 09:06:18,601 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 413 flow. Second operand 12 states and 1421 transitions. [2023-08-26 09:06:18,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 162 transitions, 1273 flow [2023-08-26 09:06:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 162 transitions, 1162 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-08-26 09:06:18,610 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 740 flow [2023-08-26 09:06:18,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=740, PETRI_PLACES=77, PETRI_TRANSITIONS=92} [2023-08-26 09:06:18,610 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 37 predicate places. [2023-08-26 09:06:18,610 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 740 flow [2023-08-26 09:06:18,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 111.76923076923077) internal successors, (1453), 13 states have internal predecessors, (1453), 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) [2023-08-26 09:06:18,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:18,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:18,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-26 09:06:18,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:18,817 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:18,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:18,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2146854201, now seen corresponding path program 2 times [2023-08-26 09:06:18,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:18,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258726694] [2023-08-26 09:06:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:18,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:18,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258726694] [2023-08-26 09:06:18,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258726694] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:18,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618945065] [2023-08-26 09:06:18,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:06:18,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:18,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:18,993 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) [2023-08-26 09:06:19,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:06:19,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:06:19,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:19,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-26 09:06:19,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:19,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:19,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:19,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:19,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618945065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:19,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:19,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-26 09:06:19,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529184358] [2023-08-26 09:06:19,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:19,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 09:06:19,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:19,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 09:06:19,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-08-26 09:06:19,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2023-08-26 09:06:19,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 92 transitions, 740 flow. Second operand has 10 states, 10 states have (on average 118.3) internal successors, (1183), 10 states have internal predecessors, (1183), 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) [2023-08-26 09:06:19,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:19,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2023-08-26 09:06:19,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:19,614 INFO L124 PetriNetUnfolderBase]: 646/1267 cut-off events. [2023-08-26 09:06:19,614 INFO L125 PetriNetUnfolderBase]: For 5376/5393 co-relation queries the response was YES. [2023-08-26 09:06:19,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 1267 events. 646/1267 cut-off events. For 5376/5393 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7289 event pairs, 96 based on Foata normal form. 10/1248 useless extension candidates. Maximal degree in co-relation 5072. Up to 591 conditions per place. [2023-08-26 09:06:19,626 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 81 selfloop transitions, 50 changer transitions 4/146 dead transitions. [2023-08-26 09:06:19,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 146 transitions, 1375 flow [2023-08-26 09:06:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-26 09:06:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-26 09:06:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 989 transitions. [2023-08-26 09:06:19,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46650943396226413 [2023-08-26 09:06:19,629 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 989 transitions. [2023-08-26 09:06:19,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 989 transitions. [2023-08-26 09:06:19,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:19,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 989 transitions. [2023-08-26 09:06:19,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.625) internal successors, (989), 8 states have internal predecessors, (989), 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) [2023-08-26 09:06:19,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 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) [2023-08-26 09:06:19,636 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 265.0) internal successors, (2385), 9 states have internal predecessors, (2385), 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) [2023-08-26 09:06:19,636 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 740 flow. Second operand 8 states and 989 transitions. [2023-08-26 09:06:19,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 146 transitions, 1375 flow [2023-08-26 09:06:19,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 146 transitions, 1346 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-26 09:06:19,654 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 1063 flow [2023-08-26 09:06:19,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1063, PETRI_PLACES=87, PETRI_TRANSITIONS=108} [2023-08-26 09:06:19,654 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2023-08-26 09:06:19,655 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 1063 flow [2023-08-26 09:06:19,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 118.3) internal successors, (1183), 10 states have internal predecessors, (1183), 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) [2023-08-26 09:06:19,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:19,655 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:19,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:19,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:19,866 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:19,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash 252474887, now seen corresponding path program 3 times [2023-08-26 09:06:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:19,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932182500] [2023-08-26 09:06:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:19,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:20,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932182500] [2023-08-26 09:06:20,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932182500] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:20,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004705422] [2023-08-26 09:06:20,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:06:20,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:20,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:20,078 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:20,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:06:20,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:06:20,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:20,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-26 09:06:20,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:20,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004705422] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:20,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:20,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-26 09:06:20,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004538430] [2023-08-26 09:06:20,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:20,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:06:20,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:20,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:06:20,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:06:20,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2023-08-26 09:06:20,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 108 transitions, 1063 flow. Second operand has 11 states, 11 states have (on average 118.0909090909091) internal successors, (1299), 11 states have internal predecessors, (1299), 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) [2023-08-26 09:06:20,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:20,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2023-08-26 09:06:20,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:20,745 INFO L124 PetriNetUnfolderBase]: 860/1679 cut-off events. [2023-08-26 09:06:20,745 INFO L125 PetriNetUnfolderBase]: For 10148/10174 co-relation queries the response was YES. [2023-08-26 09:06:20,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7431 conditions, 1679 events. 860/1679 cut-off events. For 10148/10174 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10508 event pairs, 134 based on Foata normal form. 15/1641 useless extension candidates. Maximal degree in co-relation 7403. Up to 561 conditions per place. [2023-08-26 09:06:20,806 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 110 selfloop transitions, 71 changer transitions 8/200 dead transitions. [2023-08-26 09:06:20,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 200 transitions, 2167 flow [2023-08-26 09:06:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:06:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:06:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1366 transitions. [2023-08-26 09:06:20,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686106346483705 [2023-08-26 09:06:20,811 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1366 transitions. [2023-08-26 09:06:20,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1366 transitions. [2023-08-26 09:06:20,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:20,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1366 transitions. [2023-08-26 09:06:20,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 124.18181818181819) internal successors, (1366), 11 states have internal predecessors, (1366), 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) [2023-08-26 09:06:20,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 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) [2023-08-26 09:06:20,820 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 265.0) internal successors, (3180), 12 states have internal predecessors, (3180), 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) [2023-08-26 09:06:20,820 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 1063 flow. Second operand 11 states and 1366 transitions. [2023-08-26 09:06:20,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 200 transitions, 2167 flow [2023-08-26 09:06:20,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 200 transitions, 2117 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-26 09:06:20,857 INFO L231 Difference]: Finished difference. Result has 101 places, 134 transitions, 1599 flow [2023-08-26 09:06:20,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1599, PETRI_PLACES=101, PETRI_TRANSITIONS=134} [2023-08-26 09:06:20,858 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2023-08-26 09:06:20,858 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 134 transitions, 1599 flow [2023-08-26 09:06:20,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.0909090909091) internal successors, (1299), 11 states have internal predecessors, (1299), 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) [2023-08-26 09:06:20,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:20,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:20,872 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:21,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:21,065 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:21,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 323923132, now seen corresponding path program 1 times [2023-08-26 09:06:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:21,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445916530] [2023-08-26 09:06:21,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:21,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:21,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445916530] [2023-08-26 09:06:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445916530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879201550] [2023-08-26 09:06:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:21,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:21,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:21,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:06:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:21,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:06:21,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:22,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:25,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879201550] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:25,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:25,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-26 09:06:25,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171406675] [2023-08-26 09:06:25,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:25,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:06:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:25,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:06:25,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:06:25,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:06:25,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 134 transitions, 1599 flow. Second operand has 24 states, 24 states have (on average 108.875) internal successors, (2613), 24 states have internal predecessors, (2613), 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) [2023-08-26 09:06:25,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:25,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:06:25,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:29,032 INFO L124 PetriNetUnfolderBase]: 983/2013 cut-off events. [2023-08-26 09:06:29,032 INFO L125 PetriNetUnfolderBase]: For 15958/15962 co-relation queries the response was YES. [2023-08-26 09:06:29,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9539 conditions, 2013 events. 983/2013 cut-off events. For 15958/15962 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13354 event pairs, 94 based on Foata normal form. 7/1984 useless extension candidates. Maximal degree in co-relation 9505. Up to 598 conditions per place. [2023-08-26 09:06:29,088 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 136 selfloop transitions, 155 changer transitions 28/325 dead transitions. [2023-08-26 09:06:29,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 325 transitions, 3561 flow [2023-08-26 09:06:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-26 09:06:29,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-26 09:06:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3862 transitions. [2023-08-26 09:06:29,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4286348501664817 [2023-08-26 09:06:29,102 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3862 transitions. [2023-08-26 09:06:29,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3862 transitions. [2023-08-26 09:06:29,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:29,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3862 transitions. [2023-08-26 09:06:29,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 113.58823529411765) internal successors, (3862), 34 states have internal predecessors, (3862), 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) [2023-08-26 09:06:29,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:06:29,140 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:06:29,140 INFO L175 Difference]: Start difference. First operand has 101 places, 134 transitions, 1599 flow. Second operand 34 states and 3862 transitions. [2023-08-26 09:06:29,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 325 transitions, 3561 flow [2023-08-26 09:06:29,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 325 transitions, 3510 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-26 09:06:29,180 INFO L231 Difference]: Finished difference. Result has 139 places, 201 transitions, 2840 flow [2023-08-26 09:06:29,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2840, PETRI_PLACES=139, PETRI_TRANSITIONS=201} [2023-08-26 09:06:29,181 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2023-08-26 09:06:29,181 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 201 transitions, 2840 flow [2023-08-26 09:06:29,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 108.875) internal successors, (2613), 24 states have internal predecessors, (2613), 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) [2023-08-26 09:06:29,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:29,182 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:29,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:29,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:29,388 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:29,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:29,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1984589386, now seen corresponding path program 4 times [2023-08-26 09:06:29,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:29,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202715450] [2023-08-26 09:06:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:29,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:29,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:29,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202715450] [2023-08-26 09:06:29,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202715450] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:29,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468938175] [2023-08-26 09:06:29,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:06:29,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:29,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:29,696 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:29,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:06:29,786 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:06:29,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:29,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 09:06:29,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:29,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468938175] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:32,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:32,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2023-08-26 09:06:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033601135] [2023-08-26 09:06:32,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:06:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:32,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:06:32,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=148, Unknown=1, NotChecked=0, Total=210 [2023-08-26 09:06:32,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-26 09:06:32,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 201 transitions, 2840 flow. Second operand has 15 states, 15 states have (on average 111.93333333333334) internal successors, (1679), 15 states have internal predecessors, (1679), 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) [2023-08-26 09:06:32,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:32,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-26 09:06:32,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:33,299 INFO L124 PetriNetUnfolderBase]: 931/1932 cut-off events. [2023-08-26 09:06:33,299 INFO L125 PetriNetUnfolderBase]: For 22410/22418 co-relation queries the response was YES. [2023-08-26 09:06:33,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10482 conditions, 1932 events. 931/1932 cut-off events. For 22410/22418 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12803 event pairs, 112 based on Foata normal form. 7/1899 useless extension candidates. Maximal degree in co-relation 10441. Up to 836 conditions per place. [2023-08-26 09:06:33,321 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 139 selfloop transitions, 83 changer transitions 32/260 dead transitions. [2023-08-26 09:06:33,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 260 transitions, 3743 flow [2023-08-26 09:06:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:06:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:06:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1516 transitions. [2023-08-26 09:06:33,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44005805515239477 [2023-08-26 09:06:33,325 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1516 transitions. [2023-08-26 09:06:33,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1516 transitions. [2023-08-26 09:06:33,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:33,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1516 transitions. [2023-08-26 09:06:33,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.61538461538461) internal successors, (1516), 13 states have internal predecessors, (1516), 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) [2023-08-26 09:06:33,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 265.0) internal successors, (3710), 14 states have internal predecessors, (3710), 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) [2023-08-26 09:06:33,332 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 265.0) internal successors, (3710), 14 states have internal predecessors, (3710), 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) [2023-08-26 09:06:33,333 INFO L175 Difference]: Start difference. First operand has 139 places, 201 transitions, 2840 flow. Second operand 13 states and 1516 transitions. [2023-08-26 09:06:33,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 260 transitions, 3743 flow [2023-08-26 09:06:33,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 260 transitions, 3571 flow, removed 67 selfloop flow, removed 10 redundant places. [2023-08-26 09:06:33,392 INFO L231 Difference]: Finished difference. Result has 141 places, 198 transitions, 2812 flow [2023-08-26 09:06:33,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2670, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2812, PETRI_PLACES=141, PETRI_TRANSITIONS=198} [2023-08-26 09:06:33,393 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2023-08-26 09:06:33,393 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 198 transitions, 2812 flow [2023-08-26 09:06:33,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 111.93333333333334) internal successors, (1679), 15 states have internal predecessors, (1679), 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) [2023-08-26 09:06:33,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:33,394 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:33,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:33,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 09:06:33,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:33,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash 596589858, now seen corresponding path program 2 times [2023-08-26 09:06:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201785126] [2023-08-26 09:06:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:33,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:34,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201785126] [2023-08-26 09:06:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201785126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:34,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137939653] [2023-08-26 09:06:34,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:06:34,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:34,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:34,253 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:34,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:06:34,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:06:34,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:34,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:06:34,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:34,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:34,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:37,752 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:37,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137939653] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:37,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:37,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:06:37,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137184930] [2023-08-26 09:06:37,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:37,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:06:37,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:37,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:06:37,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:06:37,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:06:37,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 198 transitions, 2812 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:06:37,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:37,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:06:37,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:40,171 INFO L124 PetriNetUnfolderBase]: 1205/2411 cut-off events. [2023-08-26 09:06:40,171 INFO L125 PetriNetUnfolderBase]: For 28766/28774 co-relation queries the response was YES. [2023-08-26 09:06:40,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13167 conditions, 2411 events. 1205/2411 cut-off events. For 28766/28774 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16245 event pairs, 131 based on Foata normal form. 10/2372 useless extension candidates. Maximal degree in co-relation 13127. Up to 967 conditions per place. [2023-08-26 09:06:40,199 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 141 selfloop transitions, 174 changer transitions 10/331 dead transitions. [2023-08-26 09:06:40,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 331 transitions, 4733 flow [2023-08-26 09:06:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:06:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:06:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2494 transitions. [2023-08-26 09:06:40,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42778730703259005 [2023-08-26 09:06:40,203 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2494 transitions. [2023-08-26 09:06:40,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2494 transitions. [2023-08-26 09:06:40,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:40,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2494 transitions. [2023-08-26 09:06:40,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 113.36363636363636) internal successors, (2494), 22 states have internal predecessors, (2494), 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) [2023-08-26 09:06:40,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 265.0) internal successors, (6095), 23 states have internal predecessors, (6095), 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) [2023-08-26 09:06:40,215 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 265.0) internal successors, (6095), 23 states have internal predecessors, (6095), 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) [2023-08-26 09:06:40,215 INFO L175 Difference]: Start difference. First operand has 141 places, 198 transitions, 2812 flow. Second operand 22 states and 2494 transitions. [2023-08-26 09:06:40,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 331 transitions, 4733 flow [2023-08-26 09:06:40,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 331 transitions, 4572 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-26 09:06:40,292 INFO L231 Difference]: Finished difference. Result has 155 places, 257 transitions, 4265 flow [2023-08-26 09:06:40,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4265, PETRI_PLACES=155, PETRI_TRANSITIONS=257} [2023-08-26 09:06:40,293 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 115 predicate places. [2023-08-26 09:06:40,293 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 257 transitions, 4265 flow [2023-08-26 09:06:40,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:06:40,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:40,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:40,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:40,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 09:06:40,500 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:40,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:40,501 INFO L85 PathProgramCache]: Analyzing trace with hash 923655842, now seen corresponding path program 3 times [2023-08-26 09:06:40,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:40,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779126769] [2023-08-26 09:06:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:40,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:41,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779126769] [2023-08-26 09:06:41,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779126769] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:41,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033962482] [2023-08-26 09:06:41,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:06:41,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:41,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:41,150 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:41,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 09:06:41,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:06:41,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:41,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:06:41,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:41,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:45,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:45,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033962482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:45,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:45,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:06:45,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440456946] [2023-08-26 09:06:45,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:45,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:06:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:06:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:06:45,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:06:45,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 257 transitions, 4265 flow. Second operand has 23 states, 23 states have (on average 108.8695652173913) internal successors, (2504), 23 states have internal predecessors, (2504), 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) [2023-08-26 09:06:45,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:45,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:06:45,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:06:49,638 INFO L124 PetriNetUnfolderBase]: 1224/2496 cut-off events. [2023-08-26 09:06:49,639 INFO L125 PetriNetUnfolderBase]: For 41014/41014 co-relation queries the response was YES. [2023-08-26 09:06:49,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15126 conditions, 2496 events. 1224/2496 cut-off events. For 41014/41014 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17163 event pairs, 117 based on Foata normal form. 4/2451 useless extension candidates. Maximal degree in co-relation 15082. Up to 768 conditions per place. [2023-08-26 09:06:49,664 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 168 selfloop transitions, 184 changer transitions 15/373 dead transitions. [2023-08-26 09:06:49,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 373 transitions, 5592 flow [2023-08-26 09:06:49,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 09:06:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 09:06:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3511 transitions. [2023-08-26 09:06:49,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273889227023737 [2023-08-26 09:06:49,670 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3511 transitions. [2023-08-26 09:06:49,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3511 transitions. [2023-08-26 09:06:49,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:06:49,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3511 transitions. [2023-08-26 09:06:49,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 113.25806451612904) internal successors, (3511), 31 states have internal predecessors, (3511), 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) [2023-08-26 09:06:49,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 265.0) internal successors, (8480), 32 states have internal predecessors, (8480), 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) [2023-08-26 09:06:49,685 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 265.0) internal successors, (8480), 32 states have internal predecessors, (8480), 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) [2023-08-26 09:06:49,685 INFO L175 Difference]: Start difference. First operand has 155 places, 257 transitions, 4265 flow. Second operand 31 states and 3511 transitions. [2023-08-26 09:06:49,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 373 transitions, 5592 flow [2023-08-26 09:06:49,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 373 transitions, 5542 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-26 09:06:49,790 INFO L231 Difference]: Finished difference. Result has 186 places, 265 transitions, 4814 flow [2023-08-26 09:06:49,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=4814, PETRI_PLACES=186, PETRI_TRANSITIONS=265} [2023-08-26 09:06:49,790 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 146 predicate places. [2023-08-26 09:06:49,791 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 265 transitions, 4814 flow [2023-08-26 09:06:49,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.8695652173913) internal successors, (2504), 23 states have internal predecessors, (2504), 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) [2023-08-26 09:06:49,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:06:49,791 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:06:49,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 09:06:49,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 09:06:49,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:06:49,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:06:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1035464862, now seen corresponding path program 4 times [2023-08-26 09:06:49,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:06:49,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184063867] [2023-08-26 09:06:49,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:06:49,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:06:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:06:50,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:50,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:06:50,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184063867] [2023-08-26 09:06:50,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184063867] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:06:50,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105629814] [2023-08-26 09:06:50,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:06:50,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:06:50,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:06:50,613 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:06:50,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 09:06:50,709 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:06:50,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:06:50,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:06:50,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:06:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:51,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:06:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:06:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105629814] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:06:58,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:06:58,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:06:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134117943] [2023-08-26 09:06:58,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:06:58,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:06:58,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:06:58,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:06:58,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:06:58,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:06:58,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 265 transitions, 4814 flow. Second operand has 23 states, 23 states have (on average 108.82608695652173) internal successors, (2503), 23 states have internal predecessors, (2503), 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) [2023-08-26 09:06:58,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:06:58,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:06:58,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:01,449 INFO L124 PetriNetUnfolderBase]: 1358/2729 cut-off events. [2023-08-26 09:07:01,449 INFO L125 PetriNetUnfolderBase]: For 57045/57057 co-relation queries the response was YES. [2023-08-26 09:07:01,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17927 conditions, 2729 events. 1358/2729 cut-off events. For 57045/57057 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19040 event pairs, 143 based on Foata normal form. 14/2688 useless extension candidates. Maximal degree in co-relation 17877. Up to 1034 conditions per place. [2023-08-26 09:07:01,474 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 155 selfloop transitions, 209 changer transitions 10/380 dead transitions. [2023-08-26 09:07:01,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 380 transitions, 6576 flow [2023-08-26 09:07:01,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 09:07:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 09:07:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2839 transitions. [2023-08-26 09:07:01,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285283018867925 [2023-08-26 09:07:01,478 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2839 transitions. [2023-08-26 09:07:01,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2839 transitions. [2023-08-26 09:07:01,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:01,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2839 transitions. [2023-08-26 09:07:01,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 113.56) internal successors, (2839), 25 states have internal predecessors, (2839), 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) [2023-08-26 09:07:01,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 265.0) internal successors, (6890), 26 states have internal predecessors, (6890), 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) [2023-08-26 09:07:01,489 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 265.0) internal successors, (6890), 26 states have internal predecessors, (6890), 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) [2023-08-26 09:07:01,489 INFO L175 Difference]: Start difference. First operand has 186 places, 265 transitions, 4814 flow. Second operand 25 states and 2839 transitions. [2023-08-26 09:07:01,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 380 transitions, 6576 flow [2023-08-26 09:07:01,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 380 transitions, 6406 flow, removed 8 selfloop flow, removed 20 redundant places. [2023-08-26 09:07:01,657 INFO L231 Difference]: Finished difference. Result has 198 places, 294 transitions, 6071 flow [2023-08-26 09:07:01,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=4647, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=6071, PETRI_PLACES=198, PETRI_TRANSITIONS=294} [2023-08-26 09:07:01,658 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2023-08-26 09:07:01,658 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 294 transitions, 6071 flow [2023-08-26 09:07:01,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.82608695652173) internal successors, (2503), 23 states have internal predecessors, (2503), 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) [2023-08-26 09:07:01,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:01,659 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:01,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:01,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 09:07:01,864 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:07:01,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:01,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1399330138, now seen corresponding path program 5 times [2023-08-26 09:07:01,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:01,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984899888] [2023-08-26 09:07:01,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:01,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:02,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:02,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984899888] [2023-08-26 09:07:02,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984899888] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:02,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441983576] [2023-08-26 09:07:02,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:07:02,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:02,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:02,608 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:02,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 09:07:02,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:07:02,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:02,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:07:02,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:03,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:06,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441983576] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:06,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:06,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-26 09:07:06,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871645122] [2023-08-26 09:07:06,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:06,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:07:06,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:06,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:07:06,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:07:06,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:07:06,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 294 transitions, 6071 flow. Second operand has 24 states, 24 states have (on average 108.79166666666667) internal successors, (2611), 24 states have internal predecessors, (2611), 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) [2023-08-26 09:07:06,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:06,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:07:06,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:11,220 INFO L124 PetriNetUnfolderBase]: 1523/3106 cut-off events. [2023-08-26 09:07:11,220 INFO L125 PetriNetUnfolderBase]: For 85134/85149 co-relation queries the response was YES. [2023-08-26 09:07:11,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22426 conditions, 3106 events. 1523/3106 cut-off events. For 85134/85149 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 22460 event pairs, 144 based on Foata normal form. 17/3060 useless extension candidates. Maximal degree in co-relation 22369. Up to 643 conditions per place. [2023-08-26 09:07:11,250 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 162 selfloop transitions, 286 changer transitions 17/471 dead transitions. [2023-08-26 09:07:11,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 471 transitions, 8986 flow [2023-08-26 09:07:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-26 09:07:11,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-26 09:07:11,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4302 transitions. [2023-08-26 09:07:11,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42720953326713007 [2023-08-26 09:07:11,256 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4302 transitions. [2023-08-26 09:07:11,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4302 transitions. [2023-08-26 09:07:11,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:11,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4302 transitions. [2023-08-26 09:07:11,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 113.21052631578948) internal successors, (4302), 38 states have internal predecessors, (4302), 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) [2023-08-26 09:07:11,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 265.0) internal successors, (10335), 39 states have internal predecessors, (10335), 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) [2023-08-26 09:07:11,271 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 265.0) internal successors, (10335), 39 states have internal predecessors, (10335), 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) [2023-08-26 09:07:11,271 INFO L175 Difference]: Start difference. First operand has 198 places, 294 transitions, 6071 flow. Second operand 38 states and 4302 transitions. [2023-08-26 09:07:11,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 471 transitions, 8986 flow [2023-08-26 09:07:11,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 471 transitions, 8835 flow, removed 60 selfloop flow, removed 8 redundant places. [2023-08-26 09:07:11,547 INFO L231 Difference]: Finished difference. Result has 235 places, 351 transitions, 8202 flow [2023-08-26 09:07:11,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=5958, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8202, PETRI_PLACES=235, PETRI_TRANSITIONS=351} [2023-08-26 09:07:11,548 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2023-08-26 09:07:11,548 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 351 transitions, 8202 flow [2023-08-26 09:07:11,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 108.79166666666667) internal successors, (2611), 24 states have internal predecessors, (2611), 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) [2023-08-26 09:07:11,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:11,549 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:11,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:11,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 09:07:11,755 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:07:11,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:11,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1638883002, now seen corresponding path program 6 times [2023-08-26 09:07:11,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:11,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968286526] [2023-08-26 09:07:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:11,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:12,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:12,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968286526] [2023-08-26 09:07:12,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968286526] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:12,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285396883] [2023-08-26 09:07:12,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:07:12,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:12,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:12,369 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:12,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 09:07:12,454 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:07:12,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:12,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:07:12,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:12,774 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:14,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285396883] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:14,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-26 09:07:14,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24638568] [2023-08-26 09:07:14,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:14,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-26 09:07:14,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:14,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-26 09:07:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-08-26 09:07:15,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:07:15,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 351 transitions, 8202 flow. Second operand has 24 states, 24 states have (on average 108.875) internal successors, (2613), 24 states have internal predecessors, (2613), 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) [2023-08-26 09:07:15,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:15,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:07:15,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:19,984 INFO L124 PetriNetUnfolderBase]: 1634/3315 cut-off events. [2023-08-26 09:07:19,985 INFO L125 PetriNetUnfolderBase]: For 118055/118055 co-relation queries the response was YES. [2023-08-26 09:07:20,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26437 conditions, 3315 events. 1634/3315 cut-off events. For 118055/118055 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 23953 event pairs, 170 based on Foata normal form. 3/3251 useless extension candidates. Maximal degree in co-relation 26372. Up to 886 conditions per place. [2023-08-26 09:07:20,020 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 167 selfloop transitions, 311 changer transitions 15/499 dead transitions. [2023-08-26 09:07:20,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 499 transitions, 10731 flow [2023-08-26 09:07:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-26 09:07:20,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-26 09:07:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4637 transitions. [2023-08-26 09:07:20,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267832489645651 [2023-08-26 09:07:20,033 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4637 transitions. [2023-08-26 09:07:20,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4637 transitions. [2023-08-26 09:07:20,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:20,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4637 transitions. [2023-08-26 09:07:20,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 113.09756097560975) internal successors, (4637), 41 states have internal predecessors, (4637), 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) [2023-08-26 09:07:20,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 265.0) internal successors, (11130), 42 states have internal predecessors, (11130), 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) [2023-08-26 09:07:20,057 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 265.0) internal successors, (11130), 42 states have internal predecessors, (11130), 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) [2023-08-26 09:07:20,057 INFO L175 Difference]: Start difference. First operand has 235 places, 351 transitions, 8202 flow. Second operand 41 states and 4637 transitions. [2023-08-26 09:07:20,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 499 transitions, 10731 flow [2023-08-26 09:07:20,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 499 transitions, 10099 flow, removed 268 selfloop flow, removed 13 redundant places. [2023-08-26 09:07:20,510 INFO L231 Difference]: Finished difference. Result has 264 places, 377 transitions, 9354 flow [2023-08-26 09:07:20,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=7821, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=286, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=9354, PETRI_PLACES=264, PETRI_TRANSITIONS=377} [2023-08-26 09:07:20,510 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2023-08-26 09:07:20,510 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 377 transitions, 9354 flow [2023-08-26 09:07:20,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 108.875) internal successors, (2613), 24 states have internal predecessors, (2613), 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) [2023-08-26 09:07:20,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:20,511 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:20,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-26 09:07:20,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 09:07:20,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:07:20,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash -76287440, now seen corresponding path program 7 times [2023-08-26 09:07:20,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:20,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941713420] [2023-08-26 09:07:20,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:20,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:21,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:21,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:21,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941713420] [2023-08-26 09:07:21,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941713420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:21,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678809312] [2023-08-26 09:07:21,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:07:21,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:21,373 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:21,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 09:07:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:21,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:07:21,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:21,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:27,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678809312] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:27,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:27,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:07:27,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464213615] [2023-08-26 09:07:27,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:07:27,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:07:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:07:27,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:07:27,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 377 transitions, 9354 flow. Second operand has 23 states, 23 states have (on average 108.82608695652173) internal successors, (2503), 23 states have internal predecessors, (2503), 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) [2023-08-26 09:07:27,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:27,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:07:27,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:32,053 INFO L124 PetriNetUnfolderBase]: 1831/3671 cut-off events. [2023-08-26 09:07:32,054 INFO L125 PetriNetUnfolderBase]: For 128143/128143 co-relation queries the response was YES. [2023-08-26 09:07:32,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29807 conditions, 3671 events. 1831/3671 cut-off events. For 128143/128143 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 26901 event pairs, 221 based on Foata normal form. 2/3586 useless extension candidates. Maximal degree in co-relation 29739. Up to 1143 conditions per place. [2023-08-26 09:07:32,088 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 178 selfloop transitions, 321 changer transitions 10/515 dead transitions. [2023-08-26 09:07:32,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 515 transitions, 12242 flow [2023-08-26 09:07:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:07:32,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:07:32,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3068 transitions. [2023-08-26 09:07:32,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4287910552061495 [2023-08-26 09:07:32,092 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3068 transitions. [2023-08-26 09:07:32,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3068 transitions. [2023-08-26 09:07:32,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:32,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3068 transitions. [2023-08-26 09:07:32,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 113.62962962962963) internal successors, (3068), 27 states have internal predecessors, (3068), 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) [2023-08-26 09:07:32,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 265.0) internal successors, (7420), 28 states have internal predecessors, (7420), 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) [2023-08-26 09:07:32,101 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 265.0) internal successors, (7420), 28 states have internal predecessors, (7420), 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) [2023-08-26 09:07:32,101 INFO L175 Difference]: Start difference. First operand has 264 places, 377 transitions, 9354 flow. Second operand 27 states and 3068 transitions. [2023-08-26 09:07:32,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 515 transitions, 12242 flow [2023-08-26 09:07:32,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 515 transitions, 11833 flow, removed 115 selfloop flow, removed 26 redundant places. [2023-08-26 09:07:32,472 INFO L231 Difference]: Finished difference. Result has 272 places, 430 transitions, 11430 flow [2023-08-26 09:07:32,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=9016, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=11430, PETRI_PLACES=272, PETRI_TRANSITIONS=430} [2023-08-26 09:07:32,473 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 232 predicate places. [2023-08-26 09:07:32,473 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 430 transitions, 11430 flow [2023-08-26 09:07:32,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.82608695652173) internal successors, (2503), 23 states have internal predecessors, (2503), 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) [2023-08-26 09:07:32,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:32,473 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:32,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 09:07:32,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:32,674 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:07:32,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash -2104455970, now seen corresponding path program 8 times [2023-08-26 09:07:32,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:32,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722308007] [2023-08-26 09:07:32,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:32,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:33,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:33,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722308007] [2023-08-26 09:07:33,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722308007] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:33,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28638956] [2023-08-26 09:07:33,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:07:33,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:33,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:33,389 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:33,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 09:07:33,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:07:33,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:33,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:07:33,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:33,787 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28638956] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:37,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:07:37,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959546589] [2023-08-26 09:07:37,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:37,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:07:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:37,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:07:37,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:07:37,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:07:37,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 430 transitions, 11430 flow. Second operand has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:07:37,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:37,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:07:37,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:42,949 INFO L124 PetriNetUnfolderBase]: 1909/3832 cut-off events. [2023-08-26 09:07:42,950 INFO L125 PetriNetUnfolderBase]: For 160491/160502 co-relation queries the response was YES. [2023-08-26 09:07:42,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33208 conditions, 3832 events. 1909/3832 cut-off events. For 160491/160502 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 28366 event pairs, 227 based on Foata normal form. 12/3757 useless extension candidates. Maximal degree in co-relation 33134. Up to 1218 conditions per place. [2023-08-26 09:07:42,984 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 186 selfloop transitions, 348 changer transitions 11/551 dead transitions. [2023-08-26 09:07:42,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 551 transitions, 13855 flow [2023-08-26 09:07:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 09:07:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 09:07:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3628 transitions. [2023-08-26 09:07:42,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42783018867924527 [2023-08-26 09:07:42,989 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3628 transitions. [2023-08-26 09:07:42,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3628 transitions. [2023-08-26 09:07:42,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:42,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3628 transitions. [2023-08-26 09:07:42,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 113.375) internal successors, (3628), 32 states have internal predecessors, (3628), 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) [2023-08-26 09:07:42,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 265.0) internal successors, (8745), 33 states have internal predecessors, (8745), 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) [2023-08-26 09:07:43,000 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 265.0) internal successors, (8745), 33 states have internal predecessors, (8745), 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) [2023-08-26 09:07:43,000 INFO L175 Difference]: Start difference. First operand has 272 places, 430 transitions, 11430 flow. Second operand 32 states and 3628 transitions. [2023-08-26 09:07:43,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 551 transitions, 13855 flow [2023-08-26 09:07:43,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 551 transitions, 13553 flow, removed 114 selfloop flow, removed 13 redundant places. [2023-08-26 09:07:43,521 INFO L231 Difference]: Finished difference. Result has 294 places, 452 transitions, 12917 flow [2023-08-26 09:07:43,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=11212, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=12917, PETRI_PLACES=294, PETRI_TRANSITIONS=452} [2023-08-26 09:07:43,521 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2023-08-26 09:07:43,521 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 452 transitions, 12917 flow [2023-08-26 09:07:43,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:07:43,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:43,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:43,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-08-26 09:07:43,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:43,727 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:07:43,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:43,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1804671864, now seen corresponding path program 9 times [2023-08-26 09:07:43,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:43,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408100931] [2023-08-26 09:07:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:43,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:44,255 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:44,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:44,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408100931] [2023-08-26 09:07:44,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408100931] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:44,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527447833] [2023-08-26 09:07:44,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:07:44,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:44,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:44,256 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:44,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 09:07:44,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:07:44,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:44,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:07:44,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:44,632 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:48,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527447833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:48,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:48,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:07:48,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098565014] [2023-08-26 09:07:48,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:48,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:07:48,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:48,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:07:48,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:07:48,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:07:48,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 452 transitions, 12917 flow. Second operand has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:07:48,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:48,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:07:48,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:07:51,818 INFO L124 PetriNetUnfolderBase]: 1928/3902 cut-off events. [2023-08-26 09:07:51,818 INFO L125 PetriNetUnfolderBase]: For 183462/183473 co-relation queries the response was YES. [2023-08-26 09:07:51,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35233 conditions, 3902 events. 1928/3902 cut-off events. For 183462/183473 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 29126 event pairs, 215 based on Foata normal form. 13/3828 useless extension candidates. Maximal degree in co-relation 35154. Up to 1518 conditions per place. [2023-08-26 09:07:51,859 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 205 selfloop transitions, 317 changer transitions 10/538 dead transitions. [2023-08-26 09:07:51,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 538 transitions, 14726 flow [2023-08-26 09:07:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:07:51,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:07:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2498 transitions. [2023-08-26 09:07:51,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42847341337907374 [2023-08-26 09:07:51,868 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2498 transitions. [2023-08-26 09:07:51,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2498 transitions. [2023-08-26 09:07:51,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:07:51,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2498 transitions. [2023-08-26 09:07:51,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 113.54545454545455) internal successors, (2498), 22 states have internal predecessors, (2498), 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) [2023-08-26 09:07:51,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 265.0) internal successors, (6095), 23 states have internal predecessors, (6095), 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) [2023-08-26 09:07:51,876 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 265.0) internal successors, (6095), 23 states have internal predecessors, (6095), 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) [2023-08-26 09:07:51,876 INFO L175 Difference]: Start difference. First operand has 294 places, 452 transitions, 12917 flow. Second operand 22 states and 2498 transitions. [2023-08-26 09:07:51,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 538 transitions, 14726 flow [2023-08-26 09:07:52,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 538 transitions, 14412 flow, removed 50 selfloop flow, removed 20 redundant places. [2023-08-26 09:07:52,621 INFO L231 Difference]: Finished difference. Result has 300 places, 463 transitions, 14128 flow [2023-08-26 09:07:52,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=12606, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=307, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=14128, PETRI_PLACES=300, PETRI_TRANSITIONS=463} [2023-08-26 09:07:52,622 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 260 predicate places. [2023-08-26 09:07:52,622 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 463 transitions, 14128 flow [2023-08-26 09:07:52,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:07:52,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:07:52,622 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:07:52,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-26 09:07:52,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:52,823 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:07:52,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:07:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1737253074, now seen corresponding path program 10 times [2023-08-26 09:07:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:07:52,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961015262] [2023-08-26 09:07:52,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:07:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:07:52,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:07:53,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:53,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:07:53,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961015262] [2023-08-26 09:07:53,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961015262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:07:53,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495082811] [2023-08-26 09:07:53,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:07:53,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:07:53,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:07:53,389 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:07:53,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 09:07:53,473 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:07:53,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:07:53,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:07:53,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:07:53,730 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:53,730 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:07:57,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:07:57,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495082811] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:07:57,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:07:57,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:07:57,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557477256] [2023-08-26 09:07:57,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:07:57,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:07:57,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:07:57,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:07:57,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:07:57,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:07:57,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 463 transitions, 14128 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:07:57,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:07:57,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:07:57,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:04,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:08:04,979 INFO L124 PetriNetUnfolderBase]: 2062/4175 cut-off events. [2023-08-26 09:08:04,979 INFO L125 PetriNetUnfolderBase]: For 233470/233470 co-relation queries the response was YES. [2023-08-26 09:08:05,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40184 conditions, 4175 events. 2062/4175 cut-off events. For 233470/233470 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 31697 event pairs, 268 based on Foata normal form. 2/4082 useless extension candidates. Maximal degree in co-relation 40103. Up to 1439 conditions per place. [2023-08-26 09:08:05,024 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 212 selfloop transitions, 370 changer transitions 10/598 dead transitions. [2023-08-26 09:08:05,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 598 transitions, 17281 flow [2023-08-26 09:08:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 09:08:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 09:08:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3499 transitions. [2023-08-26 09:08:05,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259281801582471 [2023-08-26 09:08:05,030 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3499 transitions. [2023-08-26 09:08:05,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3499 transitions. [2023-08-26 09:08:05,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:05,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3499 transitions. [2023-08-26 09:08:05,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 112.87096774193549) internal successors, (3499), 31 states have internal predecessors, (3499), 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) [2023-08-26 09:08:05,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 265.0) internal successors, (8480), 32 states have internal predecessors, (8480), 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) [2023-08-26 09:08:05,040 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 265.0) internal successors, (8480), 32 states have internal predecessors, (8480), 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) [2023-08-26 09:08:05,040 INFO L175 Difference]: Start difference. First operand has 300 places, 463 transitions, 14128 flow. Second operand 31 states and 3499 transitions. [2023-08-26 09:08:05,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 598 transitions, 17281 flow [2023-08-26 09:08:05,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 598 transitions, 17170 flow, removed 32 selfloop flow, removed 11 redundant places. [2023-08-26 09:08:05,822 INFO L231 Difference]: Finished difference. Result has 326 places, 508 transitions, 16789 flow [2023-08-26 09:08:05,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=14047, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=16789, PETRI_PLACES=326, PETRI_TRANSITIONS=508} [2023-08-26 09:08:05,823 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 286 predicate places. [2023-08-26 09:08:05,823 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 508 transitions, 16789 flow [2023-08-26 09:08:05,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:08:05,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:05,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:05,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:06,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:06,024 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:08:06,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1316255354, now seen corresponding path program 11 times [2023-08-26 09:08:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:06,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059994680] [2023-08-26 09:08:06,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:06,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:06,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059994680] [2023-08-26 09:08:06,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059994680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:06,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729273716] [2023-08-26 09:08:06,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:08:06,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:06,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:06,663 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:06,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 09:08:06,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:08:06,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:06,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:08:06,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:07,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:12,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729273716] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:12,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:12,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:08:12,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544400397] [2023-08-26 09:08:12,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:12,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:08:12,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:12,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:08:12,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:08:12,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:08:12,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 508 transitions, 16789 flow. Second operand has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:08:12,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:12,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:08:12,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:17,854 INFO L124 PetriNetUnfolderBase]: 2141/4333 cut-off events. [2023-08-26 09:08:17,854 INFO L125 PetriNetUnfolderBase]: For 280232/280240 co-relation queries the response was YES. [2023-08-26 09:08:17,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44078 conditions, 4333 events. 2141/4333 cut-off events. For 280232/280240 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 32810 event pairs, 263 based on Foata normal form. 11/4245 useless extension candidates. Maximal degree in co-relation 43991. Up to 1457 conditions per place. [2023-08-26 09:08:17,899 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 205 selfloop transitions, 393 changer transitions 11/615 dead transitions. [2023-08-26 09:08:17,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 615 transitions, 19248 flow [2023-08-26 09:08:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-26 09:08:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-26 09:08:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3172 transitions. [2023-08-26 09:08:17,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42749326145552563 [2023-08-26 09:08:17,904 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3172 transitions. [2023-08-26 09:08:17,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3172 transitions. [2023-08-26 09:08:17,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:17,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3172 transitions. [2023-08-26 09:08:17,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 113.28571428571429) internal successors, (3172), 28 states have internal predecessors, (3172), 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) [2023-08-26 09:08:17,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:08:17,913 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:08:17,913 INFO L175 Difference]: Start difference. First operand has 326 places, 508 transitions, 16789 flow. Second operand 28 states and 3172 transitions. [2023-08-26 09:08:17,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 615 transitions, 19248 flow [2023-08-26 09:08:18,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 615 transitions, 19107 flow, removed 36 selfloop flow, removed 13 redundant places. [2023-08-26 09:08:18,856 INFO L231 Difference]: Finished difference. Result has 341 places, 525 transitions, 18560 flow [2023-08-26 09:08:18,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=16632, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=377, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18560, PETRI_PLACES=341, PETRI_TRANSITIONS=525} [2023-08-26 09:08:18,856 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 301 predicate places. [2023-08-26 09:08:18,857 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 525 transitions, 18560 flow [2023-08-26 09:08:18,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:08:18,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:18,857 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:18,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:19,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:19,062 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:08:19,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:19,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1484628842, now seen corresponding path program 12 times [2023-08-26 09:08:19,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:19,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040644471] [2023-08-26 09:08:19,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:19,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:19,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040644471] [2023-08-26 09:08:19,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040644471] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615601980] [2023-08-26 09:08:19,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:08:19,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:19,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:19,569 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:19,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 09:08:19,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:08:19,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:19,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:08:19,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:19,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:22,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615601980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:22,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:22,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:08:22,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836173094] [2023-08-26 09:08:22,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:22,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:08:22,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:08:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:08:22,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:08:22,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 525 transitions, 18560 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:08:22,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:22,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:08:22,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:28,599 INFO L124 PetriNetUnfolderBase]: 2431/4957 cut-off events. [2023-08-26 09:08:28,599 INFO L125 PetriNetUnfolderBase]: For 367366/367366 co-relation queries the response was YES. [2023-08-26 09:08:28,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53435 conditions, 4957 events. 2431/4957 cut-off events. For 367366/367366 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 38761 event pairs, 216 based on Foata normal form. 2/4853 useless extension candidates. Maximal degree in co-relation 53343. Up to 1561 conditions per place. [2023-08-26 09:08:28,656 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 233 selfloop transitions, 461 changer transitions 7/707 dead transitions. [2023-08-26 09:08:28,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 707 transitions, 23939 flow [2023-08-26 09:08:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-26 09:08:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-26 09:08:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3725 transitions. [2023-08-26 09:08:28,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259576901086335 [2023-08-26 09:08:28,659 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3725 transitions. [2023-08-26 09:08:28,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3725 transitions. [2023-08-26 09:08:28,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:28,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3725 transitions. [2023-08-26 09:08:28,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 112.87878787878788) internal successors, (3725), 33 states have internal predecessors, (3725), 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) [2023-08-26 09:08:28,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 265.0) internal successors, (9010), 34 states have internal predecessors, (9010), 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) [2023-08-26 09:08:28,670 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 265.0) internal successors, (9010), 34 states have internal predecessors, (9010), 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) [2023-08-26 09:08:28,671 INFO L175 Difference]: Start difference. First operand has 341 places, 525 transitions, 18560 flow. Second operand 33 states and 3725 transitions. [2023-08-26 09:08:28,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 707 transitions, 23939 flow [2023-08-26 09:08:30,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 707 transitions, 23785 flow, removed 25 selfloop flow, removed 20 redundant places. [2023-08-26 09:08:30,047 INFO L231 Difference]: Finished difference. Result has 363 places, 609 transitions, 23563 flow [2023-08-26 09:08:30,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=18427, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=383, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=23563, PETRI_PLACES=363, PETRI_TRANSITIONS=609} [2023-08-26 09:08:30,048 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2023-08-26 09:08:30,048 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 609 transitions, 23563 flow [2023-08-26 09:08:30,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:08:30,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:30,049 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:30,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:30,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:30,253 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:08:30,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:30,253 INFO L85 PathProgramCache]: Analyzing trace with hash -474714182, now seen corresponding path program 13 times [2023-08-26 09:08:30,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:30,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819160266] [2023-08-26 09:08:30,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:30,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:30,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819160266] [2023-08-26 09:08:30,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819160266] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:30,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146979348] [2023-08-26 09:08:30,858 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:08:30,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:30,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:30,859 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:30,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 09:08:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:30,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:08:30,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:31,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:34,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146979348] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:34,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:34,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:08:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880832532] [2023-08-26 09:08:34,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:34,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:08:34,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:34,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:08:34,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:08:34,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:08:34,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 609 transitions, 23563 flow. Second operand has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:08:34,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:34,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:08:34,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:41,489 INFO L124 PetriNetUnfolderBase]: 2540/5157 cut-off events. [2023-08-26 09:08:41,489 INFO L125 PetriNetUnfolderBase]: For 456968/456976 co-relation queries the response was YES. [2023-08-26 09:08:41,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59862 conditions, 5157 events. 2540/5157 cut-off events. For 456968/456976 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40114 event pairs, 218 based on Foata normal form. 11/5072 useless extension candidates. Maximal degree in co-relation 59759. Up to 1612 conditions per place. [2023-08-26 09:08:41,552 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 257 selfloop transitions, 448 changer transitions 12/723 dead transitions. [2023-08-26 09:08:41,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 723 transitions, 26548 flow [2023-08-26 09:08:41,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 09:08:41,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 09:08:41,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3601 transitions. [2023-08-26 09:08:41,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42464622641509436 [2023-08-26 09:08:41,555 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3601 transitions. [2023-08-26 09:08:41,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3601 transitions. [2023-08-26 09:08:41,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:41,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3601 transitions. [2023-08-26 09:08:41,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 112.53125) internal successors, (3601), 32 states have internal predecessors, (3601), 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) [2023-08-26 09:08:41,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 265.0) internal successors, (8745), 33 states have internal predecessors, (8745), 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) [2023-08-26 09:08:41,566 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 265.0) internal successors, (8745), 33 states have internal predecessors, (8745), 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) [2023-08-26 09:08:41,566 INFO L175 Difference]: Start difference. First operand has 363 places, 609 transitions, 23563 flow. Second operand 32 states and 3601 transitions. [2023-08-26 09:08:41,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 723 transitions, 26548 flow [2023-08-26 09:08:43,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 723 transitions, 26286 flow, removed 95 selfloop flow, removed 17 redundant places. [2023-08-26 09:08:43,349 INFO L231 Difference]: Finished difference. Result has 381 places, 636 transitions, 25785 flow [2023-08-26 09:08:43,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=23317, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=422, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=25785, PETRI_PLACES=381, PETRI_TRANSITIONS=636} [2023-08-26 09:08:43,350 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 341 predicate places. [2023-08-26 09:08:43,350 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 636 transitions, 25785 flow [2023-08-26 09:08:43,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:08:43,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:43,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:43,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:43,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-26 09:08:43,551 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:08:43,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:43,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1915309850, now seen corresponding path program 14 times [2023-08-26 09:08:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:43,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647843879] [2023-08-26 09:08:43,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:43,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:44,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:44,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647843879] [2023-08-26 09:08:44,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647843879] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:44,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601804537] [2023-08-26 09:08:44,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:08:44,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:44,051 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:44,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 09:08:44,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:08:44,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:44,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:08:44,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:44,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:44,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:08:49,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:49,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601804537] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:08:49,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:08:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:08:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857072503] [2023-08-26 09:08:49,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:08:49,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:08:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:08:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:08:49,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:08:49,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:08:49,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 636 transitions, 25785 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:08:49,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:08:49,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:08:49,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:08:53,856 INFO L124 PetriNetUnfolderBase]: 2520/5154 cut-off events. [2023-08-26 09:08:53,856 INFO L125 PetriNetUnfolderBase]: For 502359/502367 co-relation queries the response was YES. [2023-08-26 09:08:53,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61932 conditions, 5154 events. 2520/5154 cut-off events. For 502359/502367 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 40282 event pairs, 242 based on Foata normal form. 10/5062 useless extension candidates. Maximal degree in co-relation 61831. Up to 2429 conditions per place. [2023-08-26 09:08:53,924 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 257 selfloop transitions, 431 changer transitions 10/704 dead transitions. [2023-08-26 09:08:53,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 704 transitions, 27689 flow [2023-08-26 09:08:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:08:53,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:08:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3036 transitions. [2023-08-26 09:08:53,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243186582809224 [2023-08-26 09:08:53,928 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3036 transitions. [2023-08-26 09:08:53,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3036 transitions. [2023-08-26 09:08:53,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:08:53,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3036 transitions. [2023-08-26 09:08:53,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 112.44444444444444) internal successors, (3036), 27 states have internal predecessors, (3036), 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) [2023-08-26 09:08:53,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 265.0) internal successors, (7420), 28 states have internal predecessors, (7420), 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) [2023-08-26 09:08:53,936 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 265.0) internal successors, (7420), 28 states have internal predecessors, (7420), 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) [2023-08-26 09:08:53,936 INFO L175 Difference]: Start difference. First operand has 381 places, 636 transitions, 25785 flow. Second operand 27 states and 3036 transitions. [2023-08-26 09:08:53,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 704 transitions, 27689 flow [2023-08-26 09:08:55,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 704 transitions, 27451 flow, removed 56 selfloop flow, removed 25 redundant places. [2023-08-26 09:08:55,857 INFO L231 Difference]: Finished difference. Result has 385 places, 640 transitions, 27326 flow [2023-08-26 09:08:55,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=25575, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=27326, PETRI_PLACES=385, PETRI_TRANSITIONS=640} [2023-08-26 09:08:55,858 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 345 predicate places. [2023-08-26 09:08:55,858 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 640 transitions, 27326 flow [2023-08-26 09:08:55,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:08:55,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:08:55,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:08:55,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-26 09:08:56,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-26 09:08:56,064 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:08:56,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:08:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash -295084768, now seen corresponding path program 15 times [2023-08-26 09:08:56,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:08:56,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678039165] [2023-08-26 09:08:56,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:08:56,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:08:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:08:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:56,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:08:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678039165] [2023-08-26 09:08:56,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678039165] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:08:56,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462239458] [2023-08-26 09:08:56,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:08:56,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:08:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:08:56,559 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:08:56,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-26 09:08:56,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:08:56,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:08:56,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:08:56,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:08:56,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:08:56,909 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:09:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:11,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462239458] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:09:11,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:09:11,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:09:11,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729412287] [2023-08-26 09:09:11,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:09:11,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:09:11,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:09:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:09:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:09:11,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:09:11,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 640 transitions, 27326 flow. Second operand has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:09:11,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:09:11,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:09:11,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:16,155 INFO L124 PetriNetUnfolderBase]: 2681/5457 cut-off events. [2023-08-26 09:09:16,155 INFO L125 PetriNetUnfolderBase]: For 583517/583531 co-relation queries the response was YES. [2023-08-26 09:09:16,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68036 conditions, 5457 events. 2681/5457 cut-off events. For 583517/583531 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 43134 event pairs, 311 based on Foata normal form. 14/5360 useless extension candidates. Maximal degree in co-relation 67933. Up to 2313 conditions per place. [2023-08-26 09:09:16,226 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 285 selfloop transitions, 452 changer transitions 10/753 dead transitions. [2023-08-26 09:09:16,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 753 transitions, 31080 flow [2023-08-26 09:09:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 09:09:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 09:09:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2495 transitions. [2023-08-26 09:09:16,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.427958833619211 [2023-08-26 09:09:16,228 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2495 transitions. [2023-08-26 09:09:16,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2495 transitions. [2023-08-26 09:09:16,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:16,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2495 transitions. [2023-08-26 09:09:16,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 113.4090909090909) internal successors, (2495), 22 states have internal predecessors, (2495), 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) [2023-08-26 09:09:16,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 265.0) internal successors, (6095), 23 states have internal predecessors, (6095), 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) [2023-08-26 09:09:16,234 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 265.0) internal successors, (6095), 23 states have internal predecessors, (6095), 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) [2023-08-26 09:09:16,235 INFO L175 Difference]: Start difference. First operand has 385 places, 640 transitions, 27326 flow. Second operand 22 states and 2495 transitions. [2023-08-26 09:09:16,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 753 transitions, 31080 flow [2023-08-26 09:09:18,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 753 transitions, 30968 flow, removed 8 selfloop flow, removed 19 redundant places. [2023-08-26 09:09:18,339 INFO L231 Difference]: Finished difference. Result has 396 places, 684 transitions, 30867 flow [2023-08-26 09:09:18,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=27227, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=640, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=411, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=30867, PETRI_PLACES=396, PETRI_TRANSITIONS=684} [2023-08-26 09:09:18,340 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 356 predicate places. [2023-08-26 09:09:18,340 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 684 transitions, 30867 flow [2023-08-26 09:09:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:09:18,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:09:18,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:09:18,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-26 09:09:18,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-26 09:09:18,541 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:09:18,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:09:18,542 INFO L85 PathProgramCache]: Analyzing trace with hash -934551730, now seen corresponding path program 16 times [2023-08-26 09:09:18,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:09:18,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409789705] [2023-08-26 09:09:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:09:18,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:09:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:09:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:19,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:09:19,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409789705] [2023-08-26 09:09:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409789705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:09:19,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059045926] [2023-08-26 09:09:19,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:09:19,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:19,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:09:19,101 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:09:19,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-26 09:09:19,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:09:19,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:09:19,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:09:19,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:09:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:19,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:09:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:36,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059045926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:09:36,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:09:36,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:09:36,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955759526] [2023-08-26 09:09:36,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:09:36,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:09:36,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:09:36,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:09:36,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:09:36,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:09:36,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 684 transitions, 30867 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:09:36,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:09:36,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:09:36,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:09:48,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:09:50,272 INFO L124 PetriNetUnfolderBase]: 2869/5783 cut-off events. [2023-08-26 09:09:50,273 INFO L125 PetriNetUnfolderBase]: For 710996/711010 co-relation queries the response was YES. [2023-08-26 09:09:50,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76423 conditions, 5783 events. 2869/5783 cut-off events. For 710996/711010 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 45814 event pairs, 364 based on Foata normal form. 14/5676 useless extension candidates. Maximal degree in co-relation 76311. Up to 2056 conditions per place. [2023-08-26 09:09:50,353 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 266 selfloop transitions, 520 changer transitions 10/802 dead transitions. [2023-08-26 09:09:50,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 802 transitions, 34979 flow [2023-08-26 09:09:50,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-26 09:09:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-26 09:09:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3164 transitions. [2023-08-26 09:09:50,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42641509433962266 [2023-08-26 09:09:50,356 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3164 transitions. [2023-08-26 09:09:50,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3164 transitions. [2023-08-26 09:09:50,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:09:50,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3164 transitions. [2023-08-26 09:09:50,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 113.0) internal successors, (3164), 28 states have internal predecessors, (3164), 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) [2023-08-26 09:09:50,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:09:50,365 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:09:50,365 INFO L175 Difference]: Start difference. First operand has 396 places, 684 transitions, 30867 flow. Second operand 28 states and 3164 transitions. [2023-08-26 09:09:50,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 802 transitions, 34979 flow [2023-08-26 09:09:53,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 802 transitions, 34873 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-26 09:09:53,268 INFO L231 Difference]: Finished difference. Result has 425 places, 726 transitions, 34760 flow [2023-08-26 09:09:53,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=30765, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=34760, PETRI_PLACES=425, PETRI_TRANSITIONS=726} [2023-08-26 09:09:53,269 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 385 predicate places. [2023-08-26 09:09:53,269 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 726 transitions, 34760 flow [2023-08-26 09:09:53,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:09:53,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:09:53,270 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:09:53,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-26 09:09:53,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:53,475 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:09:53,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:09:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1477388036, now seen corresponding path program 17 times [2023-08-26 09:09:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:09:53,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573712030] [2023-08-26 09:09:53,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:09:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:09:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:09:53,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:53,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:09:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573712030] [2023-08-26 09:09:53,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573712030] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:09:53,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372898021] [2023-08-26 09:09:53,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:09:53,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:09:53,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:09:53,983 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:09:53,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-26 09:09:54,071 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:09:54,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:09:54,072 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:09:54,072 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:09:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:09:54,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:10:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:05,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372898021] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:10:05,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:10:05,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:10:05,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497253794] [2023-08-26 09:10:05,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:10:05,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:10:05,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:10:05,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:10:05,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:10:05,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:10:05,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 726 transitions, 34760 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:10:05,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:10:05,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:10:05,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:10:15,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:10:16,764 INFO L124 PetriNetUnfolderBase]: 3128/6344 cut-off events. [2023-08-26 09:10:16,764 INFO L125 PetriNetUnfolderBase]: For 887608/887608 co-relation queries the response was YES. [2023-08-26 09:10:16,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88106 conditions, 6344 events. 3128/6344 cut-off events. For 887608/887608 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 51471 event pairs, 272 based on Foata normal form. 3/6217 useless extension candidates. Maximal degree in co-relation 87986. Up to 2043 conditions per place. [2023-08-26 09:10:16,851 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 315 selfloop transitions, 564 changer transitions 12/897 dead transitions. [2023-08-26 09:10:16,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 897 transitions, 41150 flow [2023-08-26 09:10:16,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-26 09:10:16,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-26 09:10:16,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3940 transitions. [2023-08-26 09:10:16,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42479784366576817 [2023-08-26 09:10:16,855 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3940 transitions. [2023-08-26 09:10:16,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3940 transitions. [2023-08-26 09:10:16,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:10:16,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3940 transitions. [2023-08-26 09:10:16,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 112.57142857142857) internal successors, (3940), 35 states have internal predecessors, (3940), 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) [2023-08-26 09:10:16,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 265.0) internal successors, (9540), 36 states have internal predecessors, (9540), 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) [2023-08-26 09:10:16,862 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 265.0) internal successors, (9540), 36 states have internal predecessors, (9540), 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) [2023-08-26 09:10:16,862 INFO L175 Difference]: Start difference. First operand has 425 places, 726 transitions, 34760 flow. Second operand 35 states and 3940 transitions. [2023-08-26 09:10:16,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 897 transitions, 41150 flow [2023-08-26 09:10:20,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 897 transitions, 40873 flow, removed 104 selfloop flow, removed 14 redundant places. [2023-08-26 09:10:20,166 INFO L231 Difference]: Finished difference. Result has 454 places, 803 transitions, 40265 flow [2023-08-26 09:10:20,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=34531, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=496, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=40265, PETRI_PLACES=454, PETRI_TRANSITIONS=803} [2023-08-26 09:10:20,167 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 414 predicate places. [2023-08-26 09:10:20,167 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 803 transitions, 40265 flow [2023-08-26 09:10:20,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:10:20,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:10:20,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:10:20,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-26 09:10:20,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-26 09:10:20,372 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:10:20,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:10:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1334500716, now seen corresponding path program 18 times [2023-08-26 09:10:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:10:20,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038457309] [2023-08-26 09:10:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:10:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:10:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:10:20,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:20,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:10:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038457309] [2023-08-26 09:10:20,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038457309] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:10:20,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184935676] [2023-08-26 09:10:20,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:10:20,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:10:20,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:10:20,805 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:10:20,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-26 09:10:20,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:10:20,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:10:20,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:10:20,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:10:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:21,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:10:37,517 WARN L234 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 120 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:10:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:10:42,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184935676] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:10:42,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:10:42,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:10:42,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027016529] [2023-08-26 09:10:42,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:10:42,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:10:42,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:10:42,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:10:42,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=365, Unknown=1, NotChecked=0, Total=462 [2023-08-26 09:10:42,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:10:42,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 803 transitions, 40265 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:10:42,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:10:42,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:10:42,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:10:46,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-26 09:10:51,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:10:53,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:10:59,236 INFO L124 PetriNetUnfolderBase]: 3125/6373 cut-off events. [2023-08-26 09:10:59,236 INFO L125 PetriNetUnfolderBase]: For 970930/970934 co-relation queries the response was YES. [2023-08-26 09:10:59,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91480 conditions, 6373 events. 3125/6373 cut-off events. For 970930/970934 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 52132 event pairs, 351 based on Foata normal form. 6/6241 useless extension candidates. Maximal degree in co-relation 91352. Up to 2779 conditions per place. [2023-08-26 09:10:59,389 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 342 selfloop transitions, 538 changer transitions 10/896 dead transitions. [2023-08-26 09:10:59,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 896 transitions, 43628 flow [2023-08-26 09:10:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 09:10:59,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 09:10:59,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2717 transitions. [2023-08-26 09:10:59,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272012578616352 [2023-08-26 09:10:59,392 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2717 transitions. [2023-08-26 09:10:59,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2717 transitions. [2023-08-26 09:10:59,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:10:59,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2717 transitions. [2023-08-26 09:10:59,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 113.20833333333333) internal successors, (2717), 24 states have internal predecessors, (2717), 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) [2023-08-26 09:10:59,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 265.0) internal successors, (6625), 25 states have internal predecessors, (6625), 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) [2023-08-26 09:10:59,399 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 265.0) internal successors, (6625), 25 states have internal predecessors, (6625), 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) [2023-08-26 09:10:59,399 INFO L175 Difference]: Start difference. First operand has 454 places, 803 transitions, 40265 flow. Second operand 24 states and 2717 transitions. [2023-08-26 09:10:59,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 896 transitions, 43628 flow [2023-08-26 09:11:03,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 896 transitions, 43271 flow, removed 142 selfloop flow, removed 13 redundant places. [2023-08-26 09:11:03,141 INFO L231 Difference]: Finished difference. Result has 471 places, 825 transitions, 43118 flow [2023-08-26 09:11:03,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=39929, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=517, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=43118, PETRI_PLACES=471, PETRI_TRANSITIONS=825} [2023-08-26 09:11:03,142 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 431 predicate places. [2023-08-26 09:11:03,143 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 825 transitions, 43118 flow [2023-08-26 09:11:03,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:11:03,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:11:03,143 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:11:03,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-26 09:11:03,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-26 09:11:03,348 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:11:03,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:11:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 944335176, now seen corresponding path program 19 times [2023-08-26 09:11:03,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:11:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843200146] [2023-08-26 09:11:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:11:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:11:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:11:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:11:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843200146] [2023-08-26 09:11:03,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843200146] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:11:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720950767] [2023-08-26 09:11:03,940 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:11:03,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:03,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:11:03,945 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:11:03,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-26 09:11:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:11:04,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:11:04,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:11:04,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:04,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:11:20,668 WARN L234 SmtUtils]: Spent 7.41s on a formula simplification. DAG size of input: 128 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:11:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:24,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720950767] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:11:24,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:11:24,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:11:24,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243325666] [2023-08-26 09:11:24,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:11:24,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:11:24,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:11:24,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:11:24,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:11:24,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:11:24,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 825 transitions, 43118 flow. Second operand has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:11:24,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:11:24,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:11:24,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:11:33,631 INFO L124 PetriNetUnfolderBase]: 3286/6664 cut-off events. [2023-08-26 09:11:33,631 INFO L125 PetriNetUnfolderBase]: For 1125551/1125551 co-relation queries the response was YES. [2023-08-26 09:11:33,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100033 conditions, 6664 events. 3286/6664 cut-off events. For 1125551/1125551 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 54406 event pairs, 387 based on Foata normal form. 3/6530 useless extension candidates. Maximal degree in co-relation 99898. Up to 2405 conditions per place. [2023-08-26 09:11:33,741 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 300 selfloop transitions, 615 changer transitions 11/932 dead transitions. [2023-08-26 09:11:33,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 932 transitions, 46887 flow [2023-08-26 09:11:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-26 09:11:33,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-26 09:11:33,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3173 transitions. [2023-08-26 09:11:33,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42762803234501345 [2023-08-26 09:11:33,744 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3173 transitions. [2023-08-26 09:11:33,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3173 transitions. [2023-08-26 09:11:33,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:11:33,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3173 transitions. [2023-08-26 09:11:33,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 113.32142857142857) internal successors, (3173), 28 states have internal predecessors, (3173), 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) [2023-08-26 09:11:33,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:11:33,750 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:11:33,750 INFO L175 Difference]: Start difference. First operand has 471 places, 825 transitions, 43118 flow. Second operand 28 states and 3173 transitions. [2023-08-26 09:11:33,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 932 transitions, 46887 flow [2023-08-26 09:11:38,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 932 transitions, 46694 flow, removed 58 selfloop flow, removed 10 redundant places. [2023-08-26 09:11:38,302 INFO L231 Difference]: Finished difference. Result has 493 places, 844 transitions, 46400 flow [2023-08-26 09:11:38,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=42933, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=46400, PETRI_PLACES=493, PETRI_TRANSITIONS=844} [2023-08-26 09:11:38,304 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 453 predicate places. [2023-08-26 09:11:38,304 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 844 transitions, 46400 flow [2023-08-26 09:11:38,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:11:38,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:11:38,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:11:38,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-26 09:11:38,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:38,510 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:11:38,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:11:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash 138533650, now seen corresponding path program 20 times [2023-08-26 09:11:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:11:38,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624024494] [2023-08-26 09:11:38,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:11:38,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:11:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:11:39,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:39,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:11:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624024494] [2023-08-26 09:11:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624024494] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:11:39,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043861691] [2023-08-26 09:11:39,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:11:39,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:11:39,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:11:39,107 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:11:39,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-26 09:11:39,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:11:39,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:11:39,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:11:39,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:11:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:39,488 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:11:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:11:55,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043861691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:11:55,780 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:11:55,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:11:55,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827213471] [2023-08-26 09:11:55,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:11:55,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:11:55,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:11:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:11:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:11:55,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:11:55,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 844 transitions, 46400 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:11:55,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:11:55,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:11:55,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:12:05,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:12:09,199 INFO L124 PetriNetUnfolderBase]: 3415/6902 cut-off events. [2023-08-26 09:12:09,200 INFO L125 PetriNetUnfolderBase]: For 1297634/1297646 co-relation queries the response was YES. [2023-08-26 09:12:09,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108330 conditions, 6902 events. 3415/6902 cut-off events. For 1297634/1297646 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 56246 event pairs, 278 based on Foata normal form. 15/6781 useless extension candidates. Maximal degree in co-relation 108192. Up to 2214 conditions per place. [2023-08-26 09:12:09,321 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 304 selfloop transitions, 652 changer transitions 8/970 dead transitions. [2023-08-26 09:12:09,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 970 transitions, 50945 flow [2023-08-26 09:12:09,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-26 09:12:09,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-26 09:12:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4058 transitions. [2023-08-26 09:12:09,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42536687631027253 [2023-08-26 09:12:09,324 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4058 transitions. [2023-08-26 09:12:09,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4058 transitions. [2023-08-26 09:12:09,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:12:09,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4058 transitions. [2023-08-26 09:12:09,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 112.72222222222223) internal successors, (4058), 36 states have internal predecessors, (4058), 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) [2023-08-26 09:12:09,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 265.0) internal successors, (9805), 37 states have internal predecessors, (9805), 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) [2023-08-26 09:12:09,331 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 265.0) internal successors, (9805), 37 states have internal predecessors, (9805), 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) [2023-08-26 09:12:09,331 INFO L175 Difference]: Start difference. First operand has 493 places, 844 transitions, 46400 flow. Second operand 36 states and 4058 transitions. [2023-08-26 09:12:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 970 transitions, 50945 flow [2023-08-26 09:12:14,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 970 transitions, 50741 flow, removed 32 selfloop flow, removed 19 redundant places. [2023-08-26 09:12:14,501 INFO L231 Difference]: Finished difference. Result has 514 places, 874 transitions, 50006 flow [2023-08-26 09:12:14,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=46200, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=624, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=50006, PETRI_PLACES=514, PETRI_TRANSITIONS=874} [2023-08-26 09:12:14,503 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 474 predicate places. [2023-08-26 09:12:14,503 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 874 transitions, 50006 flow [2023-08-26 09:12:14,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:12:14,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:12:14,503 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:12:14,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-26 09:12:14,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:14,704 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:12:14,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:12:14,704 INFO L85 PathProgramCache]: Analyzing trace with hash -292147358, now seen corresponding path program 21 times [2023-08-26 09:12:14,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:12:14,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827187348] [2023-08-26 09:12:14,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:12:14,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:12:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:15,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:15,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:12:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827187348] [2023-08-26 09:12:15,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827187348] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:12:15,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404935303] [2023-08-26 09:12:15,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:12:15,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:15,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:12:15,173 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:12:15,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-26 09:12:15,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:12:15,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:12:15,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:12:15,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:12:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:15,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:12:29,005 WARN L234 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 122 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:12:33,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:33,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404935303] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:12:33,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:12:33,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:12:33,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287801305] [2023-08-26 09:12:33,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:12:33,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:12:33,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:12:33,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:12:33,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:12:33,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:12:33,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 874 transitions, 50006 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:12:33,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:12:33,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:12:33,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:12:42,308 INFO L124 PetriNetUnfolderBase]: 3419/6957 cut-off events. [2023-08-26 09:12:42,309 INFO L125 PetriNetUnfolderBase]: For 1404121/1404121 co-relation queries the response was YES. [2023-08-26 09:12:42,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112443 conditions, 6957 events. 3419/6957 cut-off events. For 1404121/1404121 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 56998 event pairs, 318 based on Foata normal form. 2/6821 useless extension candidates. Maximal degree in co-relation 112300. Up to 3361 conditions per place. [2023-08-26 09:12:42,508 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 347 selfloop transitions, 580 changer transitions 10/943 dead transitions. [2023-08-26 09:12:42,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 943 transitions, 52528 flow [2023-08-26 09:12:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-26 09:12:42,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-26 09:12:42,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3147 transitions. [2023-08-26 09:12:42,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42412398921832883 [2023-08-26 09:12:42,511 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3147 transitions. [2023-08-26 09:12:42,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3147 transitions. [2023-08-26 09:12:42,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:12:42,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3147 transitions. [2023-08-26 09:12:42,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 112.39285714285714) internal successors, (3147), 28 states have internal predecessors, (3147), 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) [2023-08-26 09:12:42,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:12:42,518 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 265.0) internal successors, (7685), 29 states have internal predecessors, (7685), 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) [2023-08-26 09:12:42,519 INFO L175 Difference]: Start difference. First operand has 514 places, 874 transitions, 50006 flow. Second operand 28 states and 3147 transitions. [2023-08-26 09:12:42,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 943 transitions, 52528 flow [2023-08-26 09:12:48,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 943 transitions, 52283 flow, removed 40 selfloop flow, removed 24 redundant places. [2023-08-26 09:12:48,213 INFO L231 Difference]: Finished difference. Result has 522 places, 879 transitions, 52179 flow [2023-08-26 09:12:48,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=49768, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=575, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=52179, PETRI_PLACES=522, PETRI_TRANSITIONS=879} [2023-08-26 09:12:48,215 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 482 predicate places. [2023-08-26 09:12:48,215 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 879 transitions, 52179 flow [2023-08-26 09:12:48,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:12:48,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:12:48,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:12:48,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-26 09:12:48,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:48,417 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:12:48,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:12:48,417 INFO L85 PathProgramCache]: Analyzing trace with hash 573863446, now seen corresponding path program 22 times [2023-08-26 09:12:48,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:12:48,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559193598] [2023-08-26 09:12:48,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:12:48,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:12:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:12:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:48,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:12:48,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559193598] [2023-08-26 09:12:48,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559193598] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:12:48,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307142239] [2023-08-26 09:12:48,912 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:12:48,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:12:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:12:48,913 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:12:48,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-26 09:12:49,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:12:49,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:12:49,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:12:49,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:12:49,320 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:12:49,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:13:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:05,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307142239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:13:05,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:13:05,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:13:05,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142452159] [2023-08-26 09:13:05,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:13:05,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:13:05,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:13:05,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:13:05,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:13:05,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:13:05,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 879 transitions, 52179 flow. Second operand has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:13:05,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:13:05,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:13:05,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:13:11,980 INFO L124 PetriNetUnfolderBase]: 3489/7070 cut-off events. [2023-08-26 09:13:11,981 INFO L125 PetriNetUnfolderBase]: For 1554388/1554388 co-relation queries the response was YES. [2023-08-26 09:13:12,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118643 conditions, 7070 events. 3489/7070 cut-off events. For 1554388/1554388 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 58166 event pairs, 369 based on Foata normal form. 3/6928 useless extension candidates. Maximal degree in co-relation 118497. Up to 3018 conditions per place. [2023-08-26 09:13:12,130 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 370 selfloop transitions, 605 changer transitions 10/991 dead transitions. [2023-08-26 09:13:12,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 991 transitions, 56679 flow [2023-08-26 09:13:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 09:13:12,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 09:13:12,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2954 transitions. [2023-08-26 09:13:12,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42873730043541364 [2023-08-26 09:13:12,133 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2954 transitions. [2023-08-26 09:13:12,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2954 transitions. [2023-08-26 09:13:12,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:13:12,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2954 transitions. [2023-08-26 09:13:12,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 113.61538461538461) internal successors, (2954), 26 states have internal predecessors, (2954), 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) [2023-08-26 09:13:12,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 265.0) internal successors, (7155), 27 states have internal predecessors, (7155), 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) [2023-08-26 09:13:12,139 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 265.0) internal successors, (7155), 27 states have internal predecessors, (7155), 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) [2023-08-26 09:13:12,139 INFO L175 Difference]: Start difference. First operand has 522 places, 879 transitions, 52179 flow. Second operand 26 states and 2954 transitions. [2023-08-26 09:13:12,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 991 transitions, 56679 flow [2023-08-26 09:13:18,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 991 transitions, 56560 flow, removed 13 selfloop flow, removed 18 redundant places. [2023-08-26 09:13:18,310 INFO L231 Difference]: Finished difference. Result has 535 places, 906 transitions, 56378 flow [2023-08-26 09:13:18,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=52060, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=579, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=56378, PETRI_PLACES=535, PETRI_TRANSITIONS=906} [2023-08-26 09:13:18,312 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 495 predicate places. [2023-08-26 09:13:18,312 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 906 transitions, 56378 flow [2023-08-26 09:13:18,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:13:18,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:13:18,312 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:13:18,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-26 09:13:18,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:13:18,513 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:13:18,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:13:18,513 INFO L85 PathProgramCache]: Analyzing trace with hash 15660342, now seen corresponding path program 23 times [2023-08-26 09:13:18,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:13:18,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803292763] [2023-08-26 09:13:18,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:13:18,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:13:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:13:19,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:19,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:13:19,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803292763] [2023-08-26 09:13:19,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803292763] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:13:19,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467624004] [2023-08-26 09:13:19,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:13:19,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:13:19,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:13:19,024 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:13:19,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-26 09:13:19,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:13:19,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:13:19,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:13:19,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:13:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:19,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:13:32,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:32,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467624004] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:13:32,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:13:32,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:13:32,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836315474] [2023-08-26 09:13:32,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:13:32,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:13:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:13:32,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:13:32,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:13:32,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:13:32,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 906 transitions, 56378 flow. Second operand has 23 states, 23 states have (on average 108.82608695652173) internal successors, (2503), 23 states have internal predecessors, (2503), 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) [2023-08-26 09:13:32,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:13:32,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:13:32,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:13:37,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:13:43,543 INFO L124 PetriNetUnfolderBase]: 3686/7450 cut-off events. [2023-08-26 09:13:43,544 INFO L125 PetriNetUnfolderBase]: For 1825759/1825763 co-relation queries the response was YES. [2023-08-26 09:13:43,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130748 conditions, 7450 events. 3686/7450 cut-off events. For 1825759/1825763 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 61767 event pairs, 468 based on Foata normal form. 2/7289 useless extension candidates. Maximal degree in co-relation 130596. Up to 2691 conditions per place. [2023-08-26 09:13:43,689 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 339 selfloop transitions, 696 changer transitions 10/1051 dead transitions. [2023-08-26 09:13:43,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1051 transitions, 63405 flow [2023-08-26 09:13:43,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 09:13:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 09:13:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3292 transitions. [2023-08-26 09:13:43,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42836694860117114 [2023-08-26 09:13:43,743 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3292 transitions. [2023-08-26 09:13:43,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3292 transitions. [2023-08-26 09:13:43,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:13:43,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3292 transitions. [2023-08-26 09:13:43,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 113.51724137931035) internal successors, (3292), 29 states have internal predecessors, (3292), 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) [2023-08-26 09:13:43,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 265.0) internal successors, (7950), 30 states have internal predecessors, (7950), 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) [2023-08-26 09:13:43,749 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 265.0) internal successors, (7950), 30 states have internal predecessors, (7950), 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) [2023-08-26 09:13:43,749 INFO L175 Difference]: Start difference. First operand has 535 places, 906 transitions, 56378 flow. Second operand 29 states and 3292 transitions. [2023-08-26 09:13:43,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1051 transitions, 63405 flow [2023-08-26 09:13:51,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1051 transitions, 63186 flow, removed 71 selfloop flow, removed 10 redundant places. [2023-08-26 09:13:51,044 INFO L231 Difference]: Finished difference. Result has 561 places, 962 transitions, 62401 flow [2023-08-26 09:13:51,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=56221, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=906, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=645, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=62401, PETRI_PLACES=561, PETRI_TRANSITIONS=962} [2023-08-26 09:13:51,046 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 521 predicate places. [2023-08-26 09:13:51,046 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 962 transitions, 62401 flow [2023-08-26 09:13:51,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.82608695652173) internal successors, (2503), 23 states have internal predecessors, (2503), 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) [2023-08-26 09:13:51,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:13:51,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:13:51,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-26 09:13:51,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-26 09:13:51,255 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:13:51,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:13:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2018071822, now seen corresponding path program 24 times [2023-08-26 09:13:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:13:51,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74066876] [2023-08-26 09:13:51,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:13:51,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:13:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:13:51,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:51,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:13:51,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74066876] [2023-08-26 09:13:51,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74066876] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:13:51,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613441966] [2023-08-26 09:13:51,722 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:13:51,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:13:51,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:13:51,723 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:13:51,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-26 09:13:51,835 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:13:51,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:13:51,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:13:51,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:13:52,145 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:13:52,146 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:14:10,355 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:14:10,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613441966] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:14:10,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:14:10,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:14:10,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930578098] [2023-08-26 09:14:10,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:14:10,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:14:10,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:14:10,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:14:10,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:14:10,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:14:10,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 962 transitions, 62401 flow. Second operand has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:14:10,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:14:10,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:14:10,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:14:19,903 INFO L124 PetriNetUnfolderBase]: 3825/7703 cut-off events. [2023-08-26 09:14:19,903 INFO L125 PetriNetUnfolderBase]: For 2029659/2029667 co-relation queries the response was YES. [2023-08-26 09:14:19,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140306 conditions, 7703 events. 3825/7703 cut-off events. For 2029659/2029667 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 64114 event pairs, 459 based on Foata normal form. 10/7552 useless extension candidates. Maximal degree in co-relation 140146. Up to 2739 conditions per place. [2023-08-26 09:14:20,057 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 334 selfloop transitions, 735 changer transitions 11/1086 dead transitions. [2023-08-26 09:14:20,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1086 transitions, 67521 flow [2023-08-26 09:14:20,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-26 09:14:20,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-26 09:14:20,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3853 transitions. [2023-08-26 09:14:20,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42763596004439514 [2023-08-26 09:14:20,060 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3853 transitions. [2023-08-26 09:14:20,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3853 transitions. [2023-08-26 09:14:20,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:14:20,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3853 transitions. [2023-08-26 09:14:20,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 113.32352941176471) internal successors, (3853), 34 states have internal predecessors, (3853), 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) [2023-08-26 09:14:20,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:14:20,068 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:14:20,069 INFO L175 Difference]: Start difference. First operand has 561 places, 962 transitions, 62401 flow. Second operand 34 states and 3853 transitions. [2023-08-26 09:14:20,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1086 transitions, 67521 flow [2023-08-26 09:14:28,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1086 transitions, 66938 flow, removed 215 selfloop flow, removed 16 redundant places. [2023-08-26 09:14:28,743 INFO L231 Difference]: Finished difference. Result has 582 places, 986 transitions, 66016 flow [2023-08-26 09:14:28,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=61994, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=962, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=712, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=66016, PETRI_PLACES=582, PETRI_TRANSITIONS=986} [2023-08-26 09:14:28,745 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 542 predicate places. [2023-08-26 09:14:28,745 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 986 transitions, 66016 flow [2023-08-26 09:14:28,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:14:28,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:14:28,746 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:14:28,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-26 09:14:28,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:14:28,951 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:14:28,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:14:28,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1712724082, now seen corresponding path program 25 times [2023-08-26 09:14:28,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:14:28,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538621075] [2023-08-26 09:14:28,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:14:28,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:14:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:14:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:14:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:14:29,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538621075] [2023-08-26 09:14:29,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538621075] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:14:29,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911700067] [2023-08-26 09:14:29,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:14:29,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:14:29,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:14:29,404 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:14:29,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-26 09:14:29,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:14:29,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:14:29,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:14:29,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:14:29,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:14:46,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:14:46,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911700067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:14:46,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:14:46,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:14:46,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59883774] [2023-08-26 09:14:46,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:14:46,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:14:46,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:14:46,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:14:46,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:14:46,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:14:46,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 986 transitions, 66016 flow. Second operand has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:14:46,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:14:46,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:14:46,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:14:48,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-26 09:14:54,574 INFO L124 PetriNetUnfolderBase]: 3765/7662 cut-off events. [2023-08-26 09:14:54,574 INFO L125 PetriNetUnfolderBase]: For 2126674/2126678 co-relation queries the response was YES. [2023-08-26 09:14:54,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142045 conditions, 7662 events. 3765/7662 cut-off events. For 2126674/2126678 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 64309 event pairs, 405 based on Foata normal form. 3/7502 useless extension candidates. Maximal degree in co-relation 141880. Up to 3234 conditions per place. [2023-08-26 09:14:54,781 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 392 selfloop transitions, 665 changer transitions 10/1073 dead transitions. [2023-08-26 09:14:54,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1073 transitions, 69506 flow [2023-08-26 09:14:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 09:14:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 09:14:54,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2724 transitions. [2023-08-26 09:14:54,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42830188679245285 [2023-08-26 09:14:54,784 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2724 transitions. [2023-08-26 09:14:54,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2724 transitions. [2023-08-26 09:14:54,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:14:54,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2724 transitions. [2023-08-26 09:14:54,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 113.5) internal successors, (2724), 24 states have internal predecessors, (2724), 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) [2023-08-26 09:14:54,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 265.0) internal successors, (6625), 25 states have internal predecessors, (6625), 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) [2023-08-26 09:14:54,789 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 265.0) internal successors, (6625), 25 states have internal predecessors, (6625), 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) [2023-08-26 09:14:54,789 INFO L175 Difference]: Start difference. First operand has 582 places, 986 transitions, 66016 flow. Second operand 24 states and 2724 transitions. [2023-08-26 09:14:54,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1073 transitions, 69506 flow [2023-08-26 09:15:03,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1073 transitions, 69180 flow, removed 92 selfloop flow, removed 19 redundant places. [2023-08-26 09:15:03,661 INFO L231 Difference]: Finished difference. Result has 591 places, 996 transitions, 68977 flow [2023-08-26 09:15:03,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=65692, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=986, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=68977, PETRI_PLACES=591, PETRI_TRANSITIONS=996} [2023-08-26 09:15:03,662 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 551 predicate places. [2023-08-26 09:15:03,662 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 996 transitions, 68977 flow [2023-08-26 09:15:03,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.91304347826087) internal successors, (2505), 23 states have internal predecessors, (2505), 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) [2023-08-26 09:15:03,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:03,662 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:03,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-26 09:15:03,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:03,863 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:15:03,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:03,863 INFO L85 PathProgramCache]: Analyzing trace with hash 18680762, now seen corresponding path program 26 times [2023-08-26 09:15:03,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:03,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537052445] [2023-08-26 09:15:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:03,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:03,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:04,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:04,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537052445] [2023-08-26 09:15:04,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537052445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:04,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912475918] [2023-08-26 09:15:04,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:15:04,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:04,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:15:04,387 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:15:04,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-26 09:15:04,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:15:04,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:15:04,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:15:04,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:15:04,754 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:04,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:15:33,050 WARN L234 SmtUtils]: Spent 14.44s on a formula simplification. DAG size of input: 127 DAG size of output: 79 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:15:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:36,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912475918] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:15:36,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:15:36,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:15:36,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981579261] [2023-08-26 09:15:36,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:15:36,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:15:36,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:15:36,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:15:36,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:15:36,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:15:36,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 996 transitions, 68977 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:15:36,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:15:36,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:15:36,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:15:46,544 INFO L124 PetriNetUnfolderBase]: 3995/8069 cut-off events. [2023-08-26 09:15:46,544 INFO L125 PetriNetUnfolderBase]: For 2436851/2436862 co-relation queries the response was YES. [2023-08-26 09:15:46,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155510 conditions, 8069 events. 3995/8069 cut-off events. For 2436851/2436862 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 67966 event pairs, 478 based on Foata normal form. 12/7914 useless extension candidates. Maximal degree in co-relation 155342. Up to 2963 conditions per place. [2023-08-26 09:15:46,693 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 381 selfloop transitions, 747 changer transitions 10/1144 dead transitions. [2023-08-26 09:15:46,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1144 transitions, 76410 flow [2023-08-26 09:15:46,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 09:15:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 09:15:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3611 transitions. [2023-08-26 09:15:46,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258254716981132 [2023-08-26 09:15:46,700 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3611 transitions. [2023-08-26 09:15:46,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3611 transitions. [2023-08-26 09:15:46,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:15:46,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3611 transitions. [2023-08-26 09:15:46,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 112.84375) internal successors, (3611), 32 states have internal predecessors, (3611), 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) [2023-08-26 09:15:46,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 265.0) internal successors, (8745), 33 states have internal predecessors, (8745), 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) [2023-08-26 09:15:46,707 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 265.0) internal successors, (8745), 33 states have internal predecessors, (8745), 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) [2023-08-26 09:15:46,707 INFO L175 Difference]: Start difference. First operand has 591 places, 996 transitions, 68977 flow. Second operand 32 states and 3611 transitions. [2023-08-26 09:15:46,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 1144 transitions, 76410 flow [2023-08-26 09:15:57,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1144 transitions, 76160 flow, removed 56 selfloop flow, removed 18 redundant places. [2023-08-26 09:15:57,182 INFO L231 Difference]: Finished difference. Result has 611 places, 1053 transitions, 75692 flow [2023-08-26 09:15:57,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=68785, PETRI_DIFFERENCE_MINUEND_PLACES=572, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=996, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=694, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=75692, PETRI_PLACES=611, PETRI_TRANSITIONS=1053} [2023-08-26 09:15:57,183 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 571 predicate places. [2023-08-26 09:15:57,184 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 1053 transitions, 75692 flow [2023-08-26 09:15:57,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:15:57,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:15:57,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:15:57,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-26 09:15:57,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-26 09:15:57,385 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:15:57,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:15:57,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1833619580, now seen corresponding path program 27 times [2023-08-26 09:15:57,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:15:57,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104624322] [2023-08-26 09:15:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:15:57,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:15:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:15:57,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:57,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:15:57,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104624322] [2023-08-26 09:15:57,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104624322] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:15:57,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169854398] [2023-08-26 09:15:57,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:15:57,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:15:57,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:15:57,807 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:15:57,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-26 09:15:57,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-26 09:15:57,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:15:57,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:15:57,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:15:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:15:58,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:16:15,594 WARN L234 SmtUtils]: Spent 6.96s on a formula simplification. DAG size of input: 113 DAG size of output: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:16:16,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:16:16,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169854398] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:16:16,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:16:16,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:16:16,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837135851] [2023-08-26 09:16:16,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:16:16,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:16:16,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:16:16,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:16:16,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:16:16,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:16:16,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 1053 transitions, 75692 flow. Second operand has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:16:16,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:16:16,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:16:16,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:16:30,426 INFO L124 PetriNetUnfolderBase]: 4020/8202 cut-off events. [2023-08-26 09:16:30,427 INFO L125 PetriNetUnfolderBase]: For 2637223/2637227 co-relation queries the response was YES. [2023-08-26 09:16:30,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161754 conditions, 8202 events. 4020/8202 cut-off events. For 2637223/2637227 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 69697 event pairs, 458 based on Foata normal form. 7/8037 useless extension candidates. Maximal degree in co-relation 161580. Up to 3075 conditions per place. [2023-08-26 09:16:30,593 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 364 selfloop transitions, 792 changer transitions 11/1173 dead transitions. [2023-08-26 09:16:30,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 1173 transitions, 80484 flow [2023-08-26 09:16:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-26 09:16:30,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-26 09:16:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3844 transitions. [2023-08-26 09:16:30,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42663706992230854 [2023-08-26 09:16:30,596 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3844 transitions. [2023-08-26 09:16:30,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3844 transitions. [2023-08-26 09:16:30,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:16:30,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3844 transitions. [2023-08-26 09:16:30,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 113.05882352941177) internal successors, (3844), 34 states have internal predecessors, (3844), 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) [2023-08-26 09:16:30,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:16:30,605 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:16:30,605 INFO L175 Difference]: Start difference. First operand has 611 places, 1053 transitions, 75692 flow. Second operand 34 states and 3844 transitions. [2023-08-26 09:16:30,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 1173 transitions, 80484 flow [2023-08-26 09:16:41,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 1173 transitions, 80229 flow, removed 75 selfloop flow, removed 11 redundant places. [2023-08-26 09:16:41,538 INFO L231 Difference]: Finished difference. Result has 634 places, 1073 transitions, 79552 flow [2023-08-26 09:16:41,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=75421, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1052, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=772, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=79552, PETRI_PLACES=634, PETRI_TRANSITIONS=1073} [2023-08-26 09:16:41,539 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 594 predicate places. [2023-08-26 09:16:41,539 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 1073 transitions, 79552 flow [2023-08-26 09:16:41,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:16:41,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:16:41,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:16:41,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-26 09:16:41,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-26 09:16:41,740 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:16:41,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:16:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 23643812, now seen corresponding path program 28 times [2023-08-26 09:16:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:16:41,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621908721] [2023-08-26 09:16:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:16:41,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:16:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:16:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:16:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:16:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621908721] [2023-08-26 09:16:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621908721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:16:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175427936] [2023-08-26 09:16:42,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:16:42,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:16:42,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:16:42,146 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:16:42,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-26 09:16:42,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:16:42,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:16:42,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:16:42,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:16:42,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:16:42,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:17:03,576 WARN L234 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 124 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:17:06,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:17:06,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175427936] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:17:06,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:17:06,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:17:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370159623] [2023-08-26 09:17:06,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:17:06,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:17:06,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:17:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:17:06,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:17:06,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:17:06,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 1073 transitions, 79552 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:17:06,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:17:06,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:17:06,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:17:09,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:17:18,973 INFO L124 PetriNetUnfolderBase]: 4235/8580 cut-off events. [2023-08-26 09:17:18,973 INFO L125 PetriNetUnfolderBase]: For 2967872/2967880 co-relation queries the response was YES. [2023-08-26 09:17:19,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176021 conditions, 8580 events. 4235/8580 cut-off events. For 2967872/2967880 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 73330 event pairs, 328 based on Foata normal form. 10/8414 useless extension candidates. Maximal degree in co-relation 175842. Up to 2801 conditions per place. [2023-08-26 09:17:19,146 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 367 selfloop transitions, 844 changer transitions 7/1224 dead transitions. [2023-08-26 09:17:19,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 1224 transitions, 88333 flow [2023-08-26 09:17:19,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-26 09:17:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-26 09:17:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3727 transitions. [2023-08-26 09:17:19,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261863922241281 [2023-08-26 09:17:19,149 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3727 transitions. [2023-08-26 09:17:19,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3727 transitions. [2023-08-26 09:17:19,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:17:19,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3727 transitions. [2023-08-26 09:17:19,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 112.93939393939394) internal successors, (3727), 33 states have internal predecessors, (3727), 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) [2023-08-26 09:17:19,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 265.0) internal successors, (9010), 34 states have internal predecessors, (9010), 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) [2023-08-26 09:17:19,158 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 265.0) internal successors, (9010), 34 states have internal predecessors, (9010), 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) [2023-08-26 09:17:19,158 INFO L175 Difference]: Start difference. First operand has 634 places, 1073 transitions, 79552 flow. Second operand 33 states and 3727 transitions. [2023-08-26 09:17:19,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 1224 transitions, 88333 flow [2023-08-26 09:17:32,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 1224 transitions, 88040 flow, removed 42 selfloop flow, removed 29 redundant places. [2023-08-26 09:17:32,207 INFO L231 Difference]: Finished difference. Result has 642 places, 1131 transitions, 87735 flow [2023-08-26 09:17:32,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=79285, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=789, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=87735, PETRI_PLACES=642, PETRI_TRANSITIONS=1131} [2023-08-26 09:17:32,208 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 602 predicate places. [2023-08-26 09:17:32,208 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 1131 transitions, 87735 flow [2023-08-26 09:17:32,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:17:32,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:17:32,209 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:17:32,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-26 09:17:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-26 09:17:32,409 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:17:32,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:17:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash 263196676, now seen corresponding path program 29 times [2023-08-26 09:17:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:17:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352309943] [2023-08-26 09:17:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:17:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:17:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:17:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:17:32,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:17:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352309943] [2023-08-26 09:17:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352309943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:17:32,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324826216] [2023-08-26 09:17:32,870 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:17:32,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:17:32,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:17:32,871 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:17:32,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-26 09:17:32,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:17:32,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:17:32,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:17:32,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:17:33,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:17:33,260 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:17:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:17:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324826216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:17:47,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:17:47,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:17:47,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520721543] [2023-08-26 09:17:47,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:17:47,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:17:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:17:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:17:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:17:47,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:17:47,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 1131 transitions, 87735 flow. Second operand has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:17:47,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:17:47,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:17:47,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:17:50,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-26 09:17:55,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-26 09:18:01,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:18:05,473 INFO L124 PetriNetUnfolderBase]: 4296/8764 cut-off events. [2023-08-26 09:18:05,473 INFO L125 PetriNetUnfolderBase]: For 3288181/3288185 co-relation queries the response was YES. [2023-08-26 09:18:05,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185747 conditions, 8764 events. 4296/8764 cut-off events. For 3288181/3288185 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 75312 event pairs, 340 based on Foata normal form. 7/8599 useless extension candidates. Maximal degree in co-relation 185565. Up to 2906 conditions per place. [2023-08-26 09:18:05,663 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 414 selfloop transitions, 804 changer transitions 11/1235 dead transitions. [2023-08-26 09:18:05,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 1235 transitions, 92656 flow [2023-08-26 09:18:05,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 09:18:05,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 09:18:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3381 transitions. [2023-08-26 09:18:05,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252830188679245 [2023-08-26 09:18:05,665 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3381 transitions. [2023-08-26 09:18:05,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3381 transitions. [2023-08-26 09:18:05,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:18:05,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3381 transitions. [2023-08-26 09:18:05,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 112.7) internal successors, (3381), 30 states have internal predecessors, (3381), 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) [2023-08-26 09:18:05,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 265.0) internal successors, (8215), 31 states have internal predecessors, (8215), 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) [2023-08-26 09:18:05,671 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 265.0) internal successors, (8215), 31 states have internal predecessors, (8215), 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) [2023-08-26 09:18:05,671 INFO L175 Difference]: Start difference. First operand has 642 places, 1131 transitions, 87735 flow. Second operand 30 states and 3381 transitions. [2023-08-26 09:18:05,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 1235 transitions, 92656 flow [2023-08-26 09:18:20,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 1235 transitions, 92266 flow, removed 111 selfloop flow, removed 27 redundant places. [2023-08-26 09:18:20,906 INFO L231 Difference]: Finished difference. Result has 648 places, 1153 transitions, 91691 flow [2023-08-26 09:18:20,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=87361, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=783, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=91691, PETRI_PLACES=648, PETRI_TRANSITIONS=1153} [2023-08-26 09:18:20,907 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 608 predicate places. [2023-08-26 09:18:20,907 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 1153 transitions, 91691 flow [2023-08-26 09:18:20,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.9090909090909) internal successors, (2396), 22 states have internal predecessors, (2396), 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) [2023-08-26 09:18:20,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:18:20,908 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:18:20,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-26 09:18:21,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-26 09:18:21,109 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:18:21,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:18:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1425785070, now seen corresponding path program 30 times [2023-08-26 09:18:21,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:18:21,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014941970] [2023-08-26 09:18:21,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:18:21,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:18:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:18:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:18:21,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:18:21,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014941970] [2023-08-26 09:18:21,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014941970] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:18:21,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128012823] [2023-08-26 09:18:21,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:18:21,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:18:21,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:18:21,509 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:18:21,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-26 09:18:21,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:18:21,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:18:21,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:18:21,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:18:21,886 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:18:21,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:18:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:18:34,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128012823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:18:34,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:18:34,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-26 09:18:34,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846840307] [2023-08-26 09:18:34,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:18:34,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 09:18:34,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:18:34,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 09:18:34,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-08-26 09:18:34,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:18:34,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 1153 transitions, 91691 flow. Second operand has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:18:34,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:18:34,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:18:34,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:18:43,727 INFO L124 PetriNetUnfolderBase]: 4311/8814 cut-off events. [2023-08-26 09:18:43,727 INFO L125 PetriNetUnfolderBase]: For 3441944/3441952 co-relation queries the response was YES. [2023-08-26 09:18:43,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190284 conditions, 8814 events. 4311/8814 cut-off events. For 3441944/3441952 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 75842 event pairs, 384 based on Foata normal form. 10/8648 useless extension candidates. Maximal degree in co-relation 190107. Up to 4308 conditions per place. [2023-08-26 09:18:43,911 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 436 selfloop transitions, 764 changer transitions 7/1213 dead transitions. [2023-08-26 09:18:43,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 1213 transitions, 94771 flow [2023-08-26 09:18:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-26 09:18:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-26 09:18:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2815 transitions. [2023-08-26 09:18:43,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249056603773585 [2023-08-26 09:18:43,913 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2815 transitions. [2023-08-26 09:18:43,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2815 transitions. [2023-08-26 09:18:43,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:18:43,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2815 transitions. [2023-08-26 09:18:43,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 112.6) internal successors, (2815), 25 states have internal predecessors, (2815), 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) [2023-08-26 09:18:43,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 265.0) internal successors, (6890), 26 states have internal predecessors, (6890), 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) [2023-08-26 09:18:43,921 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 265.0) internal successors, (6890), 26 states have internal predecessors, (6890), 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) [2023-08-26 09:18:43,921 INFO L175 Difference]: Start difference. First operand has 648 places, 1153 transitions, 91691 flow. Second operand 25 states and 2815 transitions. [2023-08-26 09:18:43,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 1213 transitions, 94771 flow [2023-08-26 09:18:59,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 1213 transitions, 94459 flow, removed 85 selfloop flow, removed 21 redundant places. [2023-08-26 09:18:59,510 INFO L231 Difference]: Finished difference. Result has 654 places, 1155 transitions, 94131 flow [2023-08-26 09:18:59,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=91415, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=762, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=94131, PETRI_PLACES=654, PETRI_TRANSITIONS=1155} [2023-08-26 09:18:59,511 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 614 predicate places. [2023-08-26 09:18:59,511 INFO L495 AbstractCegarLoop]: Abstraction has has 654 places, 1155 transitions, 94131 flow [2023-08-26 09:18:59,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 108.81818181818181) internal successors, (2394), 22 states have internal predecessors, (2394), 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) [2023-08-26 09:18:59,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:18:59,512 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:18:59,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-26 09:18:59,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:18:59,713 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:18:59,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:18:59,713 INFO L85 PathProgramCache]: Analyzing trace with hash -9314002, now seen corresponding path program 31 times [2023-08-26 09:18:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:18:59,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839650759] [2023-08-26 09:18:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:18:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:18:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:19:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:19:00,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:19:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839650759] [2023-08-26 09:19:00,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839650759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:19:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532240286] [2023-08-26 09:19:00,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:19:00,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:19:00,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:19:00,337 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:19:00,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-26 09:19:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:19:00,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:19:00,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:19:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:19:00,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:19:16,793 WARN L234 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 115 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:19:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:19:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532240286] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:19:21,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:19:21,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-26 09:19:21,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706728970] [2023-08-26 09:19:21,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:19:21,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:19:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:19:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:19:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:19:21,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-26 09:19:21,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 1155 transitions, 94131 flow. Second operand has 23 states, 23 states have (on average 108.78260869565217) internal successors, (2502), 23 states have internal predecessors, (2502), 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) [2023-08-26 09:19:21,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:19:21,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-26 09:19:21,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:19:35,551 INFO L124 PetriNetUnfolderBase]: 4592/9327 cut-off events. [2023-08-26 09:19:35,551 INFO L125 PetriNetUnfolderBase]: For 3880193/3880201 co-relation queries the response was YES. [2023-08-26 09:19:35,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207792 conditions, 9327 events. 4592/9327 cut-off events. For 3880193/3880201 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 80720 event pairs, 370 based on Foata normal form. 10/9161 useless extension candidates. Maximal degree in co-relation 207612. Up to 2979 conditions per place. [2023-08-26 09:19:35,828 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 436 selfloop transitions, 887 changer transitions 10/1339 dead transitions. [2023-08-26 09:19:35,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 1339 transitions, 105260 flow [2023-08-26 09:19:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-26 09:19:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-26 09:19:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3839 transitions. [2023-08-26 09:19:35,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4260821309655938 [2023-08-26 09:19:35,831 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3839 transitions. [2023-08-26 09:19:35,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3839 transitions. [2023-08-26 09:19:35,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:19:35,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3839 transitions. [2023-08-26 09:19:35,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 112.91176470588235) internal successors, (3839), 34 states have internal predecessors, (3839), 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) [2023-08-26 09:19:35,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:19:35,838 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 265.0) internal successors, (9275), 35 states have internal predecessors, (9275), 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) [2023-08-26 09:19:35,838 INFO L175 Difference]: Start difference. First operand has 654 places, 1155 transitions, 94131 flow. Second operand 34 states and 3839 transitions. [2023-08-26 09:19:35,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 1339 transitions, 105260 flow [2023-08-26 09:19:53,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 1339 transitions, 105108 flow, removed 6 selfloop flow, removed 18 redundant places. [2023-08-26 09:19:53,755 INFO L231 Difference]: Finished difference. Result has 681 places, 1242 transitions, 104214 flow [2023-08-26 09:19:53,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=93990, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=804, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=104214, PETRI_PLACES=681, PETRI_TRANSITIONS=1242} [2023-08-26 09:19:53,756 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 641 predicate places. [2023-08-26 09:19:53,756 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 1242 transitions, 104214 flow [2023-08-26 09:19:53,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 108.78260869565217) internal successors, (2502), 23 states have internal predecessors, (2502), 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) [2023-08-26 09:19:53,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:19:53,757 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:19:53,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-26 09:19:53,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-08-26 09:19:53,958 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 09:19:53,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:19:53,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1697585538, now seen corresponding path program 32 times [2023-08-26 09:19:53,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:19:53,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245181818] [2023-08-26 09:19:53,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:19:53,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:19:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:19:54,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:19:54,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:19:54,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245181818] [2023-08-26 09:19:54,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245181818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:19:54,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441203389] [2023-08-26 09:19:54,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:19:54,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:19:54,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:19:54,415 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:19:54,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-26 09:19:54,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:19:54,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:19:54,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:19:54,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:19:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:19:54,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2023-08-26 09:19:59,174 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 09:19:59,190 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 [2023-08-26 09:19:59,219 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-26 09:19:59,222 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (24 of 25 remaining) [2023-08-26 09:19:59,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-26 09:19:59,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-26 09:19:59,423 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-26 09:19:59,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-26 09:19:59,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-26 09:19:59,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-26 09:19:59,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-26 09:19:59,426 INFO L445 BasicCegarLoop]: Path program histogram: [32, 4, 3, 1, 1, 1, 1] [2023-08-26 09:19:59,429 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 09:19:59,429 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 09:19:59,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:19:59 BasicIcfg [2023-08-26 09:19:59,431 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 09:19:59,432 INFO L158 Benchmark]: Toolchain (without parser) took 830178.76ms. Allocated memory was 364.9MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 341.6MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 3.0GB. Max. memory is 16.0GB. [2023-08-26 09:19:59,432 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 364.9MB. Free memory was 341.7MB in the beginning and 341.5MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:19:59,432 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.93ms. Allocated memory is still 364.9MB. Free memory was 340.8MB in the beginning and 330.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-26 09:19:59,432 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.23ms. Allocated memory is still 364.9MB. Free memory was 330.3MB in the beginning and 328.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:19:59,432 INFO L158 Benchmark]: Boogie Preprocessor took 35.33ms. Allocated memory is still 364.9MB. Free memory was 328.2MB in the beginning and 326.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:19:59,433 INFO L158 Benchmark]: RCFGBuilder took 460.69ms. Allocated memory is still 364.9MB. Free memory was 326.9MB in the beginning and 311.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 09:19:59,433 INFO L158 Benchmark]: TraceAbstraction took 829432.62ms. Allocated memory was 364.9MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 310.9MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2023-08-26 09:19:59,434 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 364.9MB. Free memory was 341.7MB in the beginning and 341.5MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 197.93ms. Allocated memory is still 364.9MB. Free memory was 340.8MB in the beginning and 330.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.23ms. Allocated memory is still 364.9MB. Free memory was 330.3MB in the beginning and 328.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.33ms. Allocated memory is still 364.9MB. Free memory was 328.2MB in the beginning and 326.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 460.69ms. Allocated memory is still 364.9MB. Free memory was 326.9MB in the beginning and 311.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 829432.62ms. Allocated memory was 364.9MB in the beginning and 4.9GB in the end (delta: 4.6GB). Free memory was 310.9MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 127 PlacesBefore, 40 PlacesAfterwards, 125 TransitionsBefore, 37 TransitionsAfterwards, 2900 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 129 TotalNumberOfCompositions, 6436 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3663, independent: 3484, independent conditional: 0, independent unconditional: 3484, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1692, independent: 1658, independent conditional: 0, independent unconditional: 1658, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3663, independent: 1826, independent conditional: 0, independent unconditional: 1826, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 1692, unknown conditional: 0, unknown unconditional: 1692] , Statistics on independence cache: Total cache size (in pairs): 138, Positive cache size: 120, Positive conditional cache size: 0, Positive unconditional cache size: 120, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 42]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 62]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 8 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 182 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 829.3s, OverallIterations: 43, TraceHistogramMax: 3, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.0s, AutomataDifference: 414.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 3740 SdHoareTripleChecker+Valid, 115.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3740 mSDsluCounter, 737 SdHoareTripleChecker+Invalid, 109.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 581 mSDsCounter, 893 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32753 IncrementalHoareTripleChecker+Invalid, 33651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 893 mSolverCounterUnsat, 156 mSDtfsCounter, 32753 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2392 GetRequests, 1098 SyntacticMatches, 126 SemanticMatches, 1168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13143 ImplicationChecksByTransitivity, 237.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104214occurred in iteration=42, InterpolantAutomatonStates: 1008, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 393.9s InterpolantComputationTime, 1728 NumberOfCodeBlocks, 1728 NumberOfCodeBlocksAsserted, 117 NumberOfCheckSat, 2460 ConstructedInterpolants, 3 QuantifiedInterpolants, 93459 SizeOfPredicates, 152 NumberOfNonLiveVariables, 6294 ConjunctsInSsa, 893 ConjunctsInUnsatCore, 118 InterpolantComputations, 4 PerfectInterpolantSequences, 2/432 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown