/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 05:21:13,929 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 05:21:14,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 05:21:14,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 05:21:14,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 05:21:14,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 05:21:14,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 05:21:14,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 05:21:14,056 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 05:21:14,064 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 05:21:14,064 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 05:21:14,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 05:21:14,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 05:21:14,066 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 05:21:14,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 05:21:14,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 05:21:14,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 05:21:14,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 05:21:14,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 05:21:14,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 05:21:14,068 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 05:21:14,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 05:21:14,068 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 05:21:14,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 05:21:14,069 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 05:21:14,069 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 05:21:14,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 05:21:14,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:21:14,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 05:21:14,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 05:21:14,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 05:21:14,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 05:21:14,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 05:21:14,072 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 05:21:14,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 05:21:14,072 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 05:21:14,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 05:21:14,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 05:21:14,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 05:21:14,425 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 05:21:14,425 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 05:21:14,427 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-08-25 05:21:15,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 05:21:15,821 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 05:21:15,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-08-25 05:21:15,829 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa692c135/748ac9162cb54ad58c320c66c83339ea/FLAG24e8ecad3 [2023-08-25 05:21:15,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa692c135/748ac9162cb54ad58c320c66c83339ea [2023-08-25 05:21:15,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 05:21:15,852 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 05:21:15,855 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 05:21:15,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 05:21:15,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 05:21:15,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:21:15" (1/1) ... [2023-08-25 05:21:15,860 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412311f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:15, skipping insertion in model container [2023-08-25 05:21:15,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 05:21:15" (1/1) ... [2023-08-25 05:21:15,883 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 05:21:16,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:21:16,058 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 05:21:16,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 05:21:16,111 INFO L206 MainTranslator]: Completed translation [2023-08-25 05:21:16,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16 WrapperNode [2023-08-25 05:21:16,111 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 05:21:16,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 05:21:16,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 05:21:16,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 05:21:16,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,135 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,162 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 78 [2023-08-25 05:21:16,162 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 05:21:16,163 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 05:21:16,163 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 05:21:16,163 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 05:21:16,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,196 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,198 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,200 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,202 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 05:21:16,202 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 05:21:16,203 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 05:21:16,203 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 05:21:16,203 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (1/1) ... [2023-08-25 05:21:16,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 05:21:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:16,238 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 05:21:16,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 05:21:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 05:21:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 05:21:16,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 05:21:16,277 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 05:21:16,277 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 05:21:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 05:21:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 05:21:16,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 05:21:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 05:21:16,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 05:21:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 05:21:16,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 05:21:16,280 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 05:21:16,387 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 05:21:16,389 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 05:21:16,693 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 05:21:16,700 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 05:21:16,700 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 05:21:16,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:21:16 BoogieIcfgContainer [2023-08-25 05:21:16,702 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 05:21:16,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 05:21:16,708 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 05:21:16,711 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 05:21:16,711 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 05:21:15" (1/3) ... [2023-08-25 05:21:16,712 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ee2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:21:16, skipping insertion in model container [2023-08-25 05:21:16,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 05:21:16" (2/3) ... [2023-08-25 05:21:16,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@194ee2ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 05:21:16, skipping insertion in model container [2023-08-25 05:21:16,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 05:21:16" (3/3) ... [2023-08-25 05:21:16,714 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2023-08-25 05:21:16,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 05:21:16,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2023-08-25 05:21:16,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 05:21:16,808 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 05:21:16,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 136 transitions, 288 flow [2023-08-25 05:21:16,940 INFO L124 PetriNetUnfolderBase]: 5/134 cut-off events. [2023-08-25 05:21:16,941 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 05:21:16,946 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. [2023-08-25 05:21:16,946 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 136 transitions, 288 flow [2023-08-25 05:21:16,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 125 transitions, 262 flow [2023-08-25 05:21:16,960 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 05:21:16,974 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 125 transitions, 262 flow [2023-08-25 05:21:16,995 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 125 transitions, 262 flow [2023-08-25 05:21:16,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 125 transitions, 262 flow [2023-08-25 05:21:17,035 INFO L124 PetriNetUnfolderBase]: 5/125 cut-off events. [2023-08-25 05:21:17,035 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 05:21:17,037 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. [2023-08-25 05:21:17,039 INFO L119 LiptonReduction]: Number of co-enabled transitions 2900 [2023-08-25 05:21:19,640 INFO L134 LiptonReduction]: Checked pairs total: 6436 [2023-08-25 05:21:19,641 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-25 05:21:19,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 05:21:19,659 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;@442d667d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 05:21:19,659 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-25 05:21:19,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 05:21:19,661 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 05:21:19,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 05:21:19,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:19,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 05:21:19,662 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)] === [2023-08-25 05:21:19,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash 501, now seen corresponding path program 1 times [2023-08-25 05:21:19,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:19,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493540876] [2023-08-25 05:21:19,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:19,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:19,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:19,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493540876] [2023-08-25 05:21:19,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493540876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:21:19,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:21:19,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 05:21:19,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301521679] [2023-08-25 05:21:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:21:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 05:21:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 05:21:19,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 05:21:19,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 265 [2023-08-25 05:21:19,788 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) [2023-08-25 05:21:19,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:19,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 265 [2023-08-25 05:21:19,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:19,854 INFO L124 PetriNetUnfolderBase]: 90/195 cut-off events. [2023-08-25 05:21:19,854 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-25 05:21:19,857 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. [2023-08-25 05:21:19,860 INFO L140 encePairwiseOnDemand]: 253/265 looper letters, 16 selfloop transitions, 0 changer transitions 0/25 dead transitions. [2023-08-25 05:21:19,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 94 flow [2023-08-25 05:21:19,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 05:21:19,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 05:21:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 284 transitions. [2023-08-25 05:21:19,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5358490566037736 [2023-08-25 05:21:19,881 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 284 transitions. [2023-08-25 05:21:19,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 284 transitions. [2023-08-25 05:21:19,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:19,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 284 transitions. [2023-08-25 05:21:19,891 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) [2023-08-25 05:21:19,896 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) [2023-08-25 05:21:19,897 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) [2023-08-25 05:21:19,899 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 86 flow. Second operand 2 states and 284 transitions. [2023-08-25 05:21:19,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 94 flow [2023-08-25 05:21:19,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 86 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 05:21:19,902 INFO L231 Difference]: Finished difference. Result has 27 places, 25 transitions, 54 flow [2023-08-25 05:21:19,904 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} [2023-08-25 05:21:19,909 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -13 predicate places. [2023-08-25 05:21:19,909 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 25 transitions, 54 flow [2023-08-25 05:21:19,910 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) [2023-08-25 05:21:19,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:19,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 05:21:19,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 05:21:19,910 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:19,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash 479687787, now seen corresponding path program 1 times [2023-08-25 05:21:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:19,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121413536] [2023-08-25 05:21:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:20,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:20,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121413536] [2023-08-25 05:21:20,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121413536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:21:20,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:21:20,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:21:20,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910154053] [2023-08-25 05:21:20,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:21:20,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:21:20,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:20,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:21:20,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:21:20,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 265 [2023-08-25 05:21:20,016 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) [2023-08-25 05:21:20,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:20,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 265 [2023-08-25 05:21:20,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:20,087 INFO L124 PetriNetUnfolderBase]: 112/229 cut-off events. [2023-08-25 05:21:20,087 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-25 05:21:20,087 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. [2023-08-25 05:21:20,090 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 22 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2023-08-25 05:21:20,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 30 transitions, 113 flow [2023-08-25 05:21:20,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:21:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:21:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-08-25 05:21:20,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817610062893082 [2023-08-25 05:21:20,093 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-08-25 05:21:20,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-08-25 05:21:20,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:20,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-08-25 05:21:20,095 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) [2023-08-25 05:21:20,100 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) [2023-08-25 05:21:20,101 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) [2023-08-25 05:21:20,101 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 54 flow. Second operand 3 states and 383 transitions. [2023-08-25 05:21:20,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 30 transitions, 113 flow [2023-08-25 05:21:20,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 30 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:21:20,103 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 64 flow [2023-08-25 05:21:20,103 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} [2023-08-25 05:21:20,104 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -12 predicate places. [2023-08-25 05:21:20,104 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 64 flow [2023-08-25 05:21:20,105 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) [2023-08-25 05:21:20,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:20,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:20,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 05:21:20,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:20,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1418591592, now seen corresponding path program 1 times [2023-08-25 05:21:20,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:20,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86539385] [2023-08-25 05:21:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:20,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:20,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86539385] [2023-08-25 05:21:20,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86539385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:21:20,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:21:20,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 05:21:20,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433089394] [2023-08-25 05:21:20,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:21:20,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:21:20,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:21:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:21:20,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 265 [2023-08-25 05:21:20,147 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) [2023-08-25 05:21:20,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:20,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 265 [2023-08-25 05:21:20,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:20,202 INFO L124 PetriNetUnfolderBase]: 155/275 cut-off events. [2023-08-25 05:21:20,202 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-25 05:21:20,203 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. [2023-08-25 05:21:20,204 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 26 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-25 05:21:20,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 32 transitions, 136 flow [2023-08-25 05:21:20,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:21:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:21:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 386 transitions. [2023-08-25 05:21:20,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48553459119496856 [2023-08-25 05:21:20,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 386 transitions. [2023-08-25 05:21:20,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 386 transitions. [2023-08-25 05:21:20,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:20,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 386 transitions. [2023-08-25 05:21:20,207 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) [2023-08-25 05:21:20,209 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) [2023-08-25 05:21:20,209 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) [2023-08-25 05:21:20,209 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 64 flow. Second operand 3 states and 386 transitions. [2023-08-25 05:21:20,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 32 transitions, 136 flow [2023-08-25 05:21:20,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:21:20,211 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 74 flow [2023-08-25 05:21:20,211 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} [2023-08-25 05:21:20,212 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -11 predicate places. [2023-08-25 05:21:20,212 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 74 flow [2023-08-25 05:21:20,213 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) [2023-08-25 05:21:20,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:20,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:20,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 05:21:20,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:20,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1259350516, now seen corresponding path program 1 times [2023-08-25 05:21:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172904917] [2023-08-25 05:21:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:20,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:20,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:20,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172904917] [2023-08-25 05:21:20,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172904917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 05:21:20,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 05:21:20,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 05:21:20,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940978853] [2023-08-25 05:21:20,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 05:21:20,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 05:21:20,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 05:21:20,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 05:21:20,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 265 [2023-08-25 05:21:20,629 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) [2023-08-25 05:21:20,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:20,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 265 [2023-08-25 05:21:20,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:20,694 INFO L124 PetriNetUnfolderBase]: 155/307 cut-off events. [2023-08-25 05:21:20,694 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-08-25 05:21:20,694 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. [2023-08-25 05:21:20,695 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 26 selfloop transitions, 3 changer transitions 1/38 dead transitions. [2023-08-25 05:21:20,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 165 flow [2023-08-25 05:21:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 05:21:20,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 05:21:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-25 05:21:20,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018867924528302 [2023-08-25 05:21:20,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-25 05:21:20,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-25 05:21:20,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:20,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-25 05:21:20,699 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) [2023-08-25 05:21:20,701 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) [2023-08-25 05:21:20,701 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) [2023-08-25 05:21:20,702 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 74 flow. Second operand 3 states and 399 transitions. [2023-08-25 05:21:20,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 165 flow [2023-08-25 05:21:20,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 165 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 05:21:20,705 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 93 flow [2023-08-25 05:21:20,705 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} [2023-08-25 05:21:20,707 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -8 predicate places. [2023-08-25 05:21:20,707 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 93 flow [2023-08-25 05:21:20,707 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) [2023-08-25 05:21:20,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:20,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:20,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 05:21:20,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:20,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:20,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1120298337, now seen corresponding path program 1 times [2023-08-25 05:21:20,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:20,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419731112] [2023-08-25 05:21:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:20,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:21,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:21,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419731112] [2023-08-25 05:21:21,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419731112] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:21,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364730468] [2023-08-25 05:21:21,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:21,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:21,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:21,076 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:21:21,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 05:21:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:21,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 05:21:21,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:21,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:21,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:21,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364730468] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:21,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:21,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-08-25 05:21:21,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052709068] [2023-08-25 05:21:21,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:21,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:21:21,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:21,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:21:21,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:21:21,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-25 05:21:21,683 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) [2023-08-25 05:21:21,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:21,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-25 05:21:21,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:21,912 INFO L124 PetriNetUnfolderBase]: 201/410 cut-off events. [2023-08-25 05:21:21,912 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2023-08-25 05:21:21,914 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. [2023-08-25 05:21:21,915 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 33 selfloop transitions, 5 changer transitions 27/71 dead transitions. [2023-08-25 05:21:21,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 341 flow [2023-08-25 05:21:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:21:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:21:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 828 transitions. [2023-08-25 05:21:21,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463611859838275 [2023-08-25 05:21:21,918 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 828 transitions. [2023-08-25 05:21:21,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 828 transitions. [2023-08-25 05:21:21,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:21,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 828 transitions. [2023-08-25 05:21:21,921 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) [2023-08-25 05:21:21,924 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) [2023-08-25 05:21:21,925 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) [2023-08-25 05:21:21,925 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 93 flow. Second operand 7 states and 828 transitions. [2023-08-25 05:21:21,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 341 flow [2023-08-25 05:21:21,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 335 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 05:21:21,928 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 122 flow [2023-08-25 05:21:21,928 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} [2023-08-25 05:21:21,928 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-25 05:21:21,929 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 122 flow [2023-08-25 05:21:21,930 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) [2023-08-25 05:21:21,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:21,930 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:21,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:22,135 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 [2023-08-25 05:21:22,135 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:22,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash -921504487, now seen corresponding path program 1 times [2023-08-25 05:21:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343069973] [2023-08-25 05:21:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:22,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:22,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:22,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343069973] [2023-08-25 05:21:22,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343069973] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:22,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629447190] [2023-08-25 05:21:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:22,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:22,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:22,380 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:21:22,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 05:21:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:22,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 05:21:22,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:22,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:22,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629447190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:22,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:22,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-08-25 05:21:22,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350535218] [2023-08-25 05:21:22,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:22,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:21:22,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:22,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:21:22,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:21:22,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-25 05:21:22,837 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) [2023-08-25 05:21:22,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:22,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-25 05:21:22,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:23,016 INFO L124 PetriNetUnfolderBase]: 185/361 cut-off events. [2023-08-25 05:21:23,016 INFO L125 PetriNetUnfolderBase]: For 200/200 co-relation queries the response was YES. [2023-08-25 05:21:23,017 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. [2023-08-25 05:21:23,019 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 35 selfloop transitions, 11 changer transitions 8/60 dead transitions. [2023-08-25 05:21:23,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 340 flow [2023-08-25 05:21:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 05:21:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 05:21:23,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 815 transitions. [2023-08-25 05:21:23,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393530997304582 [2023-08-25 05:21:23,022 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 815 transitions. [2023-08-25 05:21:23,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 815 transitions. [2023-08-25 05:21:23,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:23,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 815 transitions. [2023-08-25 05:21:23,024 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) [2023-08-25 05:21:23,027 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) [2023-08-25 05:21:23,028 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) [2023-08-25 05:21:23,028 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 122 flow. Second operand 7 states and 815 transitions. [2023-08-25 05:21:23,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 340 flow [2023-08-25 05:21:23,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 60 transitions, 310 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-25 05:21:23,031 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 172 flow [2023-08-25 05:21:23,031 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} [2023-08-25 05:21:23,031 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-25 05:21:23,032 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 172 flow [2023-08-25 05:21:23,032 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) [2023-08-25 05:21:23,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:23,033 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:23,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:23,238 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 [2023-08-25 05:21:23,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:23,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:23,239 INFO L85 PathProgramCache]: Analyzing trace with hash 283059937, now seen corresponding path program 2 times [2023-08-25 05:21:23,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:23,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912450883] [2023-08-25 05:21:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:23,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:23,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:23,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912450883] [2023-08-25 05:21:23,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912450883] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:23,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470640652] [2023-08-25 05:21:23,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:21:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:23,449 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:21:23,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 05:21:23,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:21:23,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:23,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 05:21:23,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:23,697 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:23,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:24,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:24,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470640652] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:24,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:24,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 6] total 15 [2023-08-25 05:21:24,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232799331] [2023-08-25 05:21:24,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:24,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 05:21:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 05:21:24,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-08-25 05:21:24,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:21:24,086 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) [2023-08-25 05:21:24,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:24,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:21:24,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:24,508 INFO L124 PetriNetUnfolderBase]: 319/620 cut-off events. [2023-08-25 05:21:24,509 INFO L125 PetriNetUnfolderBase]: For 312/316 co-relation queries the response was YES. [2023-08-25 05:21:24,510 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. [2023-08-25 05:21:24,513 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 63 selfloop transitions, 35 changer transitions 12/116 dead transitions. [2023-08-25 05:21:24,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 116 transitions, 647 flow [2023-08-25 05:21:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 05:21:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 05:21:24,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1604 transitions. [2023-08-25 05:21:24,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323450134770889 [2023-08-25 05:21:24,518 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1604 transitions. [2023-08-25 05:21:24,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1604 transitions. [2023-08-25 05:21:24,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:24,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1604 transitions. [2023-08-25 05:21:24,523 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) [2023-08-25 05:21:24,528 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) [2023-08-25 05:21:24,529 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) [2023-08-25 05:21:24,529 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 172 flow. Second operand 14 states and 1604 transitions. [2023-08-25 05:21:24,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 116 transitions, 647 flow [2023-08-25 05:21:24,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 116 transitions, 643 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-25 05:21:24,533 INFO L231 Difference]: Finished difference. Result has 63 places, 59 transitions, 413 flow [2023-08-25 05:21:24,533 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} [2023-08-25 05:21:24,534 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2023-08-25 05:21:24,534 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 59 transitions, 413 flow [2023-08-25 05:21:24,534 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) [2023-08-25 05:21:24,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:24,535 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:24,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:24,749 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 [2023-08-25 05:21:24,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:24,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:24,750 INFO L85 PathProgramCache]: Analyzing trace with hash -122515463, now seen corresponding path program 3 times [2023-08-25 05:21:24,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:24,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567481117] [2023-08-25 05:21:24,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:24,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:25,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:25,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567481117] [2023-08-25 05:21:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567481117] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:25,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616781728] [2023-08-25 05:21:25,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:21:25,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:25,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:25,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:21:25,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 05:21:25,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:21:25,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:25,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 05:21:25,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:25,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:25,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616781728] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:25,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:25,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 11 [2023-08-25 05:21:25,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794751891] [2023-08-25 05:21:25,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:25,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 05:21:25,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:25,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 05:21:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2023-08-25 05:21:25,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-25 05:21:25,412 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) [2023-08-25 05:21:25,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:25,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-25 05:21:25,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:25,771 INFO L124 PetriNetUnfolderBase]: 542/1093 cut-off events. [2023-08-25 05:21:25,772 INFO L125 PetriNetUnfolderBase]: For 2664/2672 co-relation queries the response was YES. [2023-08-25 05:21:25,778 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. [2023-08-25 05:21:25,786 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 93 selfloop transitions, 49 changer transitions 14/162 dead transitions. [2023-08-25 05:21:25,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 162 transitions, 1273 flow [2023-08-25 05:21:25,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 05:21:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 05:21:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1421 transitions. [2023-08-25 05:21:25,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4468553459119497 [2023-08-25 05:21:25,790 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1421 transitions. [2023-08-25 05:21:25,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1421 transitions. [2023-08-25 05:21:25,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:25,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1421 transitions. [2023-08-25 05:21:25,794 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) [2023-08-25 05:21:25,799 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) [2023-08-25 05:21:25,800 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) [2023-08-25 05:21:25,800 INFO L175 Difference]: Start difference. First operand has 63 places, 59 transitions, 413 flow. Second operand 12 states and 1421 transitions. [2023-08-25 05:21:25,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 162 transitions, 1273 flow [2023-08-25 05:21:25,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 162 transitions, 1162 flow, removed 40 selfloop flow, removed 4 redundant places. [2023-08-25 05:21:25,810 INFO L231 Difference]: Finished difference. Result has 77 places, 92 transitions, 740 flow [2023-08-25 05:21:25,810 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} [2023-08-25 05:21:25,811 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 37 predicate places. [2023-08-25 05:21:25,811 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 92 transitions, 740 flow [2023-08-25 05:21:25,811 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) [2023-08-25 05:21:25,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:25,812 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:25,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:26,017 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 [2023-08-25 05:21:26,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:26,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:26,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2146854201, now seen corresponding path program 2 times [2023-08-25 05:21:26,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:26,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115563502] [2023-08-25 05:21:26,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:26,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:26,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:26,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:26,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115563502] [2023-08-25 05:21:26,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115563502] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:26,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671345572] [2023-08-25 05:21:26,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:21:26,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:26,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:26,237 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 05:21:26,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 05:21:26,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:21:26,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:26,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 05:21:26,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:26,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:26,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671345572] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:26,632 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:26,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-25 05:21:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333835921] [2023-08-25 05:21:26,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:26,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 05:21:26,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 05:21:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-08-25 05:21:26,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2023-08-25 05:21:26,636 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) [2023-08-25 05:21:26,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:26,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2023-08-25 05:21:26,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:26,899 INFO L124 PetriNetUnfolderBase]: 646/1267 cut-off events. [2023-08-25 05:21:26,899 INFO L125 PetriNetUnfolderBase]: For 5376/5393 co-relation queries the response was YES. [2023-08-25 05:21:26,905 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. [2023-08-25 05:21:26,914 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 81 selfloop transitions, 50 changer transitions 4/146 dead transitions. [2023-08-25 05:21:26,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 146 transitions, 1375 flow [2023-08-25 05:21:26,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 05:21:26,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 05:21:26,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 989 transitions. [2023-08-25 05:21:26,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46650943396226413 [2023-08-25 05:21:26,917 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 989 transitions. [2023-08-25 05:21:26,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 989 transitions. [2023-08-25 05:21:26,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:26,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 989 transitions. [2023-08-25 05:21:26,920 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) [2023-08-25 05:21:26,922 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) [2023-08-25 05:21:26,923 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) [2023-08-25 05:21:26,923 INFO L175 Difference]: Start difference. First operand has 77 places, 92 transitions, 740 flow. Second operand 8 states and 989 transitions. [2023-08-25 05:21:26,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 146 transitions, 1375 flow [2023-08-25 05:21:26,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 146 transitions, 1346 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-25 05:21:26,943 INFO L231 Difference]: Finished difference. Result has 87 places, 108 transitions, 1063 flow [2023-08-25 05:21:26,943 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} [2023-08-25 05:21:26,944 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2023-08-25 05:21:26,944 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 108 transitions, 1063 flow [2023-08-25 05:21:26,945 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) [2023-08-25 05:21:26,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:26,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:26,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:27,151 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 [2023-08-25 05:21:27,151 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:27,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:27,152 INFO L85 PathProgramCache]: Analyzing trace with hash 252474887, now seen corresponding path program 3 times [2023-08-25 05:21:27,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:27,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251820049] [2023-08-25 05:21:27,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:27,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:27,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:27,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:27,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251820049] [2023-08-25 05:21:27,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251820049] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:27,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687730506] [2023-08-25 05:21:27,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:21:27,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:27,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:27,390 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) [2023-08-25 05:21:27,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 05:21:27,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:21:27,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:27,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 05:21:27,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:27,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:27,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687730506] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:27,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:27,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-25 05:21:27,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969889847] [2023-08-25 05:21:27,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:27,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 05:21:27,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:27,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 05:21:27,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-08-25 05:21:27,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 265 [2023-08-25 05:21:27,679 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) [2023-08-25 05:21:27,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:27,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 265 [2023-08-25 05:21:27,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:28,090 INFO L124 PetriNetUnfolderBase]: 860/1679 cut-off events. [2023-08-25 05:21:28,091 INFO L125 PetriNetUnfolderBase]: For 10148/10174 co-relation queries the response was YES. [2023-08-25 05:21:28,098 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. [2023-08-25 05:21:28,108 INFO L140 encePairwiseOnDemand]: 258/265 looper letters, 110 selfloop transitions, 71 changer transitions 8/200 dead transitions. [2023-08-25 05:21:28,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 200 transitions, 2167 flow [2023-08-25 05:21:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 05:21:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 05:21:28,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1366 transitions. [2023-08-25 05:21:28,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686106346483705 [2023-08-25 05:21:28,112 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1366 transitions. [2023-08-25 05:21:28,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1366 transitions. [2023-08-25 05:21:28,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:28,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1366 transitions. [2023-08-25 05:21:28,116 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) [2023-08-25 05:21:28,120 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) [2023-08-25 05:21:28,120 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) [2023-08-25 05:21:28,121 INFO L175 Difference]: Start difference. First operand has 87 places, 108 transitions, 1063 flow. Second operand 11 states and 1366 transitions. [2023-08-25 05:21:28,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 200 transitions, 2167 flow [2023-08-25 05:21:28,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 200 transitions, 2117 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-25 05:21:28,157 INFO L231 Difference]: Finished difference. Result has 101 places, 134 transitions, 1599 flow [2023-08-25 05:21:28,157 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} [2023-08-25 05:21:28,157 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2023-08-25 05:21:28,157 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 134 transitions, 1599 flow [2023-08-25 05:21:28,158 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) [2023-08-25 05:21:28,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:28,158 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] [2023-08-25 05:21:28,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:28,363 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 [2023-08-25 05:21:28,364 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:28,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash 323923132, now seen corresponding path program 1 times [2023-08-25 05:21:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:28,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20726722] [2023-08-25 05:21:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:28,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:29,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:29,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20726722] [2023-08-25 05:21:29,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20726722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:29,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172515670] [2023-08-25 05:21:29,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:29,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:29,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:29,029 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) [2023-08-25 05:21:29,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 05:21:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:29,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:21:29,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:29,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:32,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172515670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:32,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:32,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 05:21:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248330257] [2023-08-25 05:21:32,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:21:32,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:32,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:21:32,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:21:32,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:21:32,215 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) [2023-08-25 05:21:32,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:32,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:21:32,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:36,196 INFO L124 PetriNetUnfolderBase]: 983/2013 cut-off events. [2023-08-25 05:21:36,196 INFO L125 PetriNetUnfolderBase]: For 15958/15962 co-relation queries the response was YES. [2023-08-25 05:21:36,207 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. [2023-08-25 05:21:36,219 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 136 selfloop transitions, 155 changer transitions 28/325 dead transitions. [2023-08-25 05:21:36,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 325 transitions, 3561 flow [2023-08-25 05:21:36,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 05:21:36,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 05:21:36,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3862 transitions. [2023-08-25 05:21:36,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4286348501664817 [2023-08-25 05:21:36,232 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3862 transitions. [2023-08-25 05:21:36,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3862 transitions. [2023-08-25 05:21:36,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:36,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3862 transitions. [2023-08-25 05:21:36,244 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) [2023-08-25 05:21:36,269 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) [2023-08-25 05:21:36,272 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) [2023-08-25 05:21:36,272 INFO L175 Difference]: Start difference. First operand has 101 places, 134 transitions, 1599 flow. Second operand 34 states and 3862 transitions. [2023-08-25 05:21:36,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 325 transitions, 3561 flow [2023-08-25 05:21:36,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 325 transitions, 3510 flow, removed 15 selfloop flow, removed 4 redundant places. [2023-08-25 05:21:36,317 INFO L231 Difference]: Finished difference. Result has 139 places, 201 transitions, 2840 flow [2023-08-25 05:21:36,318 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} [2023-08-25 05:21:36,318 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2023-08-25 05:21:36,318 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 201 transitions, 2840 flow [2023-08-25 05:21:36,319 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) [2023-08-25 05:21:36,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:36,319 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 05:21:36,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:36,525 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 [2023-08-25 05:21:36,525 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:36,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1984589386, now seen corresponding path program 4 times [2023-08-25 05:21:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778730324] [2023-08-25 05:21:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:36,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778730324] [2023-08-25 05:21:36,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778730324] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126682157] [2023-08-25 05:21:36,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:21:36,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:36,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:36,836 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) [2023-08-25 05:21:36,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 05:21:36,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:21:36,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:36,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 05:21:36,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:37,115 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:39,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126682157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:39,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:39,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2023-08-25 05:21:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208796583] [2023-08-25 05:21:39,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 05:21:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 05:21:39,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=148, Unknown=1, NotChecked=0, Total=210 [2023-08-25 05:21:39,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 265 [2023-08-25 05:21:39,649 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) [2023-08-25 05:21:39,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:39,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 265 [2023-08-25 05:21:39,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:40,519 INFO L124 PetriNetUnfolderBase]: 931/1932 cut-off events. [2023-08-25 05:21:40,519 INFO L125 PetriNetUnfolderBase]: For 22410/22418 co-relation queries the response was YES. [2023-08-25 05:21:40,529 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. [2023-08-25 05:21:40,542 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 139 selfloop transitions, 83 changer transitions 32/260 dead transitions. [2023-08-25 05:21:40,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 260 transitions, 3743 flow [2023-08-25 05:21:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 05:21:40,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 05:21:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1516 transitions. [2023-08-25 05:21:40,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44005805515239477 [2023-08-25 05:21:40,546 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1516 transitions. [2023-08-25 05:21:40,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1516 transitions. [2023-08-25 05:21:40,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:40,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1516 transitions. [2023-08-25 05:21:40,549 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) [2023-08-25 05:21:40,553 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) [2023-08-25 05:21:40,554 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) [2023-08-25 05:21:40,554 INFO L175 Difference]: Start difference. First operand has 139 places, 201 transitions, 2840 flow. Second operand 13 states and 1516 transitions. [2023-08-25 05:21:40,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 260 transitions, 3743 flow [2023-08-25 05:21:40,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 260 transitions, 3571 flow, removed 67 selfloop flow, removed 10 redundant places. [2023-08-25 05:21:40,633 INFO L231 Difference]: Finished difference. Result has 141 places, 198 transitions, 2812 flow [2023-08-25 05:21:40,634 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} [2023-08-25 05:21:40,634 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 101 predicate places. [2023-08-25 05:21:40,634 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 198 transitions, 2812 flow [2023-08-25 05:21:40,635 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) [2023-08-25 05:21:40,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:40,635 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] [2023-08-25 05:21:40,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:40,841 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 [2023-08-25 05:21:40,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:40,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 596589858, now seen corresponding path program 2 times [2023-08-25 05:21:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080840392] [2023-08-25 05:21:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:40,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:41,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:41,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:41,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080840392] [2023-08-25 05:21:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080840392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:41,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12095805] [2023-08-25 05:21:41,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:21:41,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:41,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:41,529 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) [2023-08-25 05:21:41,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 05:21:41,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:21:41,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:41,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:21:41,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:41,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:41,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:44,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12095805] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:44,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:44,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:21:44,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892477500] [2023-08-25 05:21:44,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:44,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:21:44,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:21:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:21:44,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:21:44,940 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) [2023-08-25 05:21:44,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:44,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:21:44,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:47,245 INFO L124 PetriNetUnfolderBase]: 1205/2411 cut-off events. [2023-08-25 05:21:47,245 INFO L125 PetriNetUnfolderBase]: For 28766/28774 co-relation queries the response was YES. [2023-08-25 05:21:47,255 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. [2023-08-25 05:21:47,266 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 141 selfloop transitions, 174 changer transitions 10/331 dead transitions. [2023-08-25 05:21:47,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 331 transitions, 4733 flow [2023-08-25 05:21:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 05:21:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 05:21:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2494 transitions. [2023-08-25 05:21:47,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42778730703259005 [2023-08-25 05:21:47,272 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2494 transitions. [2023-08-25 05:21:47,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2494 transitions. [2023-08-25 05:21:47,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:47,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2494 transitions. [2023-08-25 05:21:47,276 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) [2023-08-25 05:21:47,282 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) [2023-08-25 05:21:47,283 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) [2023-08-25 05:21:47,284 INFO L175 Difference]: Start difference. First operand has 141 places, 198 transitions, 2812 flow. Second operand 22 states and 2494 transitions. [2023-08-25 05:21:47,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 331 transitions, 4733 flow [2023-08-25 05:21:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 331 transitions, 4572 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-25 05:21:47,383 INFO L231 Difference]: Finished difference. Result has 155 places, 257 transitions, 4265 flow [2023-08-25 05:21:47,383 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} [2023-08-25 05:21:47,384 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 115 predicate places. [2023-08-25 05:21:47,384 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 257 transitions, 4265 flow [2023-08-25 05:21:47,385 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) [2023-08-25 05:21:47,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:47,385 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] [2023-08-25 05:21:47,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:47,590 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 [2023-08-25 05:21:47,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:47,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:47,591 INFO L85 PathProgramCache]: Analyzing trace with hash 923655842, now seen corresponding path program 3 times [2023-08-25 05:21:47,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:47,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067138464] [2023-08-25 05:21:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:47,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:48,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:48,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:48,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067138464] [2023-08-25 05:21:48,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067138464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:48,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736364873] [2023-08-25 05:21:48,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:21:48,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:48,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:48,234 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) [2023-08-25 05:21:48,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 05:21:48,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:21:48,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:48,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:21:48,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:48,665 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:21:51,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:51,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736364873] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:21:51,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:21:51,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:21:51,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744790744] [2023-08-25 05:21:51,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:21:51,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:21:51,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:21:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:21:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:21:51,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:21:51,359 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) [2023-08-25 05:21:51,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:21:51,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:21:51,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:21:57,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-25 05:21:57,561 INFO L124 PetriNetUnfolderBase]: 1224/2496 cut-off events. [2023-08-25 05:21:57,562 INFO L125 PetriNetUnfolderBase]: For 41014/41014 co-relation queries the response was YES. [2023-08-25 05:21:57,571 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. [2023-08-25 05:21:57,580 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 168 selfloop transitions, 184 changer transitions 15/373 dead transitions. [2023-08-25 05:21:57,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 373 transitions, 5592 flow [2023-08-25 05:21:57,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 05:21:57,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 05:21:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3511 transitions. [2023-08-25 05:21:57,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273889227023737 [2023-08-25 05:21:57,586 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3511 transitions. [2023-08-25 05:21:57,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3511 transitions. [2023-08-25 05:21:57,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:21:57,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3511 transitions. [2023-08-25 05:21:57,591 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) [2023-08-25 05:21:57,599 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) [2023-08-25 05:21:57,600 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) [2023-08-25 05:21:57,600 INFO L175 Difference]: Start difference. First operand has 155 places, 257 transitions, 4265 flow. Second operand 31 states and 3511 transitions. [2023-08-25 05:21:57,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 373 transitions, 5592 flow [2023-08-25 05:21:57,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 373 transitions, 5542 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-25 05:21:57,722 INFO L231 Difference]: Finished difference. Result has 186 places, 265 transitions, 4814 flow [2023-08-25 05:21:57,722 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} [2023-08-25 05:21:57,723 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 146 predicate places. [2023-08-25 05:21:57,723 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 265 transitions, 4814 flow [2023-08-25 05:21:57,723 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) [2023-08-25 05:21:57,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:21:57,723 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] [2023-08-25 05:21:57,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 05:21:57,924 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 [2023-08-25 05:21:57,924 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:21:57,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:21:57,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1035464862, now seen corresponding path program 4 times [2023-08-25 05:21:57,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:21:57,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518885948] [2023-08-25 05:21:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:21:57,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:21:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:21:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:58,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:21:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518885948] [2023-08-25 05:21:58,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518885948] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:21:58,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667208051] [2023-08-25 05:21:58,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:21:58,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:21:58,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:21:58,524 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) [2023-08-25 05:21:58,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 05:21:58,610 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:21:58,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:21:58,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:21:58,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:21:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:21:58,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:09,046 WARN L234 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 102 DAG size of output: 87 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 05:22:09,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:09,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667208051] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:09,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:09,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:22:09,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237315854] [2023-08-25 05:22:09,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:09,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:22:09,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:09,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:22:09,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:22:09,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:22:09,749 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) [2023-08-25 05:22:09,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:09,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:22:09,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:13,100 INFO L124 PetriNetUnfolderBase]: 1358/2729 cut-off events. [2023-08-25 05:22:13,101 INFO L125 PetriNetUnfolderBase]: For 57045/57057 co-relation queries the response was YES. [2023-08-25 05:22:13,113 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. [2023-08-25 05:22:13,128 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 155 selfloop transitions, 209 changer transitions 10/380 dead transitions. [2023-08-25 05:22:13,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 380 transitions, 6576 flow [2023-08-25 05:22:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 05:22:13,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 05:22:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2839 transitions. [2023-08-25 05:22:13,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4285283018867925 [2023-08-25 05:22:13,134 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2839 transitions. [2023-08-25 05:22:13,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2839 transitions. [2023-08-25 05:22:13,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:13,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2839 transitions. [2023-08-25 05:22:13,139 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) [2023-08-25 05:22:13,145 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) [2023-08-25 05:22:13,146 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) [2023-08-25 05:22:13,146 INFO L175 Difference]: Start difference. First operand has 186 places, 265 transitions, 4814 flow. Second operand 25 states and 2839 transitions. [2023-08-25 05:22:13,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 380 transitions, 6576 flow [2023-08-25 05:22:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 380 transitions, 6406 flow, removed 8 selfloop flow, removed 20 redundant places. [2023-08-25 05:22:13,355 INFO L231 Difference]: Finished difference. Result has 198 places, 294 transitions, 6071 flow [2023-08-25 05:22:13,355 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} [2023-08-25 05:22:13,355 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 158 predicate places. [2023-08-25 05:22:13,356 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 294 transitions, 6071 flow [2023-08-25 05:22:13,356 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) [2023-08-25 05:22:13,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:13,356 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] [2023-08-25 05:22:13,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 05:22:13,562 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 [2023-08-25 05:22:13,562 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:22:13,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:13,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1399330138, now seen corresponding path program 5 times [2023-08-25 05:22:13,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694885483] [2023-08-25 05:22:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:13,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:14,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:14,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694885483] [2023-08-25 05:22:14,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694885483] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773575854] [2023-08-25 05:22:14,291 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:22:14,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:14,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:14,292 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) [2023-08-25 05:22:14,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 05:22:14,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:22:14,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:22:14,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:22:14,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:14,688 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:14,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:17,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:17,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773575854] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:17,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:17,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 05:22:17,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539549754] [2023-08-25 05:22:17,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:17,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:22:17,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:17,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:22:17,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:22:17,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:22:17,277 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) [2023-08-25 05:22:17,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:17,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:22:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:22,474 INFO L124 PetriNetUnfolderBase]: 1523/3106 cut-off events. [2023-08-25 05:22:22,474 INFO L125 PetriNetUnfolderBase]: For 85134/85149 co-relation queries the response was YES. [2023-08-25 05:22:22,489 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. [2023-08-25 05:22:22,506 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 162 selfloop transitions, 286 changer transitions 17/471 dead transitions. [2023-08-25 05:22:22,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 471 transitions, 8986 flow [2023-08-25 05:22:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-25 05:22:22,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-25 05:22:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 4302 transitions. [2023-08-25 05:22:22,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42720953326713007 [2023-08-25 05:22:22,512 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 4302 transitions. [2023-08-25 05:22:22,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 4302 transitions. [2023-08-25 05:22:22,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:22,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 4302 transitions. [2023-08-25 05:22:22,518 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) [2023-08-25 05:22:22,526 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) [2023-08-25 05:22:22,527 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) [2023-08-25 05:22:22,527 INFO L175 Difference]: Start difference. First operand has 198 places, 294 transitions, 6071 flow. Second operand 38 states and 4302 transitions. [2023-08-25 05:22:22,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 471 transitions, 8986 flow [2023-08-25 05:22:22,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 471 transitions, 8835 flow, removed 60 selfloop flow, removed 8 redundant places. [2023-08-25 05:22:22,842 INFO L231 Difference]: Finished difference. Result has 235 places, 351 transitions, 8202 flow [2023-08-25 05:22:22,842 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} [2023-08-25 05:22:22,843 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2023-08-25 05:22:22,843 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 351 transitions, 8202 flow [2023-08-25 05:22:22,843 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) [2023-08-25 05:22:22,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:22,844 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] [2023-08-25 05:22:22,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 05:22:23,048 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 [2023-08-25 05:22:23,049 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:22:23,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1638883002, now seen corresponding path program 6 times [2023-08-25 05:22:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:23,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613454527] [2023-08-25 05:22:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:23,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:23,700 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:23,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613454527] [2023-08-25 05:22:23,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613454527] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:23,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354083913] [2023-08-25 05:22:23,701 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:22:23,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:23,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:23,702 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) [2023-08-25 05:22:23,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 05:22:23,793 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:22:23,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:22:23,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:22:23,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:24,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:27,269 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:27,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354083913] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:27,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:27,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 05:22:27,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533175368] [2023-08-25 05:22:27,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:27,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 05:22:27,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:27,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 05:22:27,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-08-25 05:22:27,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:22:27,273 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) [2023-08-25 05:22:27,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:27,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:22:27,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:34,871 INFO L124 PetriNetUnfolderBase]: 1634/3315 cut-off events. [2023-08-25 05:22:34,871 INFO L125 PetriNetUnfolderBase]: For 118055/118055 co-relation queries the response was YES. [2023-08-25 05:22:34,890 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. [2023-08-25 05:22:34,908 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 167 selfloop transitions, 311 changer transitions 15/499 dead transitions. [2023-08-25 05:22:34,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 499 transitions, 10731 flow [2023-08-25 05:22:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-25 05:22:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-25 05:22:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4637 transitions. [2023-08-25 05:22:34,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267832489645651 [2023-08-25 05:22:34,915 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4637 transitions. [2023-08-25 05:22:34,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4637 transitions. [2023-08-25 05:22:34,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:34,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4637 transitions. [2023-08-25 05:22:34,921 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) [2023-08-25 05:22:34,928 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) [2023-08-25 05:22:34,929 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) [2023-08-25 05:22:34,929 INFO L175 Difference]: Start difference. First operand has 235 places, 351 transitions, 8202 flow. Second operand 41 states and 4637 transitions. [2023-08-25 05:22:34,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 499 transitions, 10731 flow [2023-08-25 05:22:35,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 499 transitions, 10099 flow, removed 268 selfloop flow, removed 13 redundant places. [2023-08-25 05:22:35,525 INFO L231 Difference]: Finished difference. Result has 264 places, 377 transitions, 9354 flow [2023-08-25 05:22:35,525 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} [2023-08-25 05:22:35,525 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2023-08-25 05:22:35,525 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 377 transitions, 9354 flow [2023-08-25 05:22:35,526 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) [2023-08-25 05:22:35,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:35,526 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] [2023-08-25 05:22:35,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 05:22:35,726 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 [2023-08-25 05:22:35,727 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:22:35,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash -76287440, now seen corresponding path program 7 times [2023-08-25 05:22:35,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:35,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186005926] [2023-08-25 05:22:35,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:35,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:36,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:36,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:36,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186005926] [2023-08-25 05:22:36,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186005926] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:36,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420215420] [2023-08-25 05:22:36,318 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:22:36,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:36,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:36,321 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) [2023-08-25 05:22:36,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 05:22:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:36,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:22:36,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:36,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:41,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420215420] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:41,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:41,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:22:41,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096533389] [2023-08-25 05:22:41,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:41,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:22:41,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:41,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:22:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:22:41,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:22:41,969 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) [2023-08-25 05:22:41,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:41,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:22:41,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:22:47,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-25 05:22:49,112 INFO L124 PetriNetUnfolderBase]: 1831/3671 cut-off events. [2023-08-25 05:22:49,113 INFO L125 PetriNetUnfolderBase]: For 128143/128143 co-relation queries the response was YES. [2023-08-25 05:22:49,131 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. [2023-08-25 05:22:49,148 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 178 selfloop transitions, 321 changer transitions 10/515 dead transitions. [2023-08-25 05:22:49,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 515 transitions, 12242 flow [2023-08-25 05:22:49,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 05:22:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 05:22:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3068 transitions. [2023-08-25 05:22:49,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4287910552061495 [2023-08-25 05:22:49,152 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3068 transitions. [2023-08-25 05:22:49,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3068 transitions. [2023-08-25 05:22:49,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:22:49,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3068 transitions. [2023-08-25 05:22:49,157 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) [2023-08-25 05:22:49,162 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) [2023-08-25 05:22:49,162 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) [2023-08-25 05:22:49,162 INFO L175 Difference]: Start difference. First operand has 264 places, 377 transitions, 9354 flow. Second operand 27 states and 3068 transitions. [2023-08-25 05:22:49,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 515 transitions, 12242 flow [2023-08-25 05:22:49,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 515 transitions, 11833 flow, removed 115 selfloop flow, removed 26 redundant places. [2023-08-25 05:22:49,651 INFO L231 Difference]: Finished difference. Result has 272 places, 430 transitions, 11430 flow [2023-08-25 05:22:49,651 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} [2023-08-25 05:22:49,651 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 232 predicate places. [2023-08-25 05:22:49,651 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 430 transitions, 11430 flow [2023-08-25 05:22:49,652 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) [2023-08-25 05:22:49,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:22:49,652 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] [2023-08-25 05:22:49,657 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 05:22:49,857 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 [2023-08-25 05:22:49,857 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:22:49,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:22:49,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2104455970, now seen corresponding path program 8 times [2023-08-25 05:22:49,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:22:49,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219569102] [2023-08-25 05:22:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:22:49,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:22:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:22:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:22:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219569102] [2023-08-25 05:22:50,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219569102] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:22:50,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714735976] [2023-08-25 05:22:50,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:22:50,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:22:50,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:22:50,549 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) [2023-08-25 05:22:50,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 05:22:50,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:22:50,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:22:50,643 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:22:50,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:22:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:50,933 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:22:55,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:22:55,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714735976] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:22:55,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:22:55,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:22:55,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301664285] [2023-08-25 05:22:55,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:22:55,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:22:55,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:22:55,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:22:55,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:22:55,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:22:55,207 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) [2023-08-25 05:22:55,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:22:55,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:22:55,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:00,778 INFO L124 PetriNetUnfolderBase]: 1909/3832 cut-off events. [2023-08-25 05:23:00,778 INFO L125 PetriNetUnfolderBase]: For 160491/160502 co-relation queries the response was YES. [2023-08-25 05:23:00,801 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. [2023-08-25 05:23:00,817 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 186 selfloop transitions, 348 changer transitions 11/551 dead transitions. [2023-08-25 05:23:00,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 551 transitions, 13855 flow [2023-08-25 05:23:00,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 05:23:00,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 05:23:00,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3628 transitions. [2023-08-25 05:23:00,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42783018867924527 [2023-08-25 05:23:00,822 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3628 transitions. [2023-08-25 05:23:00,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3628 transitions. [2023-08-25 05:23:00,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:00,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3628 transitions. [2023-08-25 05:23:00,827 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) [2023-08-25 05:23:00,833 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) [2023-08-25 05:23:00,834 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) [2023-08-25 05:23:00,834 INFO L175 Difference]: Start difference. First operand has 272 places, 430 transitions, 11430 flow. Second operand 32 states and 3628 transitions. [2023-08-25 05:23:00,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 551 transitions, 13855 flow [2023-08-25 05:23:01,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 551 transitions, 13553 flow, removed 114 selfloop flow, removed 13 redundant places. [2023-08-25 05:23:01,502 INFO L231 Difference]: Finished difference. Result has 294 places, 452 transitions, 12917 flow [2023-08-25 05:23:01,503 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} [2023-08-25 05:23:01,503 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2023-08-25 05:23:01,503 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 452 transitions, 12917 flow [2023-08-25 05:23:01,503 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) [2023-08-25 05:23:01,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:01,504 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] [2023-08-25 05:23:01,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:01,704 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 [2023-08-25 05:23:01,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:23:01,704 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:01,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1804671864, now seen corresponding path program 9 times [2023-08-25 05:23:01,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:01,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754165798] [2023-08-25 05:23:01,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:01,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:02,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754165798] [2023-08-25 05:23:02,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754165798] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:02,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988830841] [2023-08-25 05:23:02,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:23:02,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:02,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:02,337 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) [2023-08-25 05:23:02,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 05:23:02,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:23:02,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:02,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:23:02,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:02,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:07,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988830841] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:07,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:07,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:23:07,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150153429] [2023-08-25 05:23:07,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:07,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:23:07,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:07,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:23:07,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:23:07,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:23:07,905 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) [2023-08-25 05:23:07,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:07,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:23:07,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:11,830 INFO L124 PetriNetUnfolderBase]: 1928/3902 cut-off events. [2023-08-25 05:23:11,831 INFO L125 PetriNetUnfolderBase]: For 183462/183473 co-relation queries the response was YES. [2023-08-25 05:23:11,853 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. [2023-08-25 05:23:11,868 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 205 selfloop transitions, 317 changer transitions 10/538 dead transitions. [2023-08-25 05:23:11,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 538 transitions, 14726 flow [2023-08-25 05:23:11,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 05:23:11,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 05:23:11,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2498 transitions. [2023-08-25 05:23:11,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42847341337907374 [2023-08-25 05:23:11,871 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2498 transitions. [2023-08-25 05:23:11,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2498 transitions. [2023-08-25 05:23:11,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:11,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2498 transitions. [2023-08-25 05:23:11,874 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) [2023-08-25 05:23:11,877 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) [2023-08-25 05:23:11,878 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) [2023-08-25 05:23:11,878 INFO L175 Difference]: Start difference. First operand has 294 places, 452 transitions, 12917 flow. Second operand 22 states and 2498 transitions. [2023-08-25 05:23:11,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 538 transitions, 14726 flow [2023-08-25 05:23:12,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 538 transitions, 14412 flow, removed 50 selfloop flow, removed 20 redundant places. [2023-08-25 05:23:12,605 INFO L231 Difference]: Finished difference. Result has 300 places, 463 transitions, 14128 flow [2023-08-25 05:23:12,606 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} [2023-08-25 05:23:12,606 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 260 predicate places. [2023-08-25 05:23:12,606 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 463 transitions, 14128 flow [2023-08-25 05:23:12,606 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) [2023-08-25 05:23:12,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:12,606 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] [2023-08-25 05:23:12,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:12,807 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 [2023-08-25 05:23:12,807 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:23:12,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:12,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1737253074, now seen corresponding path program 10 times [2023-08-25 05:23:12,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:12,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994253596] [2023-08-25 05:23:12,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:12,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:13,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:13,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994253596] [2023-08-25 05:23:13,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994253596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:13,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118459394] [2023-08-25 05:23:13,435 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:23:13,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:13,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:13,436 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) [2023-08-25 05:23:13,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 05:23:13,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:23:13,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:13,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:23:13,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:13,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:18,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:18,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118459394] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:18,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:18,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:23:18,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513565594] [2023-08-25 05:23:18,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:18,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:23:18,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:18,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:23:18,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:23:18,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:23:18,677 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) [2023-08-25 05:23:18,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:18,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:23:18,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:24,510 INFO L124 PetriNetUnfolderBase]: 2062/4175 cut-off events. [2023-08-25 05:23:24,510 INFO L125 PetriNetUnfolderBase]: For 233470/233470 co-relation queries the response was YES. [2023-08-25 05:23:24,537 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. [2023-08-25 05:23:24,628 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 212 selfloop transitions, 370 changer transitions 10/598 dead transitions. [2023-08-25 05:23:24,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 598 transitions, 17281 flow [2023-08-25 05:23:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 05:23:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 05:23:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3499 transitions. [2023-08-25 05:23:24,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259281801582471 [2023-08-25 05:23:24,632 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3499 transitions. [2023-08-25 05:23:24,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3499 transitions. [2023-08-25 05:23:24,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:24,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3499 transitions. [2023-08-25 05:23:24,636 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) [2023-08-25 05:23:24,642 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) [2023-08-25 05:23:24,642 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) [2023-08-25 05:23:24,643 INFO L175 Difference]: Start difference. First operand has 300 places, 463 transitions, 14128 flow. Second operand 31 states and 3499 transitions. [2023-08-25 05:23:24,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 598 transitions, 17281 flow [2023-08-25 05:23:25,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 598 transitions, 17170 flow, removed 32 selfloop flow, removed 11 redundant places. [2023-08-25 05:23:25,474 INFO L231 Difference]: Finished difference. Result has 326 places, 508 transitions, 16789 flow [2023-08-25 05:23:25,475 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} [2023-08-25 05:23:25,475 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 286 predicate places. [2023-08-25 05:23:25,475 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 508 transitions, 16789 flow [2023-08-25 05:23:25,476 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) [2023-08-25 05:23:25,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:25,476 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] [2023-08-25 05:23:25,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-08-25 05:23:25,681 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 [2023-08-25 05:23:25,681 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:23:25,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1316255354, now seen corresponding path program 11 times [2023-08-25 05:23:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926858756] [2023-08-25 05:23:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:25,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:26,458 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:26,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:26,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926858756] [2023-08-25 05:23:26,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926858756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:26,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801799024] [2023-08-25 05:23:26,459 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:23:26,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:26,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:26,460 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) [2023-08-25 05:23:26,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 05:23:26,542 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:23:26,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:26,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:23:26,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:26,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:26,863 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:31,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801799024] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:31,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:31,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:23:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049243507] [2023-08-25 05:23:31,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:31,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:23:31,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:23:31,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:23:31,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:23:31,839 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) [2023-08-25 05:23:31,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:31,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:23:31,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:38,411 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 [] [2023-08-25 05:23:38,977 INFO L124 PetriNetUnfolderBase]: 2141/4333 cut-off events. [2023-08-25 05:23:38,977 INFO L125 PetriNetUnfolderBase]: For 280232/280240 co-relation queries the response was YES. [2023-08-25 05:23:39,006 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. [2023-08-25 05:23:39,026 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 205 selfloop transitions, 393 changer transitions 11/615 dead transitions. [2023-08-25 05:23:39,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 615 transitions, 19248 flow [2023-08-25 05:23:39,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 05:23:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 05:23:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3172 transitions. [2023-08-25 05:23:39,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42749326145552563 [2023-08-25 05:23:39,029 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3172 transitions. [2023-08-25 05:23:39,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3172 transitions. [2023-08-25 05:23:39,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:39,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3172 transitions. [2023-08-25 05:23:39,033 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) [2023-08-25 05:23:39,038 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) [2023-08-25 05:23:39,038 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) [2023-08-25 05:23:39,038 INFO L175 Difference]: Start difference. First operand has 326 places, 508 transitions, 16789 flow. Second operand 28 states and 3172 transitions. [2023-08-25 05:23:39,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 615 transitions, 19248 flow [2023-08-25 05:23:40,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 615 transitions, 19107 flow, removed 36 selfloop flow, removed 13 redundant places. [2023-08-25 05:23:40,078 INFO L231 Difference]: Finished difference. Result has 341 places, 525 transitions, 18560 flow [2023-08-25 05:23:40,078 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} [2023-08-25 05:23:40,079 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 301 predicate places. [2023-08-25 05:23:40,079 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 525 transitions, 18560 flow [2023-08-25 05:23:40,079 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) [2023-08-25 05:23:40,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:40,079 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] [2023-08-25 05:23:40,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:40,280 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 [2023-08-25 05:23:40,280 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:23:40,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:40,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1484628842, now seen corresponding path program 12 times [2023-08-25 05:23:40,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:40,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123008130] [2023-08-25 05:23:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:40,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:40,868 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:40,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123008130] [2023-08-25 05:23:40,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123008130] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:40,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293651868] [2023-08-25 05:23:40,869 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:23:40,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:40,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:40,870 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) [2023-08-25 05:23:40,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 05:23:40,983 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:23:40,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:23:40,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:23:40,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:41,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:44,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293651868] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:44,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:44,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:23:44,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262629290] [2023-08-25 05:23:44,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:44,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:23:44,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:44,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:23:44,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:23:44,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:23:44,276 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) [2023-08-25 05:23:44,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:44,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:23:44,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:23:49,773 INFO L124 PetriNetUnfolderBase]: 2431/4957 cut-off events. [2023-08-25 05:23:49,773 INFO L125 PetriNetUnfolderBase]: For 367366/367366 co-relation queries the response was YES. [2023-08-25 05:23:49,807 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. [2023-08-25 05:23:49,830 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 233 selfloop transitions, 461 changer transitions 7/707 dead transitions. [2023-08-25 05:23:49,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 707 transitions, 23939 flow [2023-08-25 05:23:49,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 05:23:49,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 05:23:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3725 transitions. [2023-08-25 05:23:49,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259576901086335 [2023-08-25 05:23:49,833 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3725 transitions. [2023-08-25 05:23:49,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3725 transitions. [2023-08-25 05:23:49,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:23:49,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3725 transitions. [2023-08-25 05:23:49,838 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) [2023-08-25 05:23:49,844 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) [2023-08-25 05:23:49,844 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) [2023-08-25 05:23:49,844 INFO L175 Difference]: Start difference. First operand has 341 places, 525 transitions, 18560 flow. Second operand 33 states and 3725 transitions. [2023-08-25 05:23:49,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 707 transitions, 23939 flow [2023-08-25 05:23:51,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 707 transitions, 23785 flow, removed 25 selfloop flow, removed 20 redundant places. [2023-08-25 05:23:51,360 INFO L231 Difference]: Finished difference. Result has 363 places, 609 transitions, 23563 flow [2023-08-25 05:23:51,361 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} [2023-08-25 05:23:51,361 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2023-08-25 05:23:51,361 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 609 transitions, 23563 flow [2023-08-25 05:23:51,361 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) [2023-08-25 05:23:51,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:23:51,362 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] [2023-08-25 05:23:51,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-25 05:23:51,564 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 [2023-08-25 05:23:51,565 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:23:51,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:23:51,565 INFO L85 PathProgramCache]: Analyzing trace with hash -474714182, now seen corresponding path program 13 times [2023-08-25 05:23:51,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:23:51,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176347724] [2023-08-25 05:23:51,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:23:51,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:23:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:52,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:52,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:23:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176347724] [2023-08-25 05:23:52,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176347724] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:23:52,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052021359] [2023-08-25 05:23:52,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:23:52,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:23:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:23:52,245 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) [2023-08-25 05:23:52,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 05:23:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:23:52,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:23:52,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:23:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:52,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:23:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:23:58,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052021359] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:23:58,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:23:58,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:23:58,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717350408] [2023-08-25 05:23:58,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:23:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:23:58,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:23:58,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:23:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:23:58,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:23:58,537 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) [2023-08-25 05:23:58,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:23:58,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:23:58,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:04,500 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 [] [2023-08-25 05:24:07,865 INFO L124 PetriNetUnfolderBase]: 2540/5157 cut-off events. [2023-08-25 05:24:07,866 INFO L125 PetriNetUnfolderBase]: For 456968/456976 co-relation queries the response was YES. [2023-08-25 05:24:07,903 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. [2023-08-25 05:24:07,927 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 257 selfloop transitions, 448 changer transitions 12/723 dead transitions. [2023-08-25 05:24:07,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 723 transitions, 26548 flow [2023-08-25 05:24:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 05:24:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 05:24:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3601 transitions. [2023-08-25 05:24:07,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42464622641509436 [2023-08-25 05:24:07,935 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3601 transitions. [2023-08-25 05:24:07,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3601 transitions. [2023-08-25 05:24:07,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:07,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3601 transitions. [2023-08-25 05:24:07,940 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) [2023-08-25 05:24:07,945 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) [2023-08-25 05:24:07,945 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) [2023-08-25 05:24:07,945 INFO L175 Difference]: Start difference. First operand has 363 places, 609 transitions, 23563 flow. Second operand 32 states and 3601 transitions. [2023-08-25 05:24:07,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 723 transitions, 26548 flow [2023-08-25 05:24:09,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 723 transitions, 26286 flow, removed 95 selfloop flow, removed 17 redundant places. [2023-08-25 05:24:09,947 INFO L231 Difference]: Finished difference. Result has 381 places, 636 transitions, 25785 flow [2023-08-25 05:24:09,948 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} [2023-08-25 05:24:09,948 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 341 predicate places. [2023-08-25 05:24:09,948 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 636 transitions, 25785 flow [2023-08-25 05:24:09,949 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) [2023-08-25 05:24:09,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:09,949 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] [2023-08-25 05:24:09,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 05:24:10,149 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 [2023-08-25 05:24:10,150 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:24:10,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:10,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1915309850, now seen corresponding path program 14 times [2023-08-25 05:24:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:10,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957941625] [2023-08-25 05:24:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:10,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:10,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957941625] [2023-08-25 05:24:10,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957941625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:10,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769866292] [2023-08-25 05:24:10,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:24:10,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:10,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:10,718 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) [2023-08-25 05:24:10,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 05:24:10,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:24:10,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:10,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:24:10,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:11,113 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:24:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769866292] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:24:16,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:24:16,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:24:16,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987684957] [2023-08-25 05:24:16,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:24:16,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:24:16,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:24:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:24:16,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:24:16,337 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) [2023-08-25 05:24:16,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:16,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:24:16,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:21,222 INFO L124 PetriNetUnfolderBase]: 2520/5154 cut-off events. [2023-08-25 05:24:21,222 INFO L125 PetriNetUnfolderBase]: For 502359/502367 co-relation queries the response was YES. [2023-08-25 05:24:21,262 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. [2023-08-25 05:24:21,286 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 257 selfloop transitions, 431 changer transitions 10/704 dead transitions. [2023-08-25 05:24:21,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 704 transitions, 27689 flow [2023-08-25 05:24:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 05:24:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 05:24:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3036 transitions. [2023-08-25 05:24:21,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243186582809224 [2023-08-25 05:24:21,289 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3036 transitions. [2023-08-25 05:24:21,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3036 transitions. [2023-08-25 05:24:21,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:21,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3036 transitions. [2023-08-25 05:24:21,292 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) [2023-08-25 05:24:21,295 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) [2023-08-25 05:24:21,296 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) [2023-08-25 05:24:21,296 INFO L175 Difference]: Start difference. First operand has 381 places, 636 transitions, 25785 flow. Second operand 27 states and 3036 transitions. [2023-08-25 05:24:21,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 704 transitions, 27689 flow [2023-08-25 05:24:23,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 704 transitions, 27451 flow, removed 56 selfloop flow, removed 25 redundant places. [2023-08-25 05:24:23,686 INFO L231 Difference]: Finished difference. Result has 385 places, 640 transitions, 27326 flow [2023-08-25 05:24:23,687 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} [2023-08-25 05:24:23,687 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 345 predicate places. [2023-08-25 05:24:23,687 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 640 transitions, 27326 flow [2023-08-25 05:24:23,687 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) [2023-08-25 05:24:23,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:23,688 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] [2023-08-25 05:24:23,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 05:24:23,893 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 [2023-08-25 05:24:23,893 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:24:23,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:23,893 INFO L85 PathProgramCache]: Analyzing trace with hash -295084768, now seen corresponding path program 15 times [2023-08-25 05:24:23,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:23,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260735976] [2023-08-25 05:24:23,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:23,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:23,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:24,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:24,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260735976] [2023-08-25 05:24:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260735976] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:24,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703721032] [2023-08-25 05:24:24,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:24:24,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:24,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:24,469 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) [2023-08-25 05:24:24,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 05:24:24,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:24:24,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:24,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:24:24,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:24,854 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:24:40,028 WARN L234 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 131 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 05:24:41,925 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:41,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703721032] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:24:41,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:24:41,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:24:41,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196046358] [2023-08-25 05:24:41,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:24:41,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:24:41,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:24:41,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:24:41,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:24:41,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:24:41,929 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) [2023-08-25 05:24:41,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:24:41,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:24:41,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:24:46,960 INFO L124 PetriNetUnfolderBase]: 2681/5457 cut-off events. [2023-08-25 05:24:46,960 INFO L125 PetriNetUnfolderBase]: For 583517/583531 co-relation queries the response was YES. [2023-08-25 05:24:47,001 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. [2023-08-25 05:24:47,028 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 285 selfloop transitions, 452 changer transitions 10/753 dead transitions. [2023-08-25 05:24:47,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 753 transitions, 31080 flow [2023-08-25 05:24:47,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 05:24:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 05:24:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2495 transitions. [2023-08-25 05:24:47,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.427958833619211 [2023-08-25 05:24:47,031 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2495 transitions. [2023-08-25 05:24:47,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2495 transitions. [2023-08-25 05:24:47,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:24:47,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2495 transitions. [2023-08-25 05:24:47,033 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) [2023-08-25 05:24:47,037 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) [2023-08-25 05:24:47,037 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) [2023-08-25 05:24:47,037 INFO L175 Difference]: Start difference. First operand has 385 places, 640 transitions, 27326 flow. Second operand 22 states and 2495 transitions. [2023-08-25 05:24:47,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 753 transitions, 31080 flow [2023-08-25 05:24:49,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 753 transitions, 30968 flow, removed 8 selfloop flow, removed 19 redundant places. [2023-08-25 05:24:49,132 INFO L231 Difference]: Finished difference. Result has 396 places, 684 transitions, 30867 flow [2023-08-25 05:24:49,132 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} [2023-08-25 05:24:49,133 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 356 predicate places. [2023-08-25 05:24:49,133 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 684 transitions, 30867 flow [2023-08-25 05:24:49,133 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) [2023-08-25 05:24:49,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:24:49,133 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] [2023-08-25 05:24:49,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 05:24:49,334 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 [2023-08-25 05:24:49,334 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:24:49,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:24:49,334 INFO L85 PathProgramCache]: Analyzing trace with hash -934551730, now seen corresponding path program 16 times [2023-08-25 05:24:49,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:24:49,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30144546] [2023-08-25 05:24:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:24:49,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:24:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:24:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:49,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:24:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30144546] [2023-08-25 05:24:49,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30144546] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:24:49,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131919193] [2023-08-25 05:24:49,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:24:49,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:24:49,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:24:49,995 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) [2023-08-25 05:24:49,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 05:24:50,090 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:24:50,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:24:50,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:24:50,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:24:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:24:50,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:25:05,045 WARN L234 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 132 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 05:25:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:07,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131919193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:25:07,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:25:07,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:25:07,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756670407] [2023-08-25 05:25:07,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:25:07,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:25:07,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:25:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:25:07,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:25:07,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:25:07,714 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) [2023-08-25 05:25:07,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:25:07,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:25:07,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:25:18,944 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 [] [2023-08-25 05:25:20,136 INFO L124 PetriNetUnfolderBase]: 2869/5783 cut-off events. [2023-08-25 05:25:20,137 INFO L125 PetriNetUnfolderBase]: For 710996/711010 co-relation queries the response was YES. [2023-08-25 05:25:20,223 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. [2023-08-25 05:25:20,261 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 266 selfloop transitions, 520 changer transitions 10/802 dead transitions. [2023-08-25 05:25:20,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 802 transitions, 34979 flow [2023-08-25 05:25:20,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 05:25:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 05:25:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3164 transitions. [2023-08-25 05:25:20,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42641509433962266 [2023-08-25 05:25:20,265 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3164 transitions. [2023-08-25 05:25:20,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3164 transitions. [2023-08-25 05:25:20,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:25:20,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3164 transitions. [2023-08-25 05:25:20,270 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) [2023-08-25 05:25:20,275 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) [2023-08-25 05:25:20,275 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) [2023-08-25 05:25:20,276 INFO L175 Difference]: Start difference. First operand has 396 places, 684 transitions, 30867 flow. Second operand 28 states and 3164 transitions. [2023-08-25 05:25:20,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 802 transitions, 34979 flow [2023-08-25 05:25:23,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 802 transitions, 34873 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-25 05:25:23,189 INFO L231 Difference]: Finished difference. Result has 425 places, 726 transitions, 34760 flow [2023-08-25 05:25:23,190 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} [2023-08-25 05:25:23,190 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 385 predicate places. [2023-08-25 05:25:23,191 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 726 transitions, 34760 flow [2023-08-25 05:25:23,191 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) [2023-08-25 05:25:23,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:25:23,191 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] [2023-08-25 05:25:23,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 05:25:23,396 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 [2023-08-25 05:25:23,396 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:25:23,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:25:23,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1477388036, now seen corresponding path program 17 times [2023-08-25 05:25:23,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:25:23,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661167873] [2023-08-25 05:25:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:25:23,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:25:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:25:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:23,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:25:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661167873] [2023-08-25 05:25:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661167873] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:25:23,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414954636] [2023-08-25 05:25:23,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:25:23,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:25:23,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:25:23,911 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) [2023-08-25 05:25:23,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 05:25:23,998 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:25:23,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:25:23,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:25:24,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:25:24,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:24,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:25:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:39,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414954636] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:25:39,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:25:39,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:25:39,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067460478] [2023-08-25 05:25:39,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:25:39,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:25:39,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:25:39,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:25:39,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=355, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:25:39,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:25:39,989 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) [2023-08-25 05:25:39,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:25:39,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:25:39,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:25:49,522 INFO L124 PetriNetUnfolderBase]: 3128/6344 cut-off events. [2023-08-25 05:25:49,522 INFO L125 PetriNetUnfolderBase]: For 887608/887608 co-relation queries the response was YES. [2023-08-25 05:25:49,579 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. [2023-08-25 05:25:49,614 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 315 selfloop transitions, 564 changer transitions 12/897 dead transitions. [2023-08-25 05:25:49,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 897 transitions, 41150 flow [2023-08-25 05:25:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-25 05:25:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-25 05:25:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3940 transitions. [2023-08-25 05:25:49,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42479784366576817 [2023-08-25 05:25:49,618 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3940 transitions. [2023-08-25 05:25:49,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3940 transitions. [2023-08-25 05:25:49,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:25:49,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3940 transitions. [2023-08-25 05:25:49,621 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) [2023-08-25 05:25:49,626 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) [2023-08-25 05:25:49,627 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) [2023-08-25 05:25:49,627 INFO L175 Difference]: Start difference. First operand has 425 places, 726 transitions, 34760 flow. Second operand 35 states and 3940 transitions. [2023-08-25 05:25:49,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 897 transitions, 41150 flow [2023-08-25 05:25:53,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 897 transitions, 40873 flow, removed 104 selfloop flow, removed 14 redundant places. [2023-08-25 05:25:53,482 INFO L231 Difference]: Finished difference. Result has 454 places, 803 transitions, 40265 flow [2023-08-25 05:25:53,483 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} [2023-08-25 05:25:53,483 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 414 predicate places. [2023-08-25 05:25:53,483 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 803 transitions, 40265 flow [2023-08-25 05:25:53,484 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) [2023-08-25 05:25:53,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:25:53,484 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] [2023-08-25 05:25:53,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 05:25:53,688 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 [2023-08-25 05:25:53,689 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:25:53,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:25:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1334500716, now seen corresponding path program 18 times [2023-08-25 05:25:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:25:53,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787655946] [2023-08-25 05:25:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:25:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:25:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:25:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:25:54,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787655946] [2023-08-25 05:25:54,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787655946] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:25:54,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614564065] [2023-08-25 05:25:54,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:25:54,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:25:54,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:25:54,148 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) [2023-08-25 05:25:54,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 05:25:54,256 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:25:54,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:25:54,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:25:54,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:25:54,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:25:54,506 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:26:12,126 WARN L234 SmtUtils]: Spent 7.51s 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) [2023-08-25 05:26:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:16,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614564065] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:26:16,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:26:16,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:26:16,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823960058] [2023-08-25 05:26:16,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:26:16,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:26:16,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:26:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:26:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:26:16,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:26:16,733 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) [2023-08-25 05:26:16,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:26:16,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:26:16,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:26:24,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-25 05:26:26,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-25 05:26:28,829 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 [] [2023-08-25 05:26:33,287 INFO L124 PetriNetUnfolderBase]: 3125/6373 cut-off events. [2023-08-25 05:26:33,287 INFO L125 PetriNetUnfolderBase]: For 970930/970934 co-relation queries the response was YES. [2023-08-25 05:26:33,357 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. [2023-08-25 05:26:33,402 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 342 selfloop transitions, 538 changer transitions 10/896 dead transitions. [2023-08-25 05:26:33,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 896 transitions, 43628 flow [2023-08-25 05:26:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 05:26:33,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 05:26:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2717 transitions. [2023-08-25 05:26:33,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272012578616352 [2023-08-25 05:26:33,406 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2717 transitions. [2023-08-25 05:26:33,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2717 transitions. [2023-08-25 05:26:33,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:26:33,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2717 transitions. [2023-08-25 05:26:33,409 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) [2023-08-25 05:26:33,413 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) [2023-08-25 05:26:33,414 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) [2023-08-25 05:26:33,414 INFO L175 Difference]: Start difference. First operand has 454 places, 803 transitions, 40265 flow. Second operand 24 states and 2717 transitions. [2023-08-25 05:26:33,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 896 transitions, 43628 flow [2023-08-25 05:26:37,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 896 transitions, 43271 flow, removed 142 selfloop flow, removed 13 redundant places. [2023-08-25 05:26:37,790 INFO L231 Difference]: Finished difference. Result has 471 places, 825 transitions, 43118 flow [2023-08-25 05:26:37,791 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} [2023-08-25 05:26:37,792 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 431 predicate places. [2023-08-25 05:26:37,792 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 825 transitions, 43118 flow [2023-08-25 05:26:37,792 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) [2023-08-25 05:26:37,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:26:37,792 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] [2023-08-25 05:26:37,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-25 05:26:37,994 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 [2023-08-25 05:26:37,994 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:26:37,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:26:37,994 INFO L85 PathProgramCache]: Analyzing trace with hash 944335176, now seen corresponding path program 19 times [2023-08-25 05:26:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:26:37,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443107596] [2023-08-25 05:26:37,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:26:37,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:26:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:26:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:38,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:26:38,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443107596] [2023-08-25 05:26:38,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443107596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:26:38,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223314591] [2023-08-25 05:26:38,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:26:38,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:26:38,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:26:38,497 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) [2023-08-25 05:26:38,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 05:26:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:26:38,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:26:38,598 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:26:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:38,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:26:52,555 WARN L234 SmtUtils]: Spent 5.97s 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) [2023-08-25 05:26:54,834 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:26:54,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223314591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:26:54,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:26:54,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:26:54,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567607314] [2023-08-25 05:26:54,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:26:54,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:26:54,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:26:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:26:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:26:54,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:26:54,839 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) [2023-08-25 05:26:54,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:26:54,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:26:54,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:27:02,773 INFO L124 PetriNetUnfolderBase]: 3286/6664 cut-off events. [2023-08-25 05:27:02,773 INFO L125 PetriNetUnfolderBase]: For 1125551/1125551 co-relation queries the response was YES. [2023-08-25 05:27:02,850 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. [2023-08-25 05:27:02,896 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 300 selfloop transitions, 615 changer transitions 11/932 dead transitions. [2023-08-25 05:27:02,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 932 transitions, 46887 flow [2023-08-25 05:27:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 05:27:02,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 05:27:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3173 transitions. [2023-08-25 05:27:02,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42762803234501345 [2023-08-25 05:27:02,900 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3173 transitions. [2023-08-25 05:27:02,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3173 transitions. [2023-08-25 05:27:02,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:27:02,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3173 transitions. [2023-08-25 05:27:02,902 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) [2023-08-25 05:27:02,905 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) [2023-08-25 05:27:02,906 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) [2023-08-25 05:27:02,906 INFO L175 Difference]: Start difference. First operand has 471 places, 825 transitions, 43118 flow. Second operand 28 states and 3173 transitions. [2023-08-25 05:27:02,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 932 transitions, 46887 flow [2023-08-25 05:27:07,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 932 transitions, 46694 flow, removed 58 selfloop flow, removed 10 redundant places. [2023-08-25 05:27:07,853 INFO L231 Difference]: Finished difference. Result has 493 places, 844 transitions, 46400 flow [2023-08-25 05:27:07,855 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} [2023-08-25 05:27:07,855 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 453 predicate places. [2023-08-25 05:27:07,855 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 844 transitions, 46400 flow [2023-08-25 05:27:07,856 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) [2023-08-25 05:27:07,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:27:07,856 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] [2023-08-25 05:27:07,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-25 05:27:08,062 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 [2023-08-25 05:27:08,062 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:27:08,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:27:08,063 INFO L85 PathProgramCache]: Analyzing trace with hash 138533650, now seen corresponding path program 20 times [2023-08-25 05:27:08,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:27:08,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440222477] [2023-08-25 05:27:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:27:08,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:27:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:27:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:08,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:27:08,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440222477] [2023-08-25 05:27:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440222477] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:27:08,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263823316] [2023-08-25 05:27:08,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:27:08,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:27:08,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:27:08,550 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) [2023-08-25 05:27:08,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 05:27:08,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:27:08,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:27:08,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:27:08,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:27:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:08,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:27:23,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:23,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263823316] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:27:23,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:27:23,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:27:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142164368] [2023-08-25 05:27:23,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:27:23,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:27:23,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:27:23,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:27:23,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:27:23,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:27:23,536 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) [2023-08-25 05:27:23,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:27:23,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:27:23,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:27:32,239 WARN L234 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 113 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-25 05:27:39,848 INFO L124 PetriNetUnfolderBase]: 3415/6902 cut-off events. [2023-08-25 05:27:39,848 INFO L125 PetriNetUnfolderBase]: For 1297634/1297646 co-relation queries the response was YES. [2023-08-25 05:27:39,918 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. [2023-08-25 05:27:39,963 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 304 selfloop transitions, 652 changer transitions 8/970 dead transitions. [2023-08-25 05:27:39,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 970 transitions, 50945 flow [2023-08-25 05:27:39,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-25 05:27:39,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-25 05:27:39,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 4058 transitions. [2023-08-25 05:27:39,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42536687631027253 [2023-08-25 05:27:39,967 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 4058 transitions. [2023-08-25 05:27:39,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 4058 transitions. [2023-08-25 05:27:39,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:27:39,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 4058 transitions. [2023-08-25 05:27:39,970 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) [2023-08-25 05:27:39,974 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) [2023-08-25 05:27:39,975 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) [2023-08-25 05:27:39,975 INFO L175 Difference]: Start difference. First operand has 493 places, 844 transitions, 46400 flow. Second operand 36 states and 4058 transitions. [2023-08-25 05:27:39,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 970 transitions, 50945 flow [2023-08-25 05:27:45,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 970 transitions, 50741 flow, removed 32 selfloop flow, removed 19 redundant places. [2023-08-25 05:27:45,780 INFO L231 Difference]: Finished difference. Result has 514 places, 874 transitions, 50006 flow [2023-08-25 05:27:45,781 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} [2023-08-25 05:27:45,781 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 474 predicate places. [2023-08-25 05:27:45,781 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 874 transitions, 50006 flow [2023-08-25 05:27:45,781 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) [2023-08-25 05:27:45,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:27:45,781 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] [2023-08-25 05:27:45,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-25 05:27:45,982 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 [2023-08-25 05:27:45,982 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:27:45,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:27:45,983 INFO L85 PathProgramCache]: Analyzing trace with hash -292147358, now seen corresponding path program 21 times [2023-08-25 05:27:45,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:27:45,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801481580] [2023-08-25 05:27:45,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:27:45,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:27:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:27:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:27:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801481580] [2023-08-25 05:27:46,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801481580] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:27:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056675302] [2023-08-25 05:27:46,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:27:46,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:27:46,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:27:46,451 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) [2023-08-25 05:27:46,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 05:27:46,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 05:27:46,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:27:46,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:27:46,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:27:46,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:27:46,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:28:05,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:05,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056675302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:28:05,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:28:05,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:28:05,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637814827] [2023-08-25 05:28:05,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:28:05,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:28:05,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:28:05,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:28:05,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=366, Unknown=1, NotChecked=0, Total=462 [2023-08-25 05:28:05,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:28:05,712 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) [2023-08-25 05:28:05,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:28:05,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:28:05,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:28:14,754 INFO L124 PetriNetUnfolderBase]: 3419/6957 cut-off events. [2023-08-25 05:28:14,755 INFO L125 PetriNetUnfolderBase]: For 1404121/1404121 co-relation queries the response was YES. [2023-08-25 05:28:14,833 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. [2023-08-25 05:28:14,880 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 347 selfloop transitions, 580 changer transitions 10/943 dead transitions. [2023-08-25 05:28:14,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 943 transitions, 52528 flow [2023-08-25 05:28:14,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 05:28:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 05:28:14,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3147 transitions. [2023-08-25 05:28:14,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42412398921832883 [2023-08-25 05:28:14,882 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3147 transitions. [2023-08-25 05:28:14,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3147 transitions. [2023-08-25 05:28:14,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:28:14,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3147 transitions. [2023-08-25 05:28:14,885 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) [2023-08-25 05:28:14,888 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) [2023-08-25 05:28:14,888 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) [2023-08-25 05:28:14,889 INFO L175 Difference]: Start difference. First operand has 514 places, 874 transitions, 50006 flow. Second operand 28 states and 3147 transitions. [2023-08-25 05:28:14,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 943 transitions, 52528 flow [2023-08-25 05:28:21,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 943 transitions, 52283 flow, removed 40 selfloop flow, removed 24 redundant places. [2023-08-25 05:28:21,670 INFO L231 Difference]: Finished difference. Result has 522 places, 879 transitions, 52179 flow [2023-08-25 05:28:21,671 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} [2023-08-25 05:28:21,671 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 482 predicate places. [2023-08-25 05:28:21,671 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 879 transitions, 52179 flow [2023-08-25 05:28:21,672 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) [2023-08-25 05:28:21,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:28:21,672 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] [2023-08-25 05:28:21,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-25 05:28:21,873 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 [2023-08-25 05:28:21,873 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:28:21,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:28:21,873 INFO L85 PathProgramCache]: Analyzing trace with hash 573863446, now seen corresponding path program 22 times [2023-08-25 05:28:21,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:28:21,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798168938] [2023-08-25 05:28:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:28:21,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:28:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:28:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:22,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:28:22,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798168938] [2023-08-25 05:28:22,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798168938] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:28:22,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134621001] [2023-08-25 05:28:22,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:28:22,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:28:22,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:28:22,376 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) [2023-08-25 05:28:22,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 05:28:22,478 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:28:22,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:28:22,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:28:22,481 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:28:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:22,811 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:28:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134621001] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:28:40,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:28:40,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:28:40,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95271829] [2023-08-25 05:28:40,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:28:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:28:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:28:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:28:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:28:40,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:28:40,361 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) [2023-08-25 05:28:40,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:28:40,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:28:40,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:28:46,265 INFO L124 PetriNetUnfolderBase]: 3489/7070 cut-off events. [2023-08-25 05:28:46,266 INFO L125 PetriNetUnfolderBase]: For 1554388/1554388 co-relation queries the response was YES. [2023-08-25 05:28:46,339 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. [2023-08-25 05:28:46,383 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 370 selfloop transitions, 605 changer transitions 10/991 dead transitions. [2023-08-25 05:28:46,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 991 transitions, 56679 flow [2023-08-25 05:28:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-25 05:28:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-25 05:28:46,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2954 transitions. [2023-08-25 05:28:46,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42873730043541364 [2023-08-25 05:28:46,386 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2954 transitions. [2023-08-25 05:28:46,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2954 transitions. [2023-08-25 05:28:46,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:28:46,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2954 transitions. [2023-08-25 05:28:46,388 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) [2023-08-25 05:28:46,391 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) [2023-08-25 05:28:46,391 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) [2023-08-25 05:28:46,391 INFO L175 Difference]: Start difference. First operand has 522 places, 879 transitions, 52179 flow. Second operand 26 states and 2954 transitions. [2023-08-25 05:28:46,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 991 transitions, 56679 flow [2023-08-25 05:28:53,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 991 transitions, 56560 flow, removed 13 selfloop flow, removed 18 redundant places. [2023-08-25 05:28:53,242 INFO L231 Difference]: Finished difference. Result has 535 places, 906 transitions, 56378 flow [2023-08-25 05:28:53,243 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} [2023-08-25 05:28:53,244 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 495 predicate places. [2023-08-25 05:28:53,244 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 906 transitions, 56378 flow [2023-08-25 05:28:53,244 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) [2023-08-25 05:28:53,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:28:53,244 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] [2023-08-25 05:28:53,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 05:28:53,444 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 [2023-08-25 05:28:53,445 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:28:53,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:28:53,445 INFO L85 PathProgramCache]: Analyzing trace with hash 15660342, now seen corresponding path program 23 times [2023-08-25 05:28:53,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:28:53,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859194433] [2023-08-25 05:28:53,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:28:53,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:28:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:28:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:54,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:28:54,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859194433] [2023-08-25 05:28:54,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859194433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:28:54,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128807238] [2023-08-25 05:28:54,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:28:54,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:28:54,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:28:54,044 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) [2023-08-25 05:28:54,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 05:28:54,138 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 05:28:54,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:28:54,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:28:54,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:28:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:28:54,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:29:07,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:07,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128807238] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:29:07,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:29:07,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:29:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533275470] [2023-08-25 05:29:07,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:29:07,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:29:07,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:29:07,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:29:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:29:07,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:29:07,496 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) [2023-08-25 05:29:07,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:29:07,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:29:07,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:29:15,002 INFO L124 PetriNetUnfolderBase]: 3686/7450 cut-off events. [2023-08-25 05:29:15,003 INFO L125 PetriNetUnfolderBase]: For 1825759/1825763 co-relation queries the response was YES. [2023-08-25 05:29:15,088 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. [2023-08-25 05:29:15,139 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 339 selfloop transitions, 696 changer transitions 10/1051 dead transitions. [2023-08-25 05:29:15,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 1051 transitions, 63405 flow [2023-08-25 05:29:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 05:29:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 05:29:15,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3292 transitions. [2023-08-25 05:29:15,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42836694860117114 [2023-08-25 05:29:15,142 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3292 transitions. [2023-08-25 05:29:15,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3292 transitions. [2023-08-25 05:29:15,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:29:15,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3292 transitions. [2023-08-25 05:29:15,145 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) [2023-08-25 05:29:15,148 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) [2023-08-25 05:29:15,148 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) [2023-08-25 05:29:15,148 INFO L175 Difference]: Start difference. First operand has 535 places, 906 transitions, 56378 flow. Second operand 29 states and 3292 transitions. [2023-08-25 05:29:15,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 1051 transitions, 63405 flow [2023-08-25 05:29:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 1051 transitions, 63186 flow, removed 71 selfloop flow, removed 10 redundant places. [2023-08-25 05:29:23,826 INFO L231 Difference]: Finished difference. Result has 561 places, 962 transitions, 62401 flow [2023-08-25 05:29:23,827 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} [2023-08-25 05:29:23,828 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 521 predicate places. [2023-08-25 05:29:23,828 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 962 transitions, 62401 flow [2023-08-25 05:29:23,828 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) [2023-08-25 05:29:23,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:29:23,828 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] [2023-08-25 05:29:23,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-25 05:29:24,033 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 [2023-08-25 05:29:24,034 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:29:24,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:29:24,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2018071822, now seen corresponding path program 24 times [2023-08-25 05:29:24,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:29:24,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060356431] [2023-08-25 05:29:24,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:29:24,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:29:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:29:24,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:24,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:29:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060356431] [2023-08-25 05:29:24,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060356431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:29:24,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433178823] [2023-08-25 05:29:24,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:29:24,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:29:24,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:29:24,510 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) [2023-08-25 05:29:24,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 05:29:24,620 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 05:29:24,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:29:24,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:29:24,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:29:24,871 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:24,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:29:42,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:29:42,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433178823] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:29:42,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:29:42,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:29:42,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464149955] [2023-08-25 05:29:42,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:29:42,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:29:42,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:29:42,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:29:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:29:42,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:29:42,216 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) [2023-08-25 05:29:42,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:29:42,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:29:42,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:29:51,525 INFO L124 PetriNetUnfolderBase]: 3825/7703 cut-off events. [2023-08-25 05:29:51,525 INFO L125 PetriNetUnfolderBase]: For 2029659/2029667 co-relation queries the response was YES. [2023-08-25 05:29:51,620 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. [2023-08-25 05:29:51,675 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 334 selfloop transitions, 735 changer transitions 11/1086 dead transitions. [2023-08-25 05:29:51,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 1086 transitions, 67521 flow [2023-08-25 05:29:51,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 05:29:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 05:29:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3853 transitions. [2023-08-25 05:29:51,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42763596004439514 [2023-08-25 05:29:51,678 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3853 transitions. [2023-08-25 05:29:51,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3853 transitions. [2023-08-25 05:29:51,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:29:51,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3853 transitions. [2023-08-25 05:29:51,681 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) [2023-08-25 05:29:51,685 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) [2023-08-25 05:29:51,686 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) [2023-08-25 05:29:51,686 INFO L175 Difference]: Start difference. First operand has 561 places, 962 transitions, 62401 flow. Second operand 34 states and 3853 transitions. [2023-08-25 05:29:51,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 1086 transitions, 67521 flow [2023-08-25 05:30:01,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 1086 transitions, 66938 flow, removed 215 selfloop flow, removed 16 redundant places. [2023-08-25 05:30:01,449 INFO L231 Difference]: Finished difference. Result has 582 places, 986 transitions, 66016 flow [2023-08-25 05:30:01,451 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} [2023-08-25 05:30:01,451 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 542 predicate places. [2023-08-25 05:30:01,451 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 986 transitions, 66016 flow [2023-08-25 05:30:01,452 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) [2023-08-25 05:30:01,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:30:01,452 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] [2023-08-25 05:30:01,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 05:30:01,652 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 [2023-08-25 05:30:01,653 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:30:01,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:30:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1712724082, now seen corresponding path program 25 times [2023-08-25 05:30:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:30:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321540684] [2023-08-25 05:30:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:30:01,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:30:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:30:02,146 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:30:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321540684] [2023-08-25 05:30:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321540684] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:30:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679405427] [2023-08-25 05:30:02,146 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:30:02,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:30:02,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:30:02,147 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) [2023-08-25 05:30:02,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 05:30:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:30:02,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:30:02,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:30:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:02,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:30:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:19,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679405427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:30:19,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:30:19,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2023-08-25 05:30:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656079726] [2023-08-25 05:30:19,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:30:19,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 05:30:19,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:30:19,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 05:30:19,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-08-25 05:30:19,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:30:19,458 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) [2023-08-25 05:30:19,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:30:19,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:30:19,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:30:27,236 INFO L124 PetriNetUnfolderBase]: 3765/7662 cut-off events. [2023-08-25 05:30:27,236 INFO L125 PetriNetUnfolderBase]: For 2126674/2126678 co-relation queries the response was YES. [2023-08-25 05:30:27,338 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. [2023-08-25 05:30:27,397 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 392 selfloop transitions, 665 changer transitions 10/1073 dead transitions. [2023-08-25 05:30:27,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 1073 transitions, 69506 flow [2023-08-25 05:30:27,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 05:30:27,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 05:30:27,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2724 transitions. [2023-08-25 05:30:27,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42830188679245285 [2023-08-25 05:30:27,400 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2724 transitions. [2023-08-25 05:30:27,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2724 transitions. [2023-08-25 05:30:27,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:30:27,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2724 transitions. [2023-08-25 05:30:27,403 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) [2023-08-25 05:30:27,406 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) [2023-08-25 05:30:27,406 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) [2023-08-25 05:30:27,406 INFO L175 Difference]: Start difference. First operand has 582 places, 986 transitions, 66016 flow. Second operand 24 states and 2724 transitions. [2023-08-25 05:30:27,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 1073 transitions, 69506 flow [2023-08-25 05:30:38,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 1073 transitions, 69180 flow, removed 92 selfloop flow, removed 19 redundant places. [2023-08-25 05:30:38,110 INFO L231 Difference]: Finished difference. Result has 591 places, 996 transitions, 68977 flow [2023-08-25 05:30:38,111 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} [2023-08-25 05:30:38,111 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 551 predicate places. [2023-08-25 05:30:38,111 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 996 transitions, 68977 flow [2023-08-25 05:30:38,111 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) [2023-08-25 05:30:38,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:30:38,112 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] [2023-08-25 05:30:38,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-25 05:30:38,312 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 [2023-08-25 05:30:38,312 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:30:38,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:30:38,313 INFO L85 PathProgramCache]: Analyzing trace with hash 18680762, now seen corresponding path program 26 times [2023-08-25 05:30:38,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:30:38,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296097653] [2023-08-25 05:30:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:30:38,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:30:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:30:38,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:38,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:30:38,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296097653] [2023-08-25 05:30:38,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296097653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:30:38,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291705314] [2023-08-25 05:30:38,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 05:30:38,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:30:38,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:30:38,811 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) [2023-08-25 05:30:38,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-25 05:30:38,925 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:30:38,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:30:38,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:30:38,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:30:39,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:30:39,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:31:01,025 WARN L234 SmtUtils]: Spent 10.19s 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) [2023-08-25 05:31:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:31:03,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291705314] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:31:03,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:31:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:31:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299834862] [2023-08-25 05:31:03,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:31:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:31:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:31:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:31:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:31:03,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:31:03,106 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) [2023-08-25 05:31:03,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:31:03,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:31:03,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:31:09,887 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 [] [2023-08-25 05:31:14,462 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 [] [2023-08-25 05:31:17,879 INFO L124 PetriNetUnfolderBase]: 3995/8069 cut-off events. [2023-08-25 05:31:17,880 INFO L125 PetriNetUnfolderBase]: For 2436851/2436862 co-relation queries the response was YES. [2023-08-25 05:31:17,984 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. [2023-08-25 05:31:18,047 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 381 selfloop transitions, 747 changer transitions 10/1144 dead transitions. [2023-08-25 05:31:18,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1144 transitions, 76410 flow [2023-08-25 05:31:18,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 05:31:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 05:31:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3611 transitions. [2023-08-25 05:31:18,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258254716981132 [2023-08-25 05:31:18,052 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3611 transitions. [2023-08-25 05:31:18,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3611 transitions. [2023-08-25 05:31:18,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:31:18,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3611 transitions. [2023-08-25 05:31:18,055 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) [2023-08-25 05:31:18,060 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) [2023-08-25 05:31:18,060 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) [2023-08-25 05:31:18,060 INFO L175 Difference]: Start difference. First operand has 591 places, 996 transitions, 68977 flow. Second operand 32 states and 3611 transitions. [2023-08-25 05:31:18,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 1144 transitions, 76410 flow [2023-08-25 05:31:30,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 603 places, 1144 transitions, 76160 flow, removed 56 selfloop flow, removed 18 redundant places. [2023-08-25 05:31:30,098 INFO L231 Difference]: Finished difference. Result has 611 places, 1053 transitions, 75692 flow [2023-08-25 05:31:30,099 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} [2023-08-25 05:31:30,099 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 571 predicate places. [2023-08-25 05:31:30,100 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 1053 transitions, 75692 flow [2023-08-25 05:31:30,100 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) [2023-08-25 05:31:30,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:31:30,100 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] [2023-08-25 05:31:30,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-25 05:31:30,300 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 [2023-08-25 05:31:30,301 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:31:30,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:31:30,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1833619580, now seen corresponding path program 27 times [2023-08-25 05:31:30,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:31:30,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184763853] [2023-08-25 05:31:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:31:30,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:31:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:31:30,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:31:30,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:31:30,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184763853] [2023-08-25 05:31:30,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184763853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:31:30,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059735033] [2023-08-25 05:31:30,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 05:31:30,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:31:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:31:30,765 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) [2023-08-25 05:31:30,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-25 05:31:30,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 05:31:30,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:31:30,875 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:31:30,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:31:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:31:31,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:31:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:31:47,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059735033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:31:47,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:31:47,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:31:47,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639408663] [2023-08-25 05:31:47,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:31:47,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:31:47,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:31:47,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:31:47,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:31:47,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:31:47,531 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) [2023-08-25 05:31:47,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:31:47,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:31:47,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:32:00,887 INFO L124 PetriNetUnfolderBase]: 4020/8202 cut-off events. [2023-08-25 05:32:00,887 INFO L125 PetriNetUnfolderBase]: For 2637223/2637227 co-relation queries the response was YES. [2023-08-25 05:32:00,988 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. [2023-08-25 05:32:01,047 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 364 selfloop transitions, 792 changer transitions 11/1173 dead transitions. [2023-08-25 05:32:01,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 1173 transitions, 80484 flow [2023-08-25 05:32:01,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 05:32:01,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 05:32:01,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3844 transitions. [2023-08-25 05:32:01,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42663706992230854 [2023-08-25 05:32:01,050 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3844 transitions. [2023-08-25 05:32:01,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3844 transitions. [2023-08-25 05:32:01,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:32:01,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3844 transitions. [2023-08-25 05:32:01,054 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) [2023-08-25 05:32:01,059 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) [2023-08-25 05:32:01,059 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) [2023-08-25 05:32:01,059 INFO L175 Difference]: Start difference. First operand has 611 places, 1053 transitions, 75692 flow. Second operand 34 states and 3844 transitions. [2023-08-25 05:32:01,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 1173 transitions, 80484 flow [2023-08-25 05:32:13,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 1173 transitions, 80229 flow, removed 75 selfloop flow, removed 11 redundant places. [2023-08-25 05:32:13,260 INFO L231 Difference]: Finished difference. Result has 634 places, 1073 transitions, 79552 flow [2023-08-25 05:32:13,261 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} [2023-08-25 05:32:13,261 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 594 predicate places. [2023-08-25 05:32:13,261 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 1073 transitions, 79552 flow [2023-08-25 05:32:13,262 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) [2023-08-25 05:32:13,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:32:13,262 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] [2023-08-25 05:32:13,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-25 05:32:13,467 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 [2023-08-25 05:32:13,467 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:32:13,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:32:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash 23643812, now seen corresponding path program 28 times [2023-08-25 05:32:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:32:13,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530904514] [2023-08-25 05:32:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:32:13,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:32:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:32:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:32:13,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:32:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530904514] [2023-08-25 05:32:13,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530904514] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:32:13,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130502741] [2023-08-25 05:32:13,942 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 05:32:13,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:32:13,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:32:13,943 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) [2023-08-25 05:32:13,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-25 05:32:14,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 05:32:14,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:32:14,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:32:14,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:32:14,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:32:14,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:32:35,451 WARN L234 SmtUtils]: Spent 7.05s 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) [2023-08-25 05:32:39,195 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:32:39,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130502741] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:32:39,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:32:39,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:32:39,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65706687] [2023-08-25 05:32:39,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:32:39,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:32:39,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:32:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:32:39,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=353, Unknown=1, NotChecked=0, Total=462 [2023-08-25 05:32:39,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:32:39,198 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) [2023-08-25 05:32:39,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:32:39,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:32:39,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:32:47,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-25 05:32:53,871 INFO L124 PetriNetUnfolderBase]: 4235/8580 cut-off events. [2023-08-25 05:32:53,871 INFO L125 PetriNetUnfolderBase]: For 2967872/2967880 co-relation queries the response was YES. [2023-08-25 05:32:53,988 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. [2023-08-25 05:32:54,056 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 367 selfloop transitions, 844 changer transitions 7/1224 dead transitions. [2023-08-25 05:32:54,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 1224 transitions, 88333 flow [2023-08-25 05:32:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-25 05:32:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-25 05:32:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3727 transitions. [2023-08-25 05:32:54,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4261863922241281 [2023-08-25 05:32:54,059 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3727 transitions. [2023-08-25 05:32:54,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3727 transitions. [2023-08-25 05:32:54,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:32:54,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3727 transitions. [2023-08-25 05:32:54,063 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) [2023-08-25 05:32:54,067 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) [2023-08-25 05:32:54,068 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) [2023-08-25 05:32:54,068 INFO L175 Difference]: Start difference. First operand has 634 places, 1073 transitions, 79552 flow. Second operand 33 states and 3727 transitions. [2023-08-25 05:32:54,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 1224 transitions, 88333 flow [2023-08-25 05:33:08,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 1224 transitions, 88040 flow, removed 42 selfloop flow, removed 29 redundant places. [2023-08-25 05:33:08,812 INFO L231 Difference]: Finished difference. Result has 642 places, 1131 transitions, 87735 flow [2023-08-25 05:33:08,813 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} [2023-08-25 05:33:08,813 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 602 predicate places. [2023-08-25 05:33:08,813 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 1131 transitions, 87735 flow [2023-08-25 05:33:08,814 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) [2023-08-25 05:33:08,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:33:08,814 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] [2023-08-25 05:33:08,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-25 05:33:09,019 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 [2023-08-25 05:33:09,019 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:33:09,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:33:09,020 INFO L85 PathProgramCache]: Analyzing trace with hash 263196676, now seen corresponding path program 29 times [2023-08-25 05:33:09,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:33:09,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584683566] [2023-08-25 05:33:09,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:33:09,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:33:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:33:09,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:33:09,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:33:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584683566] [2023-08-25 05:33:09,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584683566] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:33:09,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854060701] [2023-08-25 05:33:09,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 05:33:09,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:33:09,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:33:09,515 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) [2023-08-25 05:33:09,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-25 05:33:09,621 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 05:33:09,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:33:09,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:33:09,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:33:09,924 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:33:09,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:33:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:33:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854060701] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:33:24,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:33:24,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:33:24,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680336001] [2023-08-25 05:33:24,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:33:24,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:33:24,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:33:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:33:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:33:24,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:33:24,194 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) [2023-08-25 05:33:24,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:33:24,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:33:24,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:33:38,273 INFO L124 PetriNetUnfolderBase]: 4296/8764 cut-off events. [2023-08-25 05:33:38,274 INFO L125 PetriNetUnfolderBase]: For 3288181/3288185 co-relation queries the response was YES. [2023-08-25 05:33:38,486 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. [2023-08-25 05:33:38,557 INFO L140 encePairwiseOnDemand]: 254/265 looper letters, 414 selfloop transitions, 804 changer transitions 11/1235 dead transitions. [2023-08-25 05:33:38,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 1235 transitions, 92656 flow [2023-08-25 05:33:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 05:33:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 05:33:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3381 transitions. [2023-08-25 05:33:38,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252830188679245 [2023-08-25 05:33:38,560 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3381 transitions. [2023-08-25 05:33:38,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3381 transitions. [2023-08-25 05:33:38,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:33:38,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3381 transitions. [2023-08-25 05:33:38,563 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) [2023-08-25 05:33:38,566 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) [2023-08-25 05:33:38,566 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) [2023-08-25 05:33:38,566 INFO L175 Difference]: Start difference. First operand has 642 places, 1131 transitions, 87735 flow. Second operand 30 states and 3381 transitions. [2023-08-25 05:33:38,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 1235 transitions, 92656 flow [2023-08-25 05:33:55,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 1235 transitions, 92266 flow, removed 111 selfloop flow, removed 27 redundant places. [2023-08-25 05:33:55,768 INFO L231 Difference]: Finished difference. Result has 648 places, 1153 transitions, 91691 flow [2023-08-25 05:33:55,769 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} [2023-08-25 05:33:55,770 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 608 predicate places. [2023-08-25 05:33:55,770 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 1153 transitions, 91691 flow [2023-08-25 05:33:55,770 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) [2023-08-25 05:33:55,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:33:55,770 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] [2023-08-25 05:33:55,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-25 05:33:55,971 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 [2023-08-25 05:33:55,971 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:33:55,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:33:55,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1425785070, now seen corresponding path program 30 times [2023-08-25 05:33:55,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:33:55,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251601947] [2023-08-25 05:33:55,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:33:55,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:33:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:33:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:33:56,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:33:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251601947] [2023-08-25 05:33:56,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251601947] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:33:56,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192298496] [2023-08-25 05:33:56,325 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 05:33:56,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:33:56,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:33:56,326 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) [2023-08-25 05:33:56,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-25 05:33:56,449 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-25 05:33:56,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 05:33:56,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:33:56,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:33:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:33:56,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:34:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:34:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192298496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 05:34:09,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 05:34:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 05:34:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320873734] [2023-08-25 05:34:09,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 05:34:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 05:34:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 05:34:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 05:34:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-08-25 05:34:09,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 265 [2023-08-25 05:34:09,986 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) [2023-08-25 05:34:09,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 05:34:09,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 265 [2023-08-25 05:34:09,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 05:34:19,959 INFO L124 PetriNetUnfolderBase]: 4311/8814 cut-off events. [2023-08-25 05:34:19,959 INFO L125 PetriNetUnfolderBase]: For 3441944/3441952 co-relation queries the response was YES. [2023-08-25 05:34:20,080 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. [2023-08-25 05:34:20,151 INFO L140 encePairwiseOnDemand]: 255/265 looper letters, 436 selfloop transitions, 764 changer transitions 7/1213 dead transitions. [2023-08-25 05:34:20,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 1213 transitions, 94771 flow [2023-08-25 05:34:20,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 05:34:20,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 05:34:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2815 transitions. [2023-08-25 05:34:20,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249056603773585 [2023-08-25 05:34:20,154 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2815 transitions. [2023-08-25 05:34:20,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2815 transitions. [2023-08-25 05:34:20,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 05:34:20,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2815 transitions. [2023-08-25 05:34:20,157 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) [2023-08-25 05:34:20,161 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) [2023-08-25 05:34:20,161 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) [2023-08-25 05:34:20,162 INFO L175 Difference]: Start difference. First operand has 648 places, 1153 transitions, 91691 flow. Second operand 25 states and 2815 transitions. [2023-08-25 05:34:20,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 1213 transitions, 94771 flow [2023-08-25 05:34:37,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 1213 transitions, 94459 flow, removed 85 selfloop flow, removed 21 redundant places. [2023-08-25 05:34:37,716 INFO L231 Difference]: Finished difference. Result has 654 places, 1155 transitions, 94131 flow [2023-08-25 05:34:37,717 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} [2023-08-25 05:34:37,717 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 614 predicate places. [2023-08-25 05:34:37,717 INFO L495 AbstractCegarLoop]: Abstraction has has 654 places, 1155 transitions, 94131 flow [2023-08-25 05:34:37,718 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) [2023-08-25 05:34:37,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 05:34:37,718 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] [2023-08-25 05:34:37,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-25 05:34:37,919 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 [2023-08-25 05:34:37,919 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-25 05:34:37,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 05:34:37,919 INFO L85 PathProgramCache]: Analyzing trace with hash -9314002, now seen corresponding path program 31 times [2023-08-25 05:34:37,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 05:34:37,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003149430] [2023-08-25 05:34:37,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 05:34:37,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 05:34:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:34:38,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:34:38,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 05:34:38,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003149430] [2023-08-25 05:34:38,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003149430] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 05:34:38,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853494123] [2023-08-25 05:34:38,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 05:34:38,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 05:34:38,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 05:34:38,480 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) [2023-08-25 05:34:38,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-25 05:34:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 05:34:38,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-25 05:34:38,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 05:34:38,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 05:34:38,865 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 05:34:57,713 WARN L234 SmtUtils]: Spent 5.82s 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) Received shutdown request... [2023-08-25 05:35:03,596 WARN L266 SmtUtils]: Removed 5 from assertion stack [2023-08-25 05:35:03,599 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (24 of 25 remaining) [2023-08-25 05:35:03,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-25 05:35:03,632 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 05:35:03,632 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 05:35:03,799 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 [2023-08-25 05:35:03,800 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 24 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. [2023-08-25 05:35:03,801 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2023-08-25 05:35:03,801 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2023-08-25 05:35:03,801 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2023-08-25 05:35:03,801 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2023-08-25 05:35:03,801 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2023-08-25 05:35:03,802 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2023-08-25 05:35:03,803 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2023-08-25 05:35:03,803 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2023-08-25 05:35:03,803 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2023-08-25 05:35:03,803 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2023-08-25 05:35:03,803 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2023-08-25 05:35:03,803 INFO L445 BasicCegarLoop]: Path program histogram: [31, 4, 3, 1, 1, 1, 1] [2023-08-25 05:35:03,806 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 05:35:03,806 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 05:35:03,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 05:35:03 BasicIcfg [2023-08-25 05:35:03,808 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 05:35:03,809 INFO L158 Benchmark]: Toolchain (without parser) took 827957.19ms. Allocated memory was 343.9MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 320.2MB in the beginning and 1.1GB in the end (delta: -797.9MB). Peak memory consumption was 2.5GB. Max. memory is 16.0GB. [2023-08-25 05:35:03,809 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 343.9MB. Free memory is still 320.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 05:35:03,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.90ms. Allocated memory is still 343.9MB. Free memory was 319.7MB in the beginning and 308.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 05:35:03,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.72ms. Allocated memory is still 343.9MB. Free memory was 308.8MB in the beginning and 307.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 05:35:03,809 INFO L158 Benchmark]: Boogie Preprocessor took 38.61ms. Allocated memory is still 343.9MB. Free memory was 307.4MB in the beginning and 305.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 05:35:03,810 INFO L158 Benchmark]: RCFGBuilder took 500.04ms. Allocated memory is still 343.9MB. Free memory was 305.8MB in the beginning and 290.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-25 05:35:03,810 INFO L158 Benchmark]: TraceAbstraction took 827104.08ms. Allocated memory was 343.9MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 290.0MB in the beginning and 1.1GB in the end (delta: -828.1MB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. [2023-08-25 05:35:03,811 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 343.9MB. Free memory is still 320.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 256.90ms. Allocated memory is still 343.9MB. Free memory was 319.7MB in the beginning and 308.8MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.72ms. Allocated memory is still 343.9MB. Free memory was 308.8MB in the beginning and 307.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 38.61ms. Allocated memory is still 343.9MB. Free memory was 307.4MB in the beginning and 305.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 500.04ms. Allocated memory is still 343.9MB. Free memory was 305.8MB in the beginning and 290.6MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 827104.08ms. Allocated memory was 343.9MB in the beginning and 3.6GB in the end (delta: 3.3GB). Free memory was 290.0MB in the beginning and 1.1GB in the end (delta: -828.1MB). Peak memory consumption was 2.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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 PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 123ms.. - 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: 827.0s, OverallIterations: 42, TraceHistogramMax: 3, PathProgramHistogramMax: 31, EmptinessCheckTime: 0.0s, AutomataDifference: 410.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 3614 SdHoareTripleChecker+Valid, 110.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3614 mSDsluCounter, 718 SdHoareTripleChecker+Invalid, 104.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 566 mSDsCounter, 846 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31690 IncrementalHoareTripleChecker+Invalid, 32544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 846 mSolverCounterUnsat, 152 mSDtfsCounter, 31690 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2322 GetRequests, 1069 SyntacticMatches, 123 SemanticMatches, 1130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12685 ImplicationChecksByTransitivity, 233.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94131occurred in iteration=41, InterpolantAutomatonStates: 974, 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, 1.7s SatisfiabilityAnalysisTime, 375.3s InterpolantComputationTime, 1682 NumberOfCodeBlocks, 1682 NumberOfCodeBlocksAsserted, 115 NumberOfCheckSat, 2394 ConstructedInterpolants, 3 QuantifiedInterpolants, 90487 SizeOfPredicates, 148 NumberOfNonLiveVariables, 6126 ConjunctsInSsa, 868 ConjunctsInUnsatCore, 115 InterpolantComputations, 4 PerfectInterpolantSequences, 2/420 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