/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:57:58,701 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:57:58,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 07:57:58,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:57:58,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:57:58,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:57:58,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:57:58,807 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:57:58,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:57:58,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:57:58,808 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:57:58,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:57:58,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:57:58,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:57:58,809 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:57:58,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:57:58,810 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:57:58,810 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:57:58,811 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:57:58,811 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:57:58,811 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:57:58,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:57:58,812 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:57:58,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:57:58,813 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:57:58,813 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:57:58,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:57:58,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:57:58,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:57:58,815 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:57:58,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:57:58,815 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:57:58,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:57:58,816 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:57:58,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:57:58,816 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:57:59,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:57:59,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:57:59,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:57:59,200 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:57:59,200 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:57:59,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-26 07:58:00,514 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:58:00,778 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:58:00,778 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-08-26 07:58:00,794 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5891e9e1/35239e08ee0d44ab8385f7b67a927178/FLAG5b00c452e [2023-08-26 07:58:00,812 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5891e9e1/35239e08ee0d44ab8385f7b67a927178 [2023-08-26 07:58:00,814 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:58:00,815 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:58:00,816 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:58:00,817 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:58:00,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:58:00,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:58:00" (1/1) ... [2023-08-26 07:58:00,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c962cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:00, skipping insertion in model container [2023-08-26 07:58:00,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:58:00" (1/1) ... [2023-08-26 07:58:00,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:58:01,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:58:01,280 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:58:01,306 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:58:01,308 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:58:01,314 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-26 07:58:01,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:58:01,420 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:58:01,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01 WrapperNode [2023-08-26 07:58:01,421 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:58:01,422 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:58:01,422 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:58:01,422 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:58:01,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,449 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,494 INFO L138 Inliner]: procedures = 270, calls = 42, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 265 [2023-08-26 07:58:01,495 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:58:01,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:58:01,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:58:01,496 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:58:01,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,527 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,528 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:58:01,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:58:01,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:58:01,568 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:58:01,579 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (1/1) ... [2023-08-26 07:58:01,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:58:01,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:01,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 07:58:01,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 07:58:01,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:58:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:58:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:58:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:58:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:58:01,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:58:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:58:01,655 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:58:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:58:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:58:01,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:58:01,657 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 07:58:01,828 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:58:01,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:58:02,197 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:58:02,209 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:58:02,209 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-26 07:58:02,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:58:02 BoogieIcfgContainer [2023-08-26 07:58:02,212 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:58:02,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:58:02,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:58:02,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:58:02,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:58:00" (1/3) ... [2023-08-26 07:58:02,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16297f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:58:02, skipping insertion in model container [2023-08-26 07:58:02,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:58:01" (2/3) ... [2023-08-26 07:58:02,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16297f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:58:02, skipping insertion in model container [2023-08-26 07:58:02,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:58:02" (3/3) ... [2023-08-26 07:58:02,220 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-08-26 07:58:02,237 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:58:02,237 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-26 07:58:02,237 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:58:02,332 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:58:02,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:02,482 INFO L124 PetriNetUnfolderBase]: 48/394 cut-off events. [2023-08-26 07:58:02,482 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:58:02,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 394 events. 48/394 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1614 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2023-08-26 07:58:02,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:02,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:02,511 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:58:02,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:02,523 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:02,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:02,588 INFO L124 PetriNetUnfolderBase]: 48/394 cut-off events. [2023-08-26 07:58:02,589 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:58:02,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 394 events. 48/394 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1614 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2023-08-26 07:58:02,606 INFO L119 LiptonReduction]: Number of co-enabled transitions 26596 [2023-08-26 07:58:05,889 INFO L134 LiptonReduction]: Checked pairs total: 102196 [2023-08-26 07:58:05,889 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-08-26 07:58:05,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:58:05,906 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;@30e867c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:58:05,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-26 07:58:05,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:58:05,914 INFO L124 PetriNetUnfolderBase]: 19/88 cut-off events. [2023-08-26 07:58:05,914 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:58:05,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:05,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:05,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:05,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:05,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1597504909, now seen corresponding path program 1 times [2023-08-26 07:58:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:05,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457029187] [2023-08-26 07:58:05,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:05,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:06,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:06,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:06,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457029187] [2023-08-26 07:58:06,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457029187] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:06,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:58:06,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:58:06,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131201302] [2023-08-26 07:58:06,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:06,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:58:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:06,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:58:06,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:58:06,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-26 07:58:06,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 134 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:06,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:06,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-26 07:58:06,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:06,547 INFO L124 PetriNetUnfolderBase]: 440/1647 cut-off events. [2023-08-26 07:58:06,547 INFO L125 PetriNetUnfolderBase]: For 5/7 co-relation queries the response was YES. [2023-08-26 07:58:06,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1647 events. 440/1647 cut-off events. For 5/7 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12008 event pairs, 396 based on Foata normal form. 167/1600 useless extension candidates. Maximal degree in co-relation 2414. Up to 860 conditions per place. [2023-08-26 07:58:06,558 INFO L140 encePairwiseOnDemand]: 441/465 looper letters, 45 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-08-26 07:58:06,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 114 transitions, 330 flow [2023-08-26 07:58:06,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:58:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:58:06,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 780 transitions. [2023-08-26 07:58:06,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2023-08-26 07:58:06,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 780 transitions. [2023-08-26 07:58:06,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 780 transitions. [2023-08-26 07:58:06,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:06,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 780 transitions. [2023-08-26 07:58:06,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:06,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:06,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:06,592 INFO L175 Difference]: Start difference. First operand has 112 places, 134 transitions, 276 flow. Second operand 3 states and 780 transitions. [2023-08-26 07:58:06,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 114 transitions, 330 flow [2023-08-26 07:58:06,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 114 transitions, 330 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:58:06,599 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 246 flow [2023-08-26 07:58:06,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2023-08-26 07:58:06,604 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-26 07:58:06,604 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 246 flow [2023-08-26 07:58:06,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:06,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:06,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:06,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:58:06,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:06,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1671413252, now seen corresponding path program 1 times [2023-08-26 07:58:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:06,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148571511] [2023-08-26 07:58:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:06,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:06,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148571511] [2023-08-26 07:58:06,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148571511] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:06,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686714127] [2023-08-26 07:58:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:06,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:06,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:06,725 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:06,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 07:58:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:06,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 07:58:06,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:06,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:58:06,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:58:06,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686714127] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:06,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:58:06,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-26 07:58:06,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404912407] [2023-08-26 07:58:06,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:06,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:58:06,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:06,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:58:06,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:58:06,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-26 07:58:06,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:06,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:06,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-26 07:58:06,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:07,162 INFO L124 PetriNetUnfolderBase]: 417/1581 cut-off events. [2023-08-26 07:58:07,163 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 07:58:07,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1581 events. 417/1581 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 11884 event pairs, 0 based on Foata normal form. 0/1372 useless extension candidates. Maximal degree in co-relation 2443. Up to 822 conditions per place. [2023-08-26 07:58:07,173 INFO L140 encePairwiseOnDemand]: 462/465 looper letters, 64 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2023-08-26 07:58:07,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 133 transitions, 416 flow [2023-08-26 07:58:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:58:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:58:07,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2023-08-26 07:58:07,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556989247311828 [2023-08-26 07:58:07,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2023-08-26 07:58:07,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2023-08-26 07:58:07,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:07,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2023-08-26 07:58:07,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,183 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,185 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 246 flow. Second operand 3 states and 777 transitions. [2023-08-26 07:58:07,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 133 transitions, 416 flow [2023-08-26 07:58:07,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 133 transitions, 412 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 07:58:07,193 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 250 flow [2023-08-26 07:58:07,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2023-08-26 07:58:07,198 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 5 predicate places. [2023-08-26 07:58:07,200 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 250 flow [2023-08-26 07:58:07,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:07,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:07,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:07,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:07,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:07,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:07,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1889792067, now seen corresponding path program 1 times [2023-08-26 07:58:07,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:07,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530899400] [2023-08-26 07:58:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:07,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:07,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530899400] [2023-08-26 07:58:07,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530899400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568188003] [2023-08-26 07:58:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:07,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:07,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 07:58:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:07,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:58:07,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:07,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:07,629 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:07,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568188003] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:07,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:07,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:58:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128550033] [2023-08-26 07:58:07,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:07,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:58:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:58:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:58:07,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-26 07:58:07,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 238.85714285714286) internal successors, (1672), 7 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:07,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-26 07:58:07,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:07,939 INFO L124 PetriNetUnfolderBase]: 438/1640 cut-off events. [2023-08-26 07:58:07,939 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 07:58:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2559 conditions, 1640 events. 438/1640 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 12030 event pairs, 396 based on Foata normal form. 3/1450 useless extension candidates. Maximal degree in co-relation 2532. Up to 842 conditions per place. [2023-08-26 07:58:07,947 INFO L140 encePairwiseOnDemand]: 462/465 looper letters, 45 selfloop transitions, 5 changer transitions 0/117 dead transitions. [2023-08-26 07:58:07,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 362 flow [2023-08-26 07:58:07,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:58:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:58:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1475 transitions. [2023-08-26 07:58:07,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286738351254481 [2023-08-26 07:58:07,952 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1475 transitions. [2023-08-26 07:58:07,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1475 transitions. [2023-08-26 07:58:07,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:07,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1475 transitions. [2023-08-26 07:58:07,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,962 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,963 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 250 flow. Second operand 6 states and 1475 transitions. [2023-08-26 07:58:07,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 362 flow [2023-08-26 07:58:07,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 358 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:58:07,968 INFO L231 Difference]: Finished difference. Result has 123 places, 117 transitions, 282 flow [2023-08-26 07:58:07,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=123, PETRI_TRANSITIONS=117} [2023-08-26 07:58:07,970 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 11 predicate places. [2023-08-26 07:58:07,970 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 117 transitions, 282 flow [2023-08-26 07:58:07,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 238.85714285714286) internal successors, (1672), 7 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:07,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:07,971 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:07,979 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:08,177 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,SelfDestructingSolverStorable2 [2023-08-26 07:58:08,177 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:08,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2131338961, now seen corresponding path program 2 times [2023-08-26 07:58:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:08,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382888929] [2023-08-26 07:58:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:08,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:08,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:08,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382888929] [2023-08-26 07:58:08,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382888929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:08,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370002522] [2023-08-26 07:58:08,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:58:08,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:08,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:08,281 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:08,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 07:58:08,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 07:58:08,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:58:08,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 07:58:08,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:08,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:58:08,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:58:08,463 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:08,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:58:08,502 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:08,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:58:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 07:58:08,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:58:08,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370002522] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:08,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:58:08,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-26 07:58:08,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346435055] [2023-08-26 07:58:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:08,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:58:08,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:58:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-26 07:58:08,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 465 [2023-08-26 07:58:08,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 117 transitions, 282 flow. Second operand has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:08,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:08,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 465 [2023-08-26 07:58:08,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:10,111 INFO L124 PetriNetUnfolderBase]: 4242/8998 cut-off events. [2023-08-26 07:58:10,111 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-26 07:58:10,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17843 conditions, 8998 events. 4242/8998 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 64069 event pairs, 1580 based on Foata normal form. 0/7559 useless extension candidates. Maximal degree in co-relation 17808. Up to 3948 conditions per place. [2023-08-26 07:58:10,160 INFO L140 encePairwiseOnDemand]: 436/465 looper letters, 348 selfloop transitions, 56 changer transitions 0/412 dead transitions. [2023-08-26 07:58:10,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 412 transitions, 1704 flow [2023-08-26 07:58:10,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:58:10,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:58:10,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1357 transitions. [2023-08-26 07:58:10,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4863799283154122 [2023-08-26 07:58:10,169 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1357 transitions. [2023-08-26 07:58:10,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1357 transitions. [2023-08-26 07:58:10,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:10,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1357 transitions. [2023-08-26 07:58:10,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.16666666666666) internal successors, (1357), 6 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:10,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:10,179 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:10,179 INFO L175 Difference]: Start difference. First operand has 123 places, 117 transitions, 282 flow. Second operand 6 states and 1357 transitions. [2023-08-26 07:58:10,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 412 transitions, 1704 flow [2023-08-26 07:58:10,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 412 transitions, 1690 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 07:58:10,190 INFO L231 Difference]: Finished difference. Result has 131 places, 172 transitions, 639 flow [2023-08-26 07:58:10,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=639, PETRI_PLACES=131, PETRI_TRANSITIONS=172} [2023-08-26 07:58:10,192 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 19 predicate places. [2023-08-26 07:58:10,195 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 172 transitions, 639 flow [2023-08-26 07:58:10,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 6 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:10,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:10,196 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:10,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:10,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:10,401 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:10,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2131338731, now seen corresponding path program 1 times [2023-08-26 07:58:10,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:10,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075593464] [2023-08-26 07:58:10,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:10,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:10,521 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:10,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:10,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075593464] [2023-08-26 07:58:10,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075593464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:10,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295873725] [2023-08-26 07:58:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:10,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:10,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:10,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 07:58:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:10,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 07:58:10,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:10,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:10,693 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:10,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295873725] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:10,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:10,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 07:58:10,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783418749] [2023-08-26 07:58:10,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:10,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:58:10,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:58:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 07:58:10,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-26 07:58:10,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 172 transitions, 639 flow. Second operand has 13 states, 13 states have (on average 238.53846153846155) internal successors, (3101), 13 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:10,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:10,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-26 07:58:10,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:11,297 INFO L124 PetriNetUnfolderBase]: 977/4169 cut-off events. [2023-08-26 07:58:11,298 INFO L125 PetriNetUnfolderBase]: For 540/604 co-relation queries the response was YES. [2023-08-26 07:58:11,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7926 conditions, 4169 events. 977/4169 cut-off events. For 540/604 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 37757 event pairs, 588 based on Foata normal form. 42/3718 useless extension candidates. Maximal degree in co-relation 7869. Up to 1951 conditions per place. [2023-08-26 07:58:11,328 INFO L140 encePairwiseOnDemand]: 462/465 looper letters, 69 selfloop transitions, 11 changer transitions 0/178 dead transitions. [2023-08-26 07:58:11,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 178 transitions, 835 flow [2023-08-26 07:58:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:58:11,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:58:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2906 transitions. [2023-08-26 07:58:11,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207885304659499 [2023-08-26 07:58:11,335 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2906 transitions. [2023-08-26 07:58:11,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2906 transitions. [2023-08-26 07:58:11,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:11,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2906 transitions. [2023-08-26 07:58:11,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 242.16666666666666) internal successors, (2906), 12 states have internal predecessors, (2906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:11,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 465.0) internal successors, (6045), 13 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:11,357 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 465.0) internal successors, (6045), 13 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:11,357 INFO L175 Difference]: Start difference. First operand has 131 places, 172 transitions, 639 flow. Second operand 12 states and 2906 transitions. [2023-08-26 07:58:11,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 178 transitions, 835 flow [2023-08-26 07:58:11,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 178 transitions, 835 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:58:11,365 INFO L231 Difference]: Finished difference. Result has 148 places, 178 transitions, 723 flow [2023-08-26 07:58:11,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=723, PETRI_PLACES=148, PETRI_TRANSITIONS=178} [2023-08-26 07:58:11,366 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 36 predicate places. [2023-08-26 07:58:11,366 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 178 transitions, 723 flow [2023-08-26 07:58:11,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.53846153846155) internal successors, (3101), 13 states have internal predecessors, (3101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:11,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:11,367 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:11,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:11,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:11,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:11,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:11,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1043939733, now seen corresponding path program 2 times [2023-08-26 07:58:11,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:11,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131623544] [2023-08-26 07:58:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:11,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:58:11,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:11,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131623544] [2023-08-26 07:58:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131623544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:58:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:58:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146739539] [2023-08-26 07:58:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:11,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:58:11,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:58:11,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:58:11,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 465 [2023-08-26 07:58:11,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 178 transitions, 723 flow. Second operand has 7 states, 7 states have (on average 140.85714285714286) internal successors, (986), 7 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:11,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:11,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 465 [2023-08-26 07:58:11,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:13,291 INFO L124 PetriNetUnfolderBase]: 4932/10458 cut-off events. [2023-08-26 07:58:13,291 INFO L125 PetriNetUnfolderBase]: For 4194/4194 co-relation queries the response was YES. [2023-08-26 07:58:13,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26408 conditions, 10458 events. 4932/10458 cut-off events. For 4194/4194 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 76479 event pairs, 2187 based on Foata normal form. 0/9239 useless extension candidates. Maximal degree in co-relation 26326. Up to 7947 conditions per place. [2023-08-26 07:58:13,405 INFO L140 encePairwiseOnDemand]: 457/465 looper letters, 317 selfloop transitions, 14 changer transitions 11/350 dead transitions. [2023-08-26 07:58:13,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 350 transitions, 1964 flow [2023-08-26 07:58:13,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 07:58:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 07:58:13,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1224 transitions. [2023-08-26 07:58:13,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376036866359447 [2023-08-26 07:58:13,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1224 transitions. [2023-08-26 07:58:13,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1224 transitions. [2023-08-26 07:58:13,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:13,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1224 transitions. [2023-08-26 07:58:13,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 174.85714285714286) internal successors, (1224), 7 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 465.0) internal successors, (3720), 8 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 465.0) internal successors, (3720), 8 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,418 INFO L175 Difference]: Start difference. First operand has 148 places, 178 transitions, 723 flow. Second operand 7 states and 1224 transitions. [2023-08-26 07:58:13,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 350 transitions, 1964 flow [2023-08-26 07:58:13,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 350 transitions, 1916 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 07:58:13,439 INFO L231 Difference]: Finished difference. Result has 154 places, 190 transitions, 801 flow [2023-08-26 07:58:13,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=801, PETRI_PLACES=154, PETRI_TRANSITIONS=190} [2023-08-26 07:58:13,440 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2023-08-26 07:58:13,440 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 190 transitions, 801 flow [2023-08-26 07:58:13,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 140.85714285714286) internal successors, (986), 7 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:13,441 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:13,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:58:13,441 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:13,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:13,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1990497275, now seen corresponding path program 1 times [2023-08-26 07:58:13,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:13,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722437111] [2023-08-26 07:58:13,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:13,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:58:13,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:13,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722437111] [2023-08-26 07:58:13,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722437111] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:13,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302227164] [2023-08-26 07:58:13,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:13,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:13,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:13,508 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:13,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 07:58:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:13,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:58:13,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:13,635 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:58:13,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:13,651 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:58:13,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302227164] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:13,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:13,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 07:58:13,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795124542] [2023-08-26 07:58:13,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:13,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:58:13,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:13,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:58:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:58:13,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 465 [2023-08-26 07:58:13,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 190 transitions, 801 flow. Second operand has 7 states, 7 states have (on average 239.57142857142858) internal successors, (1677), 7 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:13,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 465 [2023-08-26 07:58:13,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:13,721 INFO L124 PetriNetUnfolderBase]: 37/153 cut-off events. [2023-08-26 07:58:13,721 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-08-26 07:58:13,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 153 events. 37/153 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 379 event pairs, 0 based on Foata normal form. 19/164 useless extension candidates. Maximal degree in co-relation 382. Up to 74 conditions per place. [2023-08-26 07:58:13,722 INFO L140 encePairwiseOnDemand]: 462/465 looper letters, 35 selfloop transitions, 2 changer transitions 20/79 dead transitions. [2023-08-26 07:58:13,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 79 transitions, 407 flow [2023-08-26 07:58:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:58:13,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:58:13,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 990 transitions. [2023-08-26 07:58:13,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.532258064516129 [2023-08-26 07:58:13,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 990 transitions. [2023-08-26 07:58:13,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 990 transitions. [2023-08-26 07:58:13,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:13,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 990 transitions. [2023-08-26 07:58:13,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 247.5) internal successors, (990), 4 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,734 INFO L175 Difference]: Start difference. First operand has 154 places, 190 transitions, 801 flow. Second operand 4 states and 990 transitions. [2023-08-26 07:58:13,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 79 transitions, 407 flow [2023-08-26 07:58:13,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 311 flow, removed 4 selfloop flow, removed 17 redundant places. [2023-08-26 07:58:13,736 INFO L231 Difference]: Finished difference. Result has 78 places, 48 transitions, 151 flow [2023-08-26 07:58:13,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=78, PETRI_TRANSITIONS=48} [2023-08-26 07:58:13,737 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -34 predicate places. [2023-08-26 07:58:13,737 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 48 transitions, 151 flow [2023-08-26 07:58:13,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 239.57142857142858) internal successors, (1677), 7 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:13,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:13,737 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:13,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:13,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:13,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:13,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:13,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1683307432, now seen corresponding path program 1 times [2023-08-26 07:58:13,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:13,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335705833] [2023-08-26 07:58:13,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:13,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:58:14,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:14,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335705833] [2023-08-26 07:58:14,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335705833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:14,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:58:14,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:58:14,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090230] [2023-08-26 07:58:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:14,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:58:14,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:58:14,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:58:14,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 465 [2023-08-26 07:58:14,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 48 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:14,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 465 [2023-08-26 07:58:14,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:14,355 INFO L124 PetriNetUnfolderBase]: 57/165 cut-off events. [2023-08-26 07:58:14,356 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2023-08-26 07:58:14,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 396 conditions, 165 events. 57/165 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 249 event pairs, 46 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 379. Up to 133 conditions per place. [2023-08-26 07:58:14,357 INFO L140 encePairwiseOnDemand]: 459/465 looper letters, 47 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-26 07:58:14,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 277 flow [2023-08-26 07:58:14,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:58:14,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:58:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 985 transitions. [2023-08-26 07:58:14,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35304659498207885 [2023-08-26 07:58:14,369 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 985 transitions. [2023-08-26 07:58:14,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 985 transitions. [2023-08-26 07:58:14,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:14,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 985 transitions. [2023-08-26 07:58:14,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.16666666666666) internal successors, (985), 6 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,383 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,383 INFO L175 Difference]: Start difference. First operand has 78 places, 48 transitions, 151 flow. Second operand 6 states and 985 transitions. [2023-08-26 07:58:14,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 277 flow [2023-08-26 07:58:14,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 55 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:58:14,386 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 156 flow [2023-08-26 07:58:14,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-08-26 07:58:14,389 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -44 predicate places. [2023-08-26 07:58:14,389 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 156 flow [2023-08-26 07:58:14,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:14,402 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:14,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:58:14,403 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-26 07:58:14,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1861883172, now seen corresponding path program 1 times [2023-08-26 07:58:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:14,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98592072] [2023-08-26 07:58:14,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:14,899 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:58:14,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:14,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98592072] [2023-08-26 07:58:14,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98592072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:14,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:58:14,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:58:14,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132137194] [2023-08-26 07:58:14,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:14,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:58:14,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:58:14,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 07:58:14,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 465 [2023-08-26 07:58:14,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:14,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 465 [2023-08-26 07:58:14,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:14,968 INFO L124 PetriNetUnfolderBase]: 55/159 cut-off events. [2023-08-26 07:58:14,969 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-08-26 07:58:14,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 159 events. 55/159 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 234 event pairs, 46 based on Foata normal form. 3/162 useless extension candidates. Maximal degree in co-relation 380. Up to 133 conditions per place. [2023-08-26 07:58:14,969 INFO L140 encePairwiseOnDemand]: 460/465 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2023-08-26 07:58:14,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 54 transitions, 276 flow [2023-08-26 07:58:14,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:58:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:58:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 984 transitions. [2023-08-26 07:58:14,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35268817204301073 [2023-08-26 07:58:14,973 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 984 transitions. [2023-08-26 07:58:14,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 984 transitions. [2023-08-26 07:58:14,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:14,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 984 transitions. [2023-08-26 07:58:14,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 465.0) internal successors, (3255), 7 states have internal predecessors, (3255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,981 INFO L175 Difference]: Start difference. First operand has 68 places, 47 transitions, 156 flow. Second operand 6 states and 984 transitions. [2023-08-26 07:58:14,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 54 transitions, 276 flow [2023-08-26 07:58:14,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 54 transitions, 266 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-26 07:58:14,982 INFO L231 Difference]: Finished difference. Result has 67 places, 0 transitions, 0 flow [2023-08-26 07:58:14,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=67, PETRI_TRANSITIONS=0} [2023-08-26 07:58:14,984 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -45 predicate places. [2023-08-26 07:58:14,984 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 0 transitions, 0 flow [2023-08-26 07:58:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:14,986 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (18 of 19 remaining) [2023-08-26 07:58:14,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-26 07:58:14,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-26 07:58:14,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-26 07:58:14,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-26 07:58:14,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (13 of 19 remaining) [2023-08-26 07:58:14,987 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONASSERT (7 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONASSERT (4 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-26 07:58:14,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-26 07:58:14,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-26 07:58:14,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-26 07:58:14,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:58:14,989 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-08-26 07:58:14,991 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:58:14,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:15,031 INFO L124 PetriNetUnfolderBase]: 48/394 cut-off events. [2023-08-26 07:58:15,031 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:58:15,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 394 events. 48/394 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1614 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2023-08-26 07:58:15,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 248 places, 278 transitions, 564 flow [2023-08-26 07:58:15,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 273 transitions, 551 flow [2023-08-26 07:58:15,037 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:58:15,037 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 273 transitions, 551 flow [2023-08-26 07:58:15,037 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 273 transitions, 551 flow [2023-08-26 07:58:15,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 273 transitions, 551 flow [2023-08-26 07:58:15,066 INFO L124 PetriNetUnfolderBase]: 47/389 cut-off events. [2023-08-26 07:58:15,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:58:15,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 389 events. 47/389 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1553 event pairs, 0 based on Foata normal form. 0/318 useless extension candidates. Maximal degree in co-relation 230. Up to 8 conditions per place. [2023-08-26 07:58:15,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 26596 [2023-08-26 07:58:17,846 INFO L134 LiptonReduction]: Checked pairs total: 100870 [2023-08-26 07:58:17,847 INFO L136 LiptonReduction]: Total number of compositions: 185 [2023-08-26 07:58:17,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:58:17,848 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;@30e867c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:58:17,848 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:58:17,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:58:17,850 INFO L124 PetriNetUnfolderBase]: 9/40 cut-off events. [2023-08-26 07:58:17,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:58:17,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:17,851 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-08-26 07:58:17,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:58:17,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:17,851 INFO L85 PathProgramCache]: Analyzing trace with hash 905131913, now seen corresponding path program 1 times [2023-08-26 07:58:17,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:17,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502752735] [2023-08-26 07:58:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:17,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:58:17,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:17,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502752735] [2023-08-26 07:58:17,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502752735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:17,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:58:17,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:58:17,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530017097] [2023-08-26 07:58:17,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:17,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:58:17,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:17,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:58:17,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:58:17,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 463 [2023-08-26 07:58:17,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 131 transitions, 267 flow. Second operand has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:17,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:17,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 463 [2023-08-26 07:58:17,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:18,054 INFO L124 PetriNetUnfolderBase]: 420/1607 cut-off events. [2023-08-26 07:58:18,055 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:58:18,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 1607 events. 420/1607 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11668 event pairs, 378 based on Foata normal form. 148/1566 useless extension candidates. Maximal degree in co-relation 2340. Up to 820 conditions per place. [2023-08-26 07:58:18,061 INFO L140 encePairwiseOnDemand]: 439/463 looper letters, 24 selfloop transitions, 2 changer transitions 54/111 dead transitions. [2023-08-26 07:58:18,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 111 transitions, 315 flow [2023-08-26 07:58:18,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:58:18,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:58:18,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 777 transitions. [2023-08-26 07:58:18,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5593952483801296 [2023-08-26 07:58:18,064 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 777 transitions. [2023-08-26 07:58:18,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 777 transitions. [2023-08-26 07:58:18,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:18,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 777 transitions. [2023-08-26 07:58:18,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,069 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,069 INFO L175 Difference]: Start difference. First operand has 111 places, 131 transitions, 267 flow. Second operand 3 states and 777 transitions. [2023-08-26 07:58:18,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 111 transitions, 315 flow [2023-08-26 07:58:18,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 111 transitions, 315 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:58:18,071 INFO L231 Difference]: Finished difference. Result has 113 places, 57 transitions, 129 flow [2023-08-26 07:58:18,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=113, PETRI_TRANSITIONS=57} [2023-08-26 07:58:18,072 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, 2 predicate places. [2023-08-26 07:58:18,072 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 57 transitions, 129 flow [2023-08-26 07:58:18,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:18,073 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:18,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 07:58:18,073 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:58:18,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:18,074 INFO L85 PathProgramCache]: Analyzing trace with hash 375555570, now seen corresponding path program 1 times [2023-08-26 07:58:18,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:18,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187782214] [2023-08-26 07:58:18,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:18,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:58:18,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:18,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187782214] [2023-08-26 07:58:18,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187782214] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:18,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382238507] [2023-08-26 07:58:18,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:18,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:18,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:18,105 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:18,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 07:58:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:18,193 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:58:18,194 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:58:18,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:18,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:58:18,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382238507] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:18,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:18,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:58:18,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549733497] [2023-08-26 07:58:18,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:18,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:58:18,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:18,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:58:18,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:58:18,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 463 [2023-08-26 07:58:18,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 57 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 238.57142857142858) internal successors, (1670), 7 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:18,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 463 [2023-08-26 07:58:18,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:18,276 INFO L124 PetriNetUnfolderBase]: 59/260 cut-off events. [2023-08-26 07:58:18,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:58:18,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 260 events. 59/260 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 892 event pairs, 54 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 403. Up to 136 conditions per place. [2023-08-26 07:58:18,277 INFO L140 encePairwiseOnDemand]: 460/463 looper letters, 24 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-26 07:58:18,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 199 flow [2023-08-26 07:58:18,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:58:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:58:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1454 transitions. [2023-08-26 07:58:18,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233981281497481 [2023-08-26 07:58:18,281 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1454 transitions. [2023-08-26 07:58:18,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1454 transitions. [2023-08-26 07:58:18,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:18,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1454 transitions. [2023-08-26 07:58:18,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.33333333333334) internal successors, (1454), 6 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,290 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,290 INFO L175 Difference]: Start difference. First operand has 113 places, 57 transitions, 129 flow. Second operand 6 states and 1454 transitions. [2023-08-26 07:58:18,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 199 flow [2023-08-26 07:58:18,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 195 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 07:58:18,291 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 161 flow [2023-08-26 07:58:18,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-26 07:58:18,292 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -44 predicate places. [2023-08-26 07:58:18,292 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 161 flow [2023-08-26 07:58:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 238.57142857142858) internal successors, (1670), 7 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:18,293 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-08-26 07:58:18,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-26 07:58:18,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:18,498 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:58:18,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:18,499 INFO L85 PathProgramCache]: Analyzing trace with hash 2122844617, now seen corresponding path program 2 times [2023-08-26 07:58:18,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:18,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937537942] [2023-08-26 07:58:18,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:18,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:18,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:58:18,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937537942] [2023-08-26 07:58:18,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937537942] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334194812] [2023-08-26 07:58:18,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:58:18,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:18,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:18,557 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:18,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 07:58:18,643 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 07:58:18,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:58:18,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 07:58:18,645 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:58:18,659 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 07:58:18,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334194812] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:18,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:18,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 07:58:18,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085353042] [2023-08-26 07:58:18,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:18,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:58:18,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:18,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:58:18,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 07:58:18,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 463 [2023-08-26 07:58:18,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 161 flow. Second operand has 13 states, 13 states have (on average 238.30769230769232) internal successors, (3098), 13 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:18,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 463 [2023-08-26 07:58:18,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:18,787 INFO L124 PetriNetUnfolderBase]: 59/266 cut-off events. [2023-08-26 07:58:18,787 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 07:58:18,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 266 events. 59/266 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 892 event pairs, 54 based on Foata normal form. 6/236 useless extension candidates. Maximal degree in co-relation 394. Up to 136 conditions per place. [2023-08-26 07:58:18,788 INFO L140 encePairwiseOnDemand]: 460/463 looper letters, 24 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2023-08-26 07:58:18,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 267 flow [2023-08-26 07:58:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:58:18,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:58:18,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2885 transitions. [2023-08-26 07:58:18,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192584593232541 [2023-08-26 07:58:18,796 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2885 transitions. [2023-08-26 07:58:18,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2885 transitions. [2023-08-26 07:58:18,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:18,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2885 transitions. [2023-08-26 07:58:18,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 240.41666666666666) internal successors, (2885), 12 states have internal predecessors, (2885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,812 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,812 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 161 flow. Second operand 12 states and 2885 transitions. [2023-08-26 07:58:18,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 267 flow [2023-08-26 07:58:18,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 66 transitions, 253 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 07:58:18,814 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 231 flow [2023-08-26 07:58:18,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=231, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2023-08-26 07:58:18,815 INFO L281 CegarLoopForPetriNet]: 111 programPoint places, -28 predicate places. [2023-08-26 07:58:18,815 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 231 flow [2023-08-26 07:58:18,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.30769230769232) internal successors, (3098), 13 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:18,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:18,816 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-08-26 07:58:18,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:19,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:19,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:58:19,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:19,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1514432809, now seen corresponding path program 3 times [2023-08-26 07:58:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:19,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609436827] [2023-08-26 07:58:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:19,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:19,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:58:19,048 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:58:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:58:19,091 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:58:19,091 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:58:19,093 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:58:19,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 07:58:19,093 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2023-08-26 07:58:19,094 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:58:19,094 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:58:19,094 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:58:19,154 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:58:19,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 389 transitions, 796 flow [2023-08-26 07:58:19,231 INFO L124 PetriNetUnfolderBase]: 80/652 cut-off events. [2023-08-26 07:58:19,232 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-08-26 07:58:19,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 652 events. 80/652 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3285 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 396. Up to 12 conditions per place. [2023-08-26 07:58:19,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 346 places, 389 transitions, 796 flow [2023-08-26 07:58:19,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 346 places, 389 transitions, 796 flow [2023-08-26 07:58:19,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:58:19,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 346 places, 389 transitions, 796 flow [2023-08-26 07:58:19,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 346 places, 389 transitions, 796 flow [2023-08-26 07:58:19,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 346 places, 389 transitions, 796 flow [2023-08-26 07:58:19,320 INFO L124 PetriNetUnfolderBase]: 80/652 cut-off events. [2023-08-26 07:58:19,321 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-08-26 07:58:19,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 652 events. 80/652 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3285 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 396. Up to 12 conditions per place. [2023-08-26 07:58:19,358 INFO L119 LiptonReduction]: Number of co-enabled transitions 79352 [2023-08-26 07:58:22,855 INFO L134 LiptonReduction]: Checked pairs total: 270080 [2023-08-26 07:58:22,855 INFO L136 LiptonReduction]: Total number of compositions: 255 [2023-08-26 07:58:22,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:58:22,857 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;@30e867c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:58:22,857 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 07:58:22,861 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:58:22,861 INFO L124 PetriNetUnfolderBase]: 14/80 cut-off events. [2023-08-26 07:58:22,862 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:58:22,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:22,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:22,862 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:58:22,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:22,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1208753874, now seen corresponding path program 1 times [2023-08-26 07:58:22,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:22,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609451524] [2023-08-26 07:58:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:22,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:22,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:22,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609451524] [2023-08-26 07:58:22,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609451524] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:22,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:58:22,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:58:22,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415346791] [2023-08-26 07:58:22,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:22,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:58:22,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:22,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:58:22,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:58:22,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-26 07:58:22,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 196 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:22,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:22,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-26 07:58:22,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:25,884 INFO L124 PetriNetUnfolderBase]: 17084/40028 cut-off events. [2023-08-26 07:58:25,884 INFO L125 PetriNetUnfolderBase]: For 244/320 co-relation queries the response was YES. [2023-08-26 07:58:26,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64911 conditions, 40028 events. 17084/40028 cut-off events. For 244/320 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 444094 event pairs, 15876 based on Foata normal form. 4763/39943 useless extension candidates. Maximal degree in co-relation 22729. Up to 24758 conditions per place. [2023-08-26 07:58:26,235 INFO L140 encePairwiseOnDemand]: 610/644 looper letters, 65 selfloop transitions, 2 changer transitions 0/166 dead transitions. [2023-08-26 07:58:26,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 484 flow [2023-08-26 07:58:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:58:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:58:26,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1095 transitions. [2023-08-26 07:58:26,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5667701863354038 [2023-08-26 07:58:26,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1095 transitions. [2023-08-26 07:58:26,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1095 transitions. [2023-08-26 07:58:26,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:26,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1095 transitions. [2023-08-26 07:58:26,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 365.0) internal successors, (1095), 3 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:26,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:26,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:26,244 INFO L175 Difference]: Start difference. First operand has 164 places, 196 transitions, 410 flow. Second operand 3 states and 1095 transitions. [2023-08-26 07:58:26,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 484 flow [2023-08-26 07:58:26,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 166 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:58:26,248 INFO L231 Difference]: Finished difference. Result has 167 places, 166 transitions, 360 flow [2023-08-26 07:58:26,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=360, PETRI_PLACES=167, PETRI_TRANSITIONS=166} [2023-08-26 07:58:26,249 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 3 predicate places. [2023-08-26 07:58:26,249 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 166 transitions, 360 flow [2023-08-26 07:58:26,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:26,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:26,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:26,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 07:58:26,250 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:58:26,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:26,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1931739716, now seen corresponding path program 1 times [2023-08-26 07:58:26,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:26,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738756925] [2023-08-26 07:58:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:26,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:26,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:26,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738756925] [2023-08-26 07:58:26,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738756925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:26,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653925556] [2023-08-26 07:58:26,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:26,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:26,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:26,285 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:26,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 07:58:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:26,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-26 07:58:26,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:26,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 07:58:26,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:58:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653925556] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:26,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:58:26,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-26 07:58:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573107318] [2023-08-26 07:58:26,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:58:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:26,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:58:26,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:58:26,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-26 07:58:26,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 166 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:26,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:26,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-26 07:58:26,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:29,520 INFO L124 PetriNetUnfolderBase]: 17118/40256 cut-off events. [2023-08-26 07:58:29,520 INFO L125 PetriNetUnfolderBase]: For 198/230 co-relation queries the response was YES. [2023-08-26 07:58:29,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65128 conditions, 40256 events. 17118/40256 cut-off events. For 198/230 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 448626 event pairs, 14022 based on Foata normal form. 0/35360 useless extension candidates. Maximal degree in co-relation 65115. Up to 24720 conditions per place. [2023-08-26 07:58:29,728 INFO L140 encePairwiseOnDemand]: 641/644 looper letters, 85 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2023-08-26 07:58:29,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 186 transitions, 574 flow [2023-08-26 07:58:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:58:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:58:29,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1083 transitions. [2023-08-26 07:58:29,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5605590062111802 [2023-08-26 07:58:29,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1083 transitions. [2023-08-26 07:58:29,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1083 transitions. [2023-08-26 07:58:29,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:29,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1083 transitions. [2023-08-26 07:58:29,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 361.0) internal successors, (1083), 3 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:29,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:29,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:29,737 INFO L175 Difference]: Start difference. First operand has 167 places, 166 transitions, 360 flow. Second operand 3 states and 1083 transitions. [2023-08-26 07:58:29,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 186 transitions, 574 flow [2023-08-26 07:58:29,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 186 transitions, 570 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-26 07:58:29,740 INFO L231 Difference]: Finished difference. Result has 169 places, 167 transitions, 368 flow [2023-08-26 07:58:29,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=169, PETRI_TRANSITIONS=167} [2023-08-26 07:58:29,741 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 5 predicate places. [2023-08-26 07:58:29,741 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 167 transitions, 368 flow [2023-08-26 07:58:29,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 334.0) internal successors, (1002), 3 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:29,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:29,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:29,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:29,947 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,SelfDestructingSolverStorable14 [2023-08-26 07:58:29,948 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:58:29,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:29,948 INFO L85 PathProgramCache]: Analyzing trace with hash -853701027, now seen corresponding path program 1 times [2023-08-26 07:58:29,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:29,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448730435] [2023-08-26 07:58:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:29,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:29,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448730435] [2023-08-26 07:58:29,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448730435] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:29,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726255635] [2023-08-26 07:58:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:29,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:29,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:29,985 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:29,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 07:58:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:30,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:58:30,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:30,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:58:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:30,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726255635] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:58:30,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:58:30,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:58:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684048911] [2023-08-26 07:58:30,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:58:30,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:58:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:58:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:58:30,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-26 07:58:30,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 167 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 333.85714285714283) internal successors, (2337), 7 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:30,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:30,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-26 07:58:30,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:58:33,142 INFO L124 PetriNetUnfolderBase]: 17118/40432 cut-off events. [2023-08-26 07:58:33,143 INFO L125 PetriNetUnfolderBase]: For 956/972 co-relation queries the response was YES. [2023-08-26 07:58:33,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66089 conditions, 40432 events. 17118/40432 cut-off events. For 956/972 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 451628 event pairs, 15876 based on Foata normal form. 3/35873 useless extension candidates. Maximal degree in co-relation 66061. Up to 24740 conditions per place. [2023-08-26 07:58:33,331 INFO L140 encePairwiseOnDemand]: 641/644 looper letters, 66 selfloop transitions, 5 changer transitions 0/170 dead transitions. [2023-08-26 07:58:33,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 522 flow [2023-08-26 07:58:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:58:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:58:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2065 transitions. [2023-08-26 07:58:33,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5344202898550725 [2023-08-26 07:58:33,336 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2065 transitions. [2023-08-26 07:58:33,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2065 transitions. [2023-08-26 07:58:33,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:58:33,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2065 transitions. [2023-08-26 07:58:33,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 344.1666666666667) internal successors, (2065), 6 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:33,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:33,347 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:33,347 INFO L175 Difference]: Start difference. First operand has 169 places, 167 transitions, 368 flow. Second operand 6 states and 2065 transitions. [2023-08-26 07:58:33,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 522 flow [2023-08-26 07:58:33,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 520 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:58:33,351 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 402 flow [2023-08-26 07:58:33,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=402, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2023-08-26 07:58:33,352 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 12 predicate places. [2023-08-26 07:58:33,352 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 402 flow [2023-08-26 07:58:33,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 333.85714285714283) internal successors, (2337), 7 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:33,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:58:33,353 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:58:33,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 07:58:33,558 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,SelfDestructingSolverStorable15 [2023-08-26 07:58:33,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:58:33,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:58:33,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1193300850, now seen corresponding path program 2 times [2023-08-26 07:58:33,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:58:33,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890082655] [2023-08-26 07:58:33,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:58:33,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:58:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:58:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:58:33,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:58:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890082655] [2023-08-26 07:58:33,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890082655] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:58:33,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443892485] [2023-08-26 07:58:33,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 07:58:33,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:58:33,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:58:33,631 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:58:33,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 07:58:33,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-26 07:58:33,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 07:58:33,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-26 07:58:33,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:58:33,747 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-26 07:58:33,763 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-26 07:58:33,784 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:33,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-26 07:58:33,808 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 07:58:33,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-26 07:58:33,830 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-26 07:58:33,830 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:58:33,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443892485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:58:33,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:58:33,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2023-08-26 07:58:33,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219667730] [2023-08-26 07:58:33,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:58:33,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 07:58:33,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:58:33,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 07:58:33,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-26 07:58:33,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 644 [2023-08-26 07:58:33,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 402 flow. Second operand has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:58:33,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:58:33,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 644 [2023-08-26 07:58:33,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:59:29,890 INFO L124 PetriNetUnfolderBase]: 488261/750641 cut-off events. [2023-08-26 07:59:29,891 INFO L125 PetriNetUnfolderBase]: For 7858/7858 co-relation queries the response was YES. [2023-08-26 07:59:31,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495052 conditions, 750641 events. 488261/750641 cut-off events. For 7858/7858 co-relation queries the response was YES. Maximal size of possible extension queue 7957. Compared 6824240 event pairs, 181468 based on Foata normal form. 0/630118 useless extension candidates. Maximal degree in co-relation 1495016. Up to 321379 conditions per place. [2023-08-26 07:59:33,811 INFO L140 encePairwiseOnDemand]: 607/644 looper letters, 568 selfloop transitions, 76 changer transitions 0/657 dead transitions. [2023-08-26 07:59:33,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 657 transitions, 2732 flow [2023-08-26 07:59:33,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 07:59:33,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 07:59:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1946 transitions. [2023-08-26 07:59:33,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5036231884057971 [2023-08-26 07:59:33,819 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1946 transitions. [2023-08-26 07:59:33,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1946 transitions. [2023-08-26 07:59:33,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:59:33,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1946 transitions. [2023-08-26 07:59:33,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 324.3333333333333) internal successors, (1946), 6 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:33,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:33,829 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:33,830 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 402 flow. Second operand 6 states and 1946 transitions. [2023-08-26 07:59:33,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 657 transitions, 2732 flow [2023-08-26 07:59:33,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 657 transitions, 2718 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-26 07:59:33,839 INFO L231 Difference]: Finished difference. Result has 184 places, 247 transitions, 899 flow [2023-08-26 07:59:33,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=899, PETRI_PLACES=184, PETRI_TRANSITIONS=247} [2023-08-26 07:59:33,840 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 20 predicate places. [2023-08-26 07:59:33,840 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 247 transitions, 899 flow [2023-08-26 07:59:33,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.16666666666666) internal successors, (1321), 6 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:33,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:59:33,841 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:59:33,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 07:59:34,049 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,SelfDestructingSolverStorable16 [2023-08-26 07:59:34,049 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:59:34,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:59:34,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1193300444, now seen corresponding path program 1 times [2023-08-26 07:59:34,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:59:34,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011938726] [2023-08-26 07:59:34,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:59:34,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:59:34,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:59:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:59:34,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:59:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011938726] [2023-08-26 07:59:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011938726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:59:34,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454499555] [2023-08-26 07:59:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:59:34,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:59:34,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:59:34,115 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 07:59:34,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 07:59:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:59:34,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 07:59:34,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:59:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:59:34,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:59:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 07:59:34,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454499555] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:59:34,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:59:34,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-26 07:59:34,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129077478] [2023-08-26 07:59:34,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:59:34,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 07:59:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:59:34,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 07:59:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-26 07:59:34,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-26 07:59:34,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 247 transitions, 899 flow. Second operand has 13 states, 13 states have (on average 333.53846153846155) internal successors, (4336), 13 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:34,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:59:34,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-26 07:59:34,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:59:48,370 INFO L124 PetriNetUnfolderBase]: 63289/155268 cut-off events. [2023-08-26 07:59:48,370 INFO L125 PetriNetUnfolderBase]: For 32288/37396 co-relation queries the response was YES. [2023-08-26 07:59:49,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315332 conditions, 155268 events. 63289/155268 cut-off events. For 32288/37396 co-relation queries the response was YES. Maximal size of possible extension queue 3999. Compared 2069056 event pairs, 41685 based on Foata normal form. 2183/139642 useless extension candidates. Maximal degree in co-relation 315274. Up to 87399 conditions per place. [2023-08-26 07:59:49,742 INFO L140 encePairwiseOnDemand]: 641/644 looper letters, 98 selfloop transitions, 11 changer transitions 0/253 dead transitions. [2023-08-26 07:59:49,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 253 transitions, 1153 flow [2023-08-26 07:59:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-26 07:59:49,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-26 07:59:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4066 transitions. [2023-08-26 07:59:49,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261387163561076 [2023-08-26 07:59:49,749 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4066 transitions. [2023-08-26 07:59:49,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4066 transitions. [2023-08-26 07:59:49,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:59:49,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4066 transitions. [2023-08-26 07:59:49,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 338.8333333333333) internal successors, (4066), 12 states have internal predecessors, (4066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:49,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 644.0) internal successors, (8372), 13 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:49,767 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 644.0) internal successors, (8372), 13 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:49,767 INFO L175 Difference]: Start difference. First operand has 184 places, 247 transitions, 899 flow. Second operand 12 states and 4066 transitions. [2023-08-26 07:59:49,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 253 transitions, 1153 flow [2023-08-26 07:59:49,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 253 transitions, 1153 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:59:49,862 INFO L231 Difference]: Finished difference. Result has 201 places, 253 transitions, 983 flow [2023-08-26 07:59:49,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=983, PETRI_PLACES=201, PETRI_TRANSITIONS=253} [2023-08-26 07:59:49,863 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 37 predicate places. [2023-08-26 07:59:49,863 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 253 transitions, 983 flow [2023-08-26 07:59:49,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 333.53846153846155) internal successors, (4336), 13 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:49,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:59:49,864 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:59:49,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 07:59:50,069 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,SelfDestructingSolverStorable17 [2023-08-26 07:59:50,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 07:59:50,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:59:50,071 INFO L85 PathProgramCache]: Analyzing trace with hash -656667708, now seen corresponding path program 2 times [2023-08-26 07:59:50,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:59:50,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962325523] [2023-08-26 07:59:50,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:59:50,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:59:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:59:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 07:59:50,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:59:50,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962325523] [2023-08-26 07:59:50,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962325523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:59:50,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:59:50,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 07:59:50,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515065616] [2023-08-26 07:59:50,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:59:50,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:59:50,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:59:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:59:50,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:59:50,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 644 [2023-08-26 07:59:50,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 253 transitions, 983 flow. Second operand has 7 states, 7 states have (on average 199.85714285714286) internal successors, (1399), 7 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:59:50,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:59:50,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 644 [2023-08-26 07:59:50,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:01:14,663 INFO L124 PetriNetUnfolderBase]: 569944/875843 cut-off events. [2023-08-26 08:01:14,664 INFO L125 PetriNetUnfolderBase]: For 324619/324619 co-relation queries the response was YES. [2023-08-26 08:01:18,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149894 conditions, 875843 events. 569944/875843 cut-off events. For 324619/324619 co-relation queries the response was YES. Maximal size of possible extension queue 9719. Compared 8051573 event pairs, 200298 based on Foata normal form. 0/765235 useless extension candidates. Maximal degree in co-relation 2149811. Up to 717993 conditions per place. [2023-08-26 08:01:22,028 INFO L140 encePairwiseOnDemand]: 635/644 looper letters, 574 selfloop transitions, 21 changer transitions 3/611 dead transitions. [2023-08-26 08:01:22,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 611 transitions, 3233 flow [2023-08-26 08:01:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 08:01:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 08:01:22,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1846 transitions. [2023-08-26 08:01:22,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40949423247559896 [2023-08-26 08:01:22,032 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1846 transitions. [2023-08-26 08:01:22,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1846 transitions. [2023-08-26 08:01:22,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:01:22,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1846 transitions. [2023-08-26 08:01:22,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 263.7142857142857) internal successors, (1846), 7 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:22,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 644.0) internal successors, (5152), 8 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:22,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 644.0) internal successors, (5152), 8 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:22,058 INFO L175 Difference]: Start difference. First operand has 201 places, 253 transitions, 983 flow. Second operand 7 states and 1846 transitions. [2023-08-26 08:01:22,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 611 transitions, 3233 flow [2023-08-26 08:01:41,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 611 transitions, 3185 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-26 08:01:41,088 INFO L231 Difference]: Finished difference. Result has 206 places, 273 transitions, 1102 flow [2023-08-26 08:01:41,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1102, PETRI_PLACES=206, PETRI_TRANSITIONS=273} [2023-08-26 08:01:41,088 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 42 predicate places. [2023-08-26 08:01:41,089 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 273 transitions, 1102 flow [2023-08-26 08:01:41,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 199.85714285714286) internal successors, (1399), 7 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:41,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:01:41,089 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:01:41,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-26 08:01:41,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:01:41,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:01:41,090 INFO L85 PathProgramCache]: Analyzing trace with hash 176743370, now seen corresponding path program 1 times [2023-08-26 08:01:41,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:01:41,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707531754] [2023-08-26 08:01:41,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:01:41,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:01:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:01:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 08:01:41,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:01:41,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707531754] [2023-08-26 08:01:41,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707531754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:01:41,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361219837] [2023-08-26 08:01:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:01:41,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:01:41,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:01:41,157 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 08:01:41,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 08:01:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:01:41,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 08:01:41,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:01:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 08:01:41,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:01:41,388 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 08:01:41,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361219837] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 08:01:41,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 08:01:41,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-26 08:01:41,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919047746] [2023-08-26 08:01:41,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 08:01:41,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 08:01:41,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:01:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 08:01:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 08:01:41,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 644 [2023-08-26 08:01:41,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 273 transitions, 1102 flow. Second operand has 7 states, 7 states have (on average 334.57142857142856) internal successors, (2342), 7 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:41,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:01:41,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 644 [2023-08-26 08:01:41,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:01:43,029 INFO L124 PetriNetUnfolderBase]: 4872/12851 cut-off events. [2023-08-26 08:01:43,029 INFO L125 PetriNetUnfolderBase]: For 6242/6785 co-relation queries the response was YES. [2023-08-26 08:01:43,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28592 conditions, 12851 events. 4872/12851 cut-off events. For 6242/6785 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 125712 event pairs, 1907 based on Foata normal form. 1338/13357 useless extension candidates. Maximal degree in co-relation 28528. Up to 5458 conditions per place. [2023-08-26 08:01:43,220 INFO L140 encePairwiseOnDemand]: 641/644 looper letters, 172 selfloop transitions, 3 changer transitions 0/269 dead transitions. [2023-08-26 08:01:43,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 269 transitions, 1490 flow [2023-08-26 08:01:43,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 08:01:43,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 08:01:43,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1761 transitions. [2023-08-26 08:01:43,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5468944099378882 [2023-08-26 08:01:43,224 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1761 transitions. [2023-08-26 08:01:43,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1761 transitions. [2023-08-26 08:01:43,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:01:43,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1761 transitions. [2023-08-26 08:01:43,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 352.2) internal successors, (1761), 5 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:43,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 644.0) internal successors, (3864), 6 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:43,230 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 644.0) internal successors, (3864), 6 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:43,230 INFO L175 Difference]: Start difference. First operand has 206 places, 273 transitions, 1102 flow. Second operand 5 states and 1761 transitions. [2023-08-26 08:01:43,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 269 transitions, 1490 flow [2023-08-26 08:01:43,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 269 transitions, 1472 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 08:01:43,250 INFO L231 Difference]: Finished difference. Result has 149 places, 181 transitions, 769 flow [2023-08-26 08:01:43,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=769, PETRI_PLACES=149, PETRI_TRANSITIONS=181} [2023-08-26 08:01:43,258 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -15 predicate places. [2023-08-26 08:01:43,258 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 181 transitions, 769 flow [2023-08-26 08:01:43,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 334.57142857142856) internal successors, (2342), 7 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:43,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:01:43,268 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:01:43,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-26 08:01:43,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:01:43,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:01:43,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:01:43,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1937027259, now seen corresponding path program 1 times [2023-08-26 08:01:43,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:01:43,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406131860] [2023-08-26 08:01:43,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:01:43,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:01:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:01:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-26 08:01:43,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:01:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406131860] [2023-08-26 08:01:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406131860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:01:43,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:01:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:01:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153795339] [2023-08-26 08:01:43,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:01:43,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:01:43,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:01:43,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:01:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:01:43,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 644 [2023-08-26 08:01:43,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 181 transitions, 769 flow. Second operand has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:43,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:01:43,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 644 [2023-08-26 08:01:43,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:01:49,653 INFO L124 PetriNetUnfolderBase]: 25272/41795 cut-off events. [2023-08-26 08:01:49,653 INFO L125 PetriNetUnfolderBase]: For 30086/30086 co-relation queries the response was YES. [2023-08-26 08:01:49,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112038 conditions, 41795 events. 25272/41795 cut-off events. For 30086/30086 co-relation queries the response was YES. Maximal size of possible extension queue 924. Compared 318129 event pairs, 10349 based on Foata normal form. 0/38676 useless extension candidates. Maximal degree in co-relation 111976. Up to 22949 conditions per place. [2023-08-26 08:01:50,150 INFO L140 encePairwiseOnDemand]: 615/644 looper letters, 499 selfloop transitions, 120 changer transitions 0/628 dead transitions. [2023-08-26 08:01:50,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 628 transitions, 3969 flow [2023-08-26 08:01:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:01:50,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:01:50,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1658 transitions. [2023-08-26 08:01:50,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42908902691511386 [2023-08-26 08:01:50,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1658 transitions. [2023-08-26 08:01:50,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1658 transitions. [2023-08-26 08:01:50,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:01:50,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1658 transitions. [2023-08-26 08:01:50,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:50,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:50,160 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:50,160 INFO L175 Difference]: Start difference. First operand has 149 places, 181 transitions, 769 flow. Second operand 6 states and 1658 transitions. [2023-08-26 08:01:50,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 628 transitions, 3969 flow [2023-08-26 08:01:50,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 628 transitions, 3954 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-26 08:01:50,216 INFO L231 Difference]: Finished difference. Result has 155 places, 300 transitions, 1709 flow [2023-08-26 08:01:50,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1709, PETRI_PLACES=155, PETRI_TRANSITIONS=300} [2023-08-26 08:01:50,217 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -9 predicate places. [2023-08-26 08:01:50,218 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 300 transitions, 1709 flow [2023-08-26 08:01:50,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:01:50,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:01:50,219 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:01:50,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-26 08:01:50,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:01:50,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:01:50,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1937027552, now seen corresponding path program 1 times [2023-08-26 08:01:50,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:01:50,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714337759] [2023-08-26 08:01:50,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:01:50,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:01:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:01:50,506 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:01:50,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:01:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714337759] [2023-08-26 08:01:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714337759] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:01:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157926175] [2023-08-26 08:01:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:01:50,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:01:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:01:50,508 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 08:01:50,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 08:01:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:01:50,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-26 08:01:50,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:01:50,662 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 08:01:50,721 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 08:01:50,722 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 08:01:50,739 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:01:50,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:01:50,825 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2023-08-26 08:01:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:01:50,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:02:14,980 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_t_funThread2of2ForFork0_~i~0#1_145| Int) (v_ArrVal_926 (Array Int Int)) (|~#a~0.offset| Int)) (or (< |v_t_funThread2of2ForFork0_~i~0#1_145| 1) (<= 10 |v_t_funThread2of2ForFork0_~i~0#1_145|) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_926) |c_~#a~0.base|) (+ (* |v_t_funThread2of2ForFork0_~i~0#1_145| 28) |~#a~0.offset|)) 0))) is different from false [2023-08-26 08:02:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 08:02:15,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157926175] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 08:02:15,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 08:02:15,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-26 08:02:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273246371] [2023-08-26 08:02:15,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 08:02:15,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 08:02:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:02:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 08:02:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=98, Unknown=8, NotChecked=22, Total=182 [2023-08-26 08:02:15,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 644 [2023-08-26 08:02:15,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 300 transitions, 1709 flow. Second operand has 14 states, 14 states have (on average 200.78571428571428) internal successors, (2811), 14 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:15,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:02:15,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 644 [2023-08-26 08:02:15,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:02:20,604 INFO L124 PetriNetUnfolderBase]: 27193/45057 cut-off events. [2023-08-26 08:02:20,604 INFO L125 PetriNetUnfolderBase]: For 30702/30702 co-relation queries the response was YES. [2023-08-26 08:02:20,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130516 conditions, 45057 events. 27193/45057 cut-off events. For 30702/30702 co-relation queries the response was YES. Maximal size of possible extension queue 988. Compared 349797 event pairs, 6826 based on Foata normal form. 0/42613 useless extension candidates. Maximal degree in co-relation 130451. Up to 38480 conditions per place. [2023-08-26 08:02:21,022 INFO L140 encePairwiseOnDemand]: 636/644 looper letters, 404 selfloop transitions, 15 changer transitions 9/437 dead transitions. [2023-08-26 08:02:21,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 437 transitions, 3187 flow [2023-08-26 08:02:21,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 08:02:21,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 08:02:21,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1595 transitions. [2023-08-26 08:02:21,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3538154392191659 [2023-08-26 08:02:21,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1595 transitions. [2023-08-26 08:02:21,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1595 transitions. [2023-08-26 08:02:21,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:02:21,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1595 transitions. [2023-08-26 08:02:21,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 227.85714285714286) internal successors, (1595), 7 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:21,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 644.0) internal successors, (5152), 8 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:21,030 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 644.0) internal successors, (5152), 8 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:21,030 INFO L175 Difference]: Start difference. First operand has 155 places, 300 transitions, 1709 flow. Second operand 7 states and 1595 transitions. [2023-08-26 08:02:21,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 437 transitions, 3187 flow [2023-08-26 08:02:21,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 437 transitions, 3187 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 08:02:21,117 INFO L231 Difference]: Finished difference. Result has 165 places, 310 transitions, 1826 flow [2023-08-26 08:02:21,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1826, PETRI_PLACES=165, PETRI_TRANSITIONS=310} [2023-08-26 08:02:21,117 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 1 predicate places. [2023-08-26 08:02:21,117 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 310 transitions, 1826 flow [2023-08-26 08:02:21,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 200.78571428571428) internal successors, (2811), 14 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:21,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:02:21,118 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:02:21,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-26 08:02:21,319 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,SelfDestructingSolverStorable21 [2023-08-26 08:02:21,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:02:21,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:02:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 745220502, now seen corresponding path program 1 times [2023-08-26 08:02:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:02:21,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657187010] [2023-08-26 08:02:21,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:02:21,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:02:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:02:21,586 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-26 08:02:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:02:21,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657187010] [2023-08-26 08:02:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657187010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:02:21,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:02:21,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:02:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085591963] [2023-08-26 08:02:21,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:02:21,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:02:21,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:02:21,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:02:21,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:02:21,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 644 [2023-08-26 08:02:21,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 310 transitions, 1826 flow. Second operand has 6 states, 6 states have (on average 219.16666666666666) internal successors, (1315), 6 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:21,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:02:21,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 644 [2023-08-26 08:02:21,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:02:27,611 INFO L124 PetriNetUnfolderBase]: 30363/50222 cut-off events. [2023-08-26 08:02:27,612 INFO L125 PetriNetUnfolderBase]: For 35847/35847 co-relation queries the response was YES. [2023-08-26 08:02:27,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146415 conditions, 50222 events. 30363/50222 cut-off events. For 35847/35847 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 395701 event pairs, 18855 based on Foata normal form. 0/47436 useless extension candidates. Maximal degree in co-relation 146344. Up to 42459 conditions per place. [2023-08-26 08:02:28,149 INFO L140 encePairwiseOnDemand]: 617/644 looper letters, 494 selfloop transitions, 124 changer transitions 0/627 dead transitions. [2023-08-26 08:02:28,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 627 transitions, 4552 flow [2023-08-26 08:02:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:02:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:02:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1602 transitions. [2023-08-26 08:02:28,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41459627329192544 [2023-08-26 08:02:28,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1602 transitions. [2023-08-26 08:02:28,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1602 transitions. [2023-08-26 08:02:28,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:02:28,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1602 transitions. [2023-08-26 08:02:28,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.0) internal successors, (1602), 6 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:28,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:28,155 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:28,155 INFO L175 Difference]: Start difference. First operand has 165 places, 310 transitions, 1826 flow. Second operand 6 states and 1602 transitions. [2023-08-26 08:02:28,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 627 transitions, 4552 flow [2023-08-26 08:02:28,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 627 transitions, 4550 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:02:28,279 INFO L231 Difference]: Finished difference. Result has 173 places, 414 transitions, 2896 flow [2023-08-26 08:02:28,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=1824, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2896, PETRI_PLACES=173, PETRI_TRANSITIONS=414} [2023-08-26 08:02:28,280 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 9 predicate places. [2023-08-26 08:02:28,280 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 414 transitions, 2896 flow [2023-08-26 08:02:28,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.16666666666666) internal successors, (1315), 6 states have internal predecessors, (1315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:28,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:02:28,280 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:02:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-26 08:02:28,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:02:28,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:02:28,281 INFO L85 PathProgramCache]: Analyzing trace with hash 593158766, now seen corresponding path program 1 times [2023-08-26 08:02:28,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:02:28,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008767125] [2023-08-26 08:02:28,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:02:28,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:02:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:02:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-26 08:02:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:02:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008767125] [2023-08-26 08:02:28,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008767125] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:02:28,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:02:28,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 08:02:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156343619] [2023-08-26 08:02:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:02:28,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 08:02:28,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:02:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 08:02:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-26 08:02:28,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 644 [2023-08-26 08:02:28,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 414 transitions, 2896 flow. Second operand has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:28,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:02:28,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 644 [2023-08-26 08:02:28,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:02:36,121 INFO L124 PetriNetUnfolderBase]: 33536/55459 cut-off events. [2023-08-26 08:02:36,121 INFO L125 PetriNetUnfolderBase]: For 59138/59138 co-relation queries the response was YES. [2023-08-26 08:02:36,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176409 conditions, 55459 events. 33536/55459 cut-off events. For 59138/59138 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 444756 event pairs, 20144 based on Foata normal form. 0/52997 useless extension candidates. Maximal degree in co-relation 176334. Up to 47309 conditions per place. [2023-08-26 08:02:37,026 INFO L140 encePairwiseOnDemand]: 617/644 looper letters, 598 selfloop transitions, 147 changer transitions 0/754 dead transitions. [2023-08-26 08:02:37,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 754 transitions, 6156 flow [2023-08-26 08:02:37,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 08:02:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 08:02:37,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1594 transitions. [2023-08-26 08:02:37,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41252587991718426 [2023-08-26 08:02:37,028 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1594 transitions. [2023-08-26 08:02:37,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1594 transitions. [2023-08-26 08:02:37,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:02:37,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1594 transitions. [2023-08-26 08:02:37,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.6666666666667) internal successors, (1594), 6 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,032 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 644.0) internal successors, (4508), 7 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,032 INFO L175 Difference]: Start difference. First operand has 173 places, 414 transitions, 2896 flow. Second operand 6 states and 1594 transitions. [2023-08-26 08:02:37,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 754 transitions, 6156 flow [2023-08-26 08:02:37,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 754 transitions, 6034 flow, removed 61 selfloop flow, removed 0 redundant places. [2023-08-26 08:02:37,241 INFO L231 Difference]: Finished difference. Result has 182 places, 524 transitions, 4066 flow [2023-08-26 08:02:37,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4066, PETRI_PLACES=182, PETRI_TRANSITIONS=524} [2023-08-26 08:02:37,242 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 18 predicate places. [2023-08-26 08:02:37,242 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 524 transitions, 4066 flow [2023-08-26 08:02:37,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:02:37,243 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:02:37,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-26 08:02:37,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:02:37,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:02:37,243 INFO L85 PathProgramCache]: Analyzing trace with hash 840225593, now seen corresponding path program 1 times [2023-08-26 08:02:37,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:02:37,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191452959] [2023-08-26 08:02:37,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:02:37,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:02:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:02:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-08-26 08:02:37,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:02:37,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191452959] [2023-08-26 08:02:37,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191452959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 08:02:37,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 08:02:37,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 08:02:37,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835859486] [2023-08-26 08:02:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 08:02:37,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 08:02:37,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:02:37,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 08:02:37,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 08:02:37,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 644 [2023-08-26 08:02:37,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 524 transitions, 4066 flow. Second operand has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:02:37,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 644 [2023-08-26 08:02:37,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:02:37,947 INFO L124 PetriNetUnfolderBase]: 1282/3711 cut-off events. [2023-08-26 08:02:37,947 INFO L125 PetriNetUnfolderBase]: For 3197/3197 co-relation queries the response was YES. [2023-08-26 08:02:37,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11096 conditions, 3711 events. 1282/3711 cut-off events. For 3197/3197 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 27661 event pairs, 431 based on Foata normal form. 213/3797 useless extension candidates. Maximal degree in co-relation 11016. Up to 1351 conditions per place. [2023-08-26 08:02:37,973 INFO L140 encePairwiseOnDemand]: 630/644 looper letters, 83 selfloop transitions, 14 changer transitions 11/164 dead transitions. [2023-08-26 08:02:37,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 164 transitions, 1089 flow [2023-08-26 08:02:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 08:02:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 08:02:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1015 transitions. [2023-08-26 08:02:37,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253623188405797 [2023-08-26 08:02:37,975 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1015 transitions. [2023-08-26 08:02:37,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1015 transitions. [2023-08-26 08:02:37,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:02:37,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1015 transitions. [2023-08-26 08:02:37,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.3333333333333) internal successors, (1015), 3 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 644.0) internal successors, (2576), 4 states have internal predecessors, (2576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,977 INFO L175 Difference]: Start difference. First operand has 182 places, 524 transitions, 4066 flow. Second operand 3 states and 1015 transitions. [2023-08-26 08:02:37,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 164 transitions, 1089 flow [2023-08-26 08:02:37,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 164 transitions, 763 flow, removed 88 selfloop flow, removed 34 redundant places. [2023-08-26 08:02:37,998 INFO L231 Difference]: Finished difference. Result has 141 places, 124 transitions, 459 flow [2023-08-26 08:02:37,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=459, PETRI_PLACES=141, PETRI_TRANSITIONS=124} [2023-08-26 08:02:37,998 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, -23 predicate places. [2023-08-26 08:02:37,998 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 124 transitions, 459 flow [2023-08-26 08:02:37,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.0) internal successors, (945), 3 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:37,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:02:37,999 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:02:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-26 08:02:37,999 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:02:37,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:02:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash 628440415, now seen corresponding path program 1 times [2023-08-26 08:02:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:02:37,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403689188] [2023-08-26 08:02:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:02:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:02:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:02:38,566 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:02:38,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:02:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403689188] [2023-08-26 08:02:38,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403689188] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:02:38,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287560738] [2023-08-26 08:02:38,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:02:38,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:02:38,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:02:38,568 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 08:02:38,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 08:02:38,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:02:38,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-26 08:02:38,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:02:38,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 08:02:38,936 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 08:02:38,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 08:02:38,960 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:02:38,987 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:02:39,013 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 08:02:39,063 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 08:02:39,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 08:02:39,170 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 08:02:39,289 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 08:02:39,325 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:02:39,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:02:39,471 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2023-08-26 08:02:39,478 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 8 [2023-08-26 08:02:39,530 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1204 (Array Int Int))) (= ((as const (Array Int Int)) 0) (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1204) |c_~#a~0.base|))) is different from false [2023-08-26 08:02:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 08:02:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287560738] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 08:02:39,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 08:02:39,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2023-08-26 08:02:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573606884] [2023-08-26 08:02:39,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 08:02:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 08:02:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:02:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 08:02:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=267, Unknown=1, NotChecked=34, Total=380 [2023-08-26 08:02:39,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 644 [2023-08-26 08:02:39,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 124 transitions, 459 flow. Second operand has 20 states, 20 states have (on average 172.95) internal successors, (3459), 20 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:39,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:02:39,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 644 [2023-08-26 08:02:39,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:02:42,055 INFO L124 PetriNetUnfolderBase]: 4523/8652 cut-off events. [2023-08-26 08:02:42,055 INFO L125 PetriNetUnfolderBase]: For 3379/3391 co-relation queries the response was YES. [2023-08-26 08:02:42,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22544 conditions, 8652 events. 4523/8652 cut-off events. For 3379/3391 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 59955 event pairs, 629 based on Foata normal form. 16/8143 useless extension candidates. Maximal degree in co-relation 22482. Up to 4097 conditions per place. [2023-08-26 08:02:42,122 INFO L140 encePairwiseOnDemand]: 627/644 looper letters, 315 selfloop transitions, 39 changer transitions 48/408 dead transitions. [2023-08-26 08:02:42,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 408 transitions, 2205 flow [2023-08-26 08:02:42,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 08:02:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 08:02:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3921 transitions. [2023-08-26 08:02:42,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2899290150842946 [2023-08-26 08:02:42,126 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3921 transitions. [2023-08-26 08:02:42,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3921 transitions. [2023-08-26 08:02:42,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:02:42,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3921 transitions. [2023-08-26 08:02:42,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 186.71428571428572) internal successors, (3921), 21 states have internal predecessors, (3921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:42,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 644.0) internal successors, (14168), 22 states have internal predecessors, (14168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:42,143 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 644.0) internal successors, (14168), 22 states have internal predecessors, (14168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:42,143 INFO L175 Difference]: Start difference. First operand has 141 places, 124 transitions, 459 flow. Second operand 21 states and 3921 transitions. [2023-08-26 08:02:42,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 408 transitions, 2205 flow [2023-08-26 08:02:42,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 408 transitions, 2142 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 08:02:42,158 INFO L231 Difference]: Finished difference. Result has 173 places, 156 transitions, 764 flow [2023-08-26 08:02:42,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=764, PETRI_PLACES=173, PETRI_TRANSITIONS=156} [2023-08-26 08:02:42,159 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 9 predicate places. [2023-08-26 08:02:42,159 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 156 transitions, 764 flow [2023-08-26 08:02:42,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 172.95) internal successors, (3459), 20 states have internal predecessors, (3459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:42,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:02:42,159 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:02:42,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 08:02:42,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:02:42,360 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:02:42,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:02:42,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1748652521, now seen corresponding path program 2 times [2023-08-26 08:02:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:02:42,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664800466] [2023-08-26 08:02:42,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:02:42,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:02:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:02:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:02:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:02:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664800466] [2023-08-26 08:02:42,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664800466] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:02:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490047355] [2023-08-26 08:02:42,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 08:02:42,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:02:42,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:02:42,857 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 08:02:42,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 08:02:43,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 08:02:43,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 08:02:43,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 08:02:43,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:02:43,198 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 08:02:43,284 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 08:02:43,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 08:02:43,304 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:02:43,338 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:02:43,369 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 08:02:43,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 08:02:43,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 08:02:43,533 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 08:02:43,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 08:02:43,567 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 08:02:43,693 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 08:02:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:02:43,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:02:43,928 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 08:02:43,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 59 [2023-08-26 08:02:43,937 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 08:02:43,937 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 75 [2023-08-26 08:02:43,942 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 47 [2023-08-26 08:02:43,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 40 [2023-08-26 08:02:56,033 WARN L839 $PredicateComparison]: unable to prove that (and (not (= |c_~#a~0.base| |c_~#__global_lock~0.base|)) (forall ((v_ArrVal_1337 (Array Int Int)) (|v_t_funThread1of2ForFork0_~i~0#1_149| Int) (|~#a~0.offset| Int)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_1337) |c_~#a~0.base|) (+ (* |v_t_funThread1of2ForFork0_~i~0#1_149| 28) |~#a~0.offset|)) 0))) is different from false [2023-08-26 08:02:58,387 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 1 not checked. [2023-08-26 08:02:58,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490047355] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 08:02:58,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 08:02:58,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-26 08:02:58,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671334701] [2023-08-26 08:02:58,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 08:02:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-26 08:02:58,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 08:02:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-26 08:02:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=4, NotChecked=38, Total=462 [2023-08-26 08:02:58,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 644 [2023-08-26 08:02:58,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 156 transitions, 764 flow. Second operand has 22 states, 22 states have (on average 174.5909090909091) internal successors, (3841), 22 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:02:58,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 08:02:58,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 644 [2023-08-26 08:02:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 08:03:01,233 INFO L124 PetriNetUnfolderBase]: 5333/10409 cut-off events. [2023-08-26 08:03:01,233 INFO L125 PetriNetUnfolderBase]: For 27221/27239 co-relation queries the response was YES. [2023-08-26 08:03:01,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35199 conditions, 10409 events. 5333/10409 cut-off events. For 27221/27239 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 76955 event pairs, 577 based on Foata normal form. 19/9795 useless extension candidates. Maximal degree in co-relation 35123. Up to 4323 conditions per place. [2023-08-26 08:03:01,351 INFO L140 encePairwiseOnDemand]: 626/644 looper letters, 405 selfloop transitions, 83 changer transitions 39/533 dead transitions. [2023-08-26 08:03:01,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 533 transitions, 3330 flow [2023-08-26 08:03:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-26 08:03:01,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-26 08:03:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4228 transitions. [2023-08-26 08:03:01,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2984189723320158 [2023-08-26 08:03:01,358 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4228 transitions. [2023-08-26 08:03:01,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4228 transitions. [2023-08-26 08:03:01,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 08:03:01,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4228 transitions. [2023-08-26 08:03:01,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 192.1818181818182) internal successors, (4228), 22 states have internal predecessors, (4228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:03:01,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 644.0) internal successors, (14812), 23 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:03:01,375 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 644.0) internal successors, (14812), 23 states have internal predecessors, (14812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:03:01,375 INFO L175 Difference]: Start difference. First operand has 173 places, 156 transitions, 764 flow. Second operand 22 states and 4228 transitions. [2023-08-26 08:03:01,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 533 transitions, 3330 flow [2023-08-26 08:03:01,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 533 transitions, 3249 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-08-26 08:03:01,443 INFO L231 Difference]: Finished difference. Result has 199 places, 224 transitions, 1524 flow [2023-08-26 08:03:01,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=644, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1524, PETRI_PLACES=199, PETRI_TRANSITIONS=224} [2023-08-26 08:03:01,444 INFO L281 CegarLoopForPetriNet]: 164 programPoint places, 35 predicate places. [2023-08-26 08:03:01,444 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 224 transitions, 1524 flow [2023-08-26 08:03:01,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 174.5909090909091) internal successors, (3841), 22 states have internal predecessors, (3841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 08:03:01,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 08:03:01,445 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 08:03:01,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 08:03:01,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-26 08:03:01,652 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr5ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONASSERT, t_funErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2023-08-26 08:03:01,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 08:03:01,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1660322434, now seen corresponding path program 1 times [2023-08-26 08:03:01,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 08:03:01,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998878196] [2023-08-26 08:03:01,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:03:01,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 08:03:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:03:02,263 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:03:02,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 08:03:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998878196] [2023-08-26 08:03:02,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998878196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 08:03:02,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861171400] [2023-08-26 08:03:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 08:03:02,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 08:03:02,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 08:03:02,269 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 08:03:02,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 08:03:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 08:03:02,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-26 08:03:02,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 08:03:02,460 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-08-26 08:03:02,556 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 08:03:02,557 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-26 08:03:02,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:03:02,614 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2023-08-26 08:03:02,641 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-08-26 08:03:02,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-26 08:03:02,688 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-08-26 08:03:02,767 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-26 08:03:02,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 11 [2023-08-26 08:03:02,806 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-08-26 08:03:02,916 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2023-08-26 08:03:02,947 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-08-26 08:03:02,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 08:03:03,137 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1476 Int) (v_ArrVal_1474 (Array Int Int)) (|v_t_funThread2of2ForFork0_~i~0#1_151| Int)) (let ((.cse0 (* |v_t_funThread2of2ForFork0_~i~0#1_151| 28))) (or (not (= (select (select (store |c_#pthreadsMutex| |c_~#__global_lock~0.base| v_ArrVal_1474) |c_~#a~0.base|) (+ .cse0 |c_~#a~0.offset| (- 24))) 0)) (<= 10 |v_t_funThread2of2ForFork0_~i~0#1_151|) (= (select (store (select |c_#memory_int| |c_~#a~0.base|) (+ (* |c_t_funThread1of2ForFork0_~i~0#1| 28) |c_~#a~0.offset|) v_ArrVal_1476) (+ .cse0 |c_~#a~0.offset|)) 0) (< |v_t_funThread2of2ForFork0_~i~0#1_151| 1)))) is different from false [2023-08-26 08:03:03,172 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 08:03:03,173 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-08-26 08:03:03,182 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-26 08:03:03,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2023-08-26 08:03:03,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18