/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 INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:02:17,817 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:02:17,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 21:02:17,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:02:17,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:02:17,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:02:17,917 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:02:17,917 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:02:17,917 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:02:17,920 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:02:17,920 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:02:17,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:02:17,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:02:17,922 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:02:17,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:02:17,922 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:02:17,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:02:17,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:02:17,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:02:17,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:02:17,923 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:02:17,923 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:02:17,924 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:02:17,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:02:17,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:02:17,924 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:02:17,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:02:17,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:02:17,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:02:17,925 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:02:17,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:02:17,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:02:17,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:02:17,926 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:02:17,926 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:02:17,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:02:18,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:02:18,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:02:18,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:02:18,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:02:18,187 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:02:18,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-08-25 21:02:19,149 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:02:19,371 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:02:19,372 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-08-25 21:02:19,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2fcf4398/c53ccb39abd94541abded98903a0a796/FLAG8948da0b7 [2023-08-25 21:02:19,388 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2fcf4398/c53ccb39abd94541abded98903a0a796 [2023-08-25 21:02:19,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:02:19,394 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:02:19,396 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:02:19,397 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:02:19,399 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:02:19,400 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,401 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5b34de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19, skipping insertion in model container [2023-08-25 21:02:19,401 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,418 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:02:19,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:02:19,557 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:02:19,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:02:19,591 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:02:19,591 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 21:02:19,595 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:02:19,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19 WrapperNode [2023-08-25 21:02:19,596 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:02:19,597 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:02:19,597 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:02:19,597 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:02:19,602 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,614 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,636 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-25 21:02:19,636 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:02:19,637 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:02:19,637 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:02:19,637 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:02:19,643 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,663 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,665 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,667 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,668 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:02:19,669 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:02:19,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:02:19,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:02:19,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (1/1) ... [2023-08-25 21:02:19,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:02:19,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:19,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 21:02:19,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 21:02:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:02:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:02:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:02:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:02:19,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:02:19,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:02:19,727 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:02:19,784 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:02:19,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:02:19,933 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:02:20,001 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:02:20,002 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 21:02:20,003 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:02:20 BoogieIcfgContainer [2023-08-25 21:02:20,003 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:02:20,005 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:02:20,005 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:02:20,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:02:20,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:02:19" (1/3) ... [2023-08-25 21:02:20,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b95a2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:02:20, skipping insertion in model container [2023-08-25 21:02:20,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:02:19" (2/3) ... [2023-08-25 21:02:20,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b95a2d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:02:20, skipping insertion in model container [2023-08-25 21:02:20,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:02:20" (3/3) ... [2023-08-25 21:02:20,012 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2023-08-25 21:02:20,023 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:02:20,023 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-25 21:02:20,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:02:20,073 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:02:20,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 112 transitions, 240 flow [2023-08-25 21:02:20,156 INFO L124 PetriNetUnfolderBase]: 6/110 cut-off events. [2023-08-25 21:02:20,156 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:02:20,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 110 events. 6/110 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 93 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 21:02:20,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 112 transitions, 240 flow [2023-08-25 21:02:20,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 101 transitions, 214 flow [2023-08-25 21:02:20,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:02:20,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 101 transitions, 214 flow [2023-08-25 21:02:20,178 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 101 transitions, 214 flow [2023-08-25 21:02:20,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 101 transitions, 214 flow [2023-08-25 21:02:20,215 INFO L124 PetriNetUnfolderBase]: 6/101 cut-off events. [2023-08-25 21:02:20,215 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:02:20,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 6/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-08-25 21:02:20,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 1364 [2023-08-25 21:02:22,229 INFO L134 LiptonReduction]: Checked pairs total: 3792 [2023-08-25 21:02:22,233 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-25 21:02:22,245 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:02:22,249 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;@3749484d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:02:22,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-25 21:02:22,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:02:22,250 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:02:22,250 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:02:22,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:22,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:02:22,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:22,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:22,254 INFO L85 PathProgramCache]: Analyzing trace with hash 470, now seen corresponding path program 1 times [2023-08-25 21:02:22,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:22,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878205667] [2023-08-25 21:02:22,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:22,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:22,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:22,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878205667] [2023-08-25 21:02:22,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878205667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:02:22,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:02:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:02:22,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152162817] [2023-08-25 21:02:22,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:02:22,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:02:22,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:22,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:02:22,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:02:22,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 211 [2023-08-25 21:02:22,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 78 flow. Second operand has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:22,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 211 [2023-08-25 21:02:22,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:22,393 INFO L124 PetriNetUnfolderBase]: 57/116 cut-off events. [2023-08-25 21:02:22,393 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 21:02:22,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 116 events. 57/116 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 407 event pairs, 27 based on Foata normal form. 29/119 useless extension candidates. Maximal degree in co-relation 172. Up to 95 conditions per place. [2023-08-25 21:02:22,395 INFO L140 encePairwiseOnDemand]: 199/211 looper letters, 14 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-25 21:02:22,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 82 flow [2023-08-25 21:02:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:02:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:02:22,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 218 transitions. [2023-08-25 21:02:22,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5165876777251185 [2023-08-25 21:02:22,404 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 218 transitions. [2023-08-25 21:02:22,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 218 transitions. [2023-08-25 21:02:22,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:22,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 218 transitions. [2023-08-25 21:02:22,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 109.0) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,411 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 211.0) internal successors, (633), 3 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,412 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 78 flow. Second operand 2 states and 218 transitions. [2023-08-25 21:02:22,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 82 flow [2023-08-25 21:02:22,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:02:22,414 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-25 21:02:22,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-25 21:02:22,417 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2023-08-25 21:02:22,418 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-25 21:02:22,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.5) internal successors, (193), 2 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:22,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 21:02:22,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:02:22,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:22,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:22,419 INFO L85 PathProgramCache]: Analyzing trace with hash 447231485, now seen corresponding path program 1 times [2023-08-25 21:02:22,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:22,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140271042] [2023-08-25 21:02:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:22,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:22,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140271042] [2023-08-25 21:02:22,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140271042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:02:22,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:02:22,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:02:22,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484872156] [2023-08-25 21:02:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:02:22,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:02:22,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:02:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:02:22,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 211 [2023-08-25 21:02:22,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:22,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 211 [2023-08-25 21:02:22,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:22,537 INFO L124 PetriNetUnfolderBase]: 90/163 cut-off events. [2023-08-25 21:02:22,537 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 21:02:22,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 163 events. 90/163 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 498 event pairs, 66 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 329. Up to 160 conditions per place. [2023-08-25 21:02:22,539 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-25 21:02:22,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-08-25 21:02:22,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:02:22,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:02:22,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-08-25 21:02:22,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42812006319115326 [2023-08-25 21:02:22,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-08-25 21:02:22,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-08-25 21:02:22,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:22,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-08-25 21:02:22,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,549 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 271 transitions. [2023-08-25 21:02:22,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-08-25 21:02:22,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:02:22,549 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-25 21:02:22,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-25 21:02:22,550 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -13 predicate places. [2023-08-25 21:02:22,550 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-25 21:02:22,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:22,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:22,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:02:22,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:22,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1606535601, now seen corresponding path program 1 times [2023-08-25 21:02:22,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:22,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505945954] [2023-08-25 21:02:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:22,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:22,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:22,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:22,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505945954] [2023-08-25 21:02:22,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505945954] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:02:22,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:02:22,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-25 21:02:22,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847252520] [2023-08-25 21:02:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:02:22,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:02:22,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:22,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:02:22,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:02:22,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-25 21:02:22,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:22,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-25 21:02:22,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:22,817 INFO L124 PetriNetUnfolderBase]: 79/166 cut-off events. [2023-08-25 21:02:22,817 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 21:02:22,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 166 events. 79/166 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 655 event pairs, 19 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 309. Up to 82 conditions per place. [2023-08-25 21:02:22,818 INFO L140 encePairwiseOnDemand]: 208/211 looper letters, 19 selfloop transitions, 2 changer transitions 4/30 dead transitions. [2023-08-25 21:02:22,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 30 transitions, 119 flow [2023-08-25 21:02:22,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:02:22,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:02:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-25 21:02:22,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48657187993680884 [2023-08-25 21:02:22,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-25 21:02:22,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-25 21:02:22,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:22,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-25 21:02:22,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,821 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 211.0) internal successors, (844), 4 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,821 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 308 transitions. [2023-08-25 21:02:22,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 30 transitions, 119 flow [2023-08-25 21:02:22,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:02:22,822 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 55 flow [2023-08-25 21:02:22,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=55, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2023-08-25 21:02:22,823 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -11 predicate places. [2023-08-25 21:02:22,823 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 55 flow [2023-08-25 21:02:22,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:22,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:02:22,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:22,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1641837371, now seen corresponding path program 1 times [2023-08-25 21:02:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211557976] [2023-08-25 21:02:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:22,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:22,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:22,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211557976] [2023-08-25 21:02:22,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211557976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:02:22,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:02:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 21:02:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140755406] [2023-08-25 21:02:22,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:02:22,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:02:22,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:22,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:02:22,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:02:22,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 211 [2023-08-25 21:02:22,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 55 flow. Second operand has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:22,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 211 [2023-08-25 21:02:22,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:22,971 INFO L124 PetriNetUnfolderBase]: 145/293 cut-off events. [2023-08-25 21:02:22,971 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-08-25 21:02:22,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 293 events. 145/293 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1316 event pairs, 63 based on Foata normal form. 2/256 useless extension candidates. Maximal degree in co-relation 613. Up to 158 conditions per place. [2023-08-25 21:02:22,972 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 32 selfloop transitions, 3 changer transitions 3/41 dead transitions. [2023-08-25 21:02:22,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 188 flow [2023-08-25 21:02:22,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:02:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:02:22,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 456 transitions. [2023-08-25 21:02:22,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322274881516588 [2023-08-25 21:02:22,975 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 456 transitions. [2023-08-25 21:02:22,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 456 transitions. [2023-08-25 21:02:22,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:22,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 456 transitions. [2023-08-25 21:02:22,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.2) internal successors, (456), 5 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,978 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 55 flow. Second operand 5 states and 456 transitions. [2023-08-25 21:02:22,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 188 flow [2023-08-25 21:02:22,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 41 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 21:02:22,979 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 77 flow [2023-08-25 21:02:22,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-25 21:02:22,980 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-25 21:02:22,980 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 77 flow [2023-08-25 21:02:22,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:22,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:22,980 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:22,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:02:22,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:22,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:22,981 INFO L85 PathProgramCache]: Analyzing trace with hash -69309341, now seen corresponding path program 2 times [2023-08-25 21:02:22,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:22,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303147726] [2023-08-25 21:02:22,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:22,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:23,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:23,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303147726] [2023-08-25 21:02:23,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303147726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:23,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240432884] [2023-08-25 21:02:23,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:23,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:23,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:23,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:23,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 21:02:23,150 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-25 21:02:23,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:23,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 21:02:23,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:23,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:02:23,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-25 21:02:23,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240432884] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:02:23,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-25 21:02:23,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-08-25 21:02:23,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34560516] [2023-08-25 21:02:23,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:02:23,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 21:02:23,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:23,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 21:02:23,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:02:23,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 211 [2023-08-25 21:02:23,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:23,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 211 [2023-08-25 21:02:23,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:23,281 INFO L124 PetriNetUnfolderBase]: 105/210 cut-off events. [2023-08-25 21:02:23,281 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2023-08-25 21:02:23,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 210 events. 105/210 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 938 event pairs, 51 based on Foata normal form. 12/208 useless extension candidates. Maximal degree in co-relation 538. Up to 133 conditions per place. [2023-08-25 21:02:23,283 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 21 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-08-25 21:02:23,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 28 transitions, 142 flow [2023-08-25 21:02:23,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:02:23,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:02:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2023-08-25 21:02:23,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443127962085308 [2023-08-25 21:02:23,284 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2023-08-25 21:02:23,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2023-08-25 21:02:23,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:23,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2023-08-25 21:02:23,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,287 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,287 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 77 flow. Second operand 4 states and 375 transitions. [2023-08-25 21:02:23,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 28 transitions, 142 flow [2023-08-25 21:02:23,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 130 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-25 21:02:23,289 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 69 flow [2023-08-25 21:02:23,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=69, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-08-25 21:02:23,292 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -7 predicate places. [2023-08-25 21:02:23,292 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 69 flow [2023-08-25 21:02:23,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:23,293 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:23,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:23,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:23,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:23,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -458399734, now seen corresponding path program 1 times [2023-08-25 21:02:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865551354] [2023-08-25 21:02:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:23,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:23,595 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:23,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:23,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865551354] [2023-08-25 21:02:23,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865551354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:23,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108671607] [2023-08-25 21:02:23,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:23,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:23,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:23,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:23,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 21:02:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:23,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 21:02:23,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:23,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:23,712 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:23,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:23,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108671607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:23,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:23,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 3] total 4 [2023-08-25 21:02:23,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55805360] [2023-08-25 21:02:23,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:23,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:02:23,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:23,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:02:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:02:23,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-25 21:02:23,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 69 flow. Second operand has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:23,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-25 21:02:23,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:23,943 INFO L124 PetriNetUnfolderBase]: 157/345 cut-off events. [2023-08-25 21:02:23,943 INFO L125 PetriNetUnfolderBase]: For 139/152 co-relation queries the response was YES. [2023-08-25 21:02:23,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 345 events. 157/345 cut-off events. For 139/152 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1676 event pairs, 41 based on Foata normal form. 14/351 useless extension candidates. Maximal degree in co-relation 771. Up to 118 conditions per place. [2023-08-25 21:02:23,944 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 31 selfloop transitions, 6 changer transitions 4/46 dead transitions. [2023-08-25 21:02:23,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 229 flow [2023-08-25 21:02:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:02:23,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:02:23,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2023-08-25 21:02:23,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.490521327014218 [2023-08-25 21:02:23,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2023-08-25 21:02:23,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2023-08-25 21:02:23,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:23,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2023-08-25 21:02:23,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 211.0) internal successors, (1055), 5 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,948 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 69 flow. Second operand 4 states and 414 transitions. [2023-08-25 21:02:23,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 229 flow [2023-08-25 21:02:23,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 46 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 21:02:23,949 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 109 flow [2023-08-25 21:02:23,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2023-08-25 21:02:23,950 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-08-25 21:02:23,950 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 109 flow [2023-08-25 21:02:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:23,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:23,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:23,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-25 21:02:24,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-25 21:02:24,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:24,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:24,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1457812748, now seen corresponding path program 2 times [2023-08-25 21:02:24,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:24,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50377654] [2023-08-25 21:02:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:24,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:24,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50377654] [2023-08-25 21:02:24,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50377654] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:24,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720236633] [2023-08-25 21:02:24,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:24,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:24,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:24,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:24,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 21:02:24,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:24,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:24,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 21:02:24,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:24,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:24,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720236633] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:24,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:24,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-08-25 21:02:24,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971919208] [2023-08-25 21:02:24,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:24,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 21:02:24,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 21:02:24,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-25 21:02:24,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-25 21:02:24,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 109 flow. Second operand has 10 states, 10 states have (on average 88.8) internal successors, (888), 10 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:24,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-25 21:02:24,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:24,560 INFO L124 PetriNetUnfolderBase]: 221/474 cut-off events. [2023-08-25 21:02:24,560 INFO L125 PetriNetUnfolderBase]: For 425/425 co-relation queries the response was YES. [2023-08-25 21:02:24,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 474 events. 221/474 cut-off events. For 425/425 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2350 event pairs, 25 based on Foata normal form. 18/487 useless extension candidates. Maximal degree in co-relation 1229. Up to 192 conditions per place. [2023-08-25 21:02:24,562 INFO L140 encePairwiseOnDemand]: 205/211 looper letters, 36 selfloop transitions, 15 changer transitions 9/64 dead transitions. [2023-08-25 21:02:24,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 64 transitions, 379 flow [2023-08-25 21:02:24,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 21:02:24,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 21:02:24,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 652 transitions. [2023-08-25 21:02:24,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414353419092756 [2023-08-25 21:02:24,563 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 652 transitions. [2023-08-25 21:02:24,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 652 transitions. [2023-08-25 21:02:24,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:24,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 652 transitions. [2023-08-25 21:02:24,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 93.14285714285714) internal successors, (652), 7 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,566 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 211.0) internal successors, (1688), 8 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,566 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 109 flow. Second operand 7 states and 652 transitions. [2023-08-25 21:02:24,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 64 transitions, 379 flow [2023-08-25 21:02:24,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 64 transitions, 377 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 21:02:24,570 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 240 flow [2023-08-25 21:02:24,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-25 21:02:24,571 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-08-25 21:02:24,571 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 240 flow [2023-08-25 21:02:24,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 88.8) internal successors, (888), 10 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:24,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:24,571 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:24,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:24,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:24,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:24,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:24,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1998797512, now seen corresponding path program 3 times [2023-08-25 21:02:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:24,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199681630] [2023-08-25 21:02:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:24,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:24,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199681630] [2023-08-25 21:02:24,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199681630] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:24,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532365922] [2023-08-25 21:02:24,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:24,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:24,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:24,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:24,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 21:02:25,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 21:02:25,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:25,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:02:25,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:25,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:25,205 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:25,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532365922] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:25,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:25,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 18 [2023-08-25 21:02:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245969387] [2023-08-25 21:02:25,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:25,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 21:02:25,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:25,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 21:02:25,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-08-25 21:02:25,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:25,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 240 flow. Second operand has 18 states, 18 states have (on average 84.05555555555556) internal successors, (1513), 18 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:25,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:25,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:25,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:25,722 INFO L124 PetriNetUnfolderBase]: 455/973 cut-off events. [2023-08-25 21:02:25,722 INFO L125 PetriNetUnfolderBase]: For 1929/1937 co-relation queries the response was YES. [2023-08-25 21:02:25,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 973 events. 455/973 cut-off events. For 1929/1937 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5303 event pairs, 6 based on Foata normal form. 46/1016 useless extension candidates. Maximal degree in co-relation 2993. Up to 171 conditions per place. [2023-08-25 21:02:25,726 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 97 selfloop transitions, 64 changer transitions 22/186 dead transitions. [2023-08-25 21:02:25,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 186 transitions, 1317 flow [2023-08-25 21:02:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:02:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:02:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2375 transitions. [2023-08-25 21:02:25,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4168860803931894 [2023-08-25 21:02:25,731 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2375 transitions. [2023-08-25 21:02:25,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2375 transitions. [2023-08-25 21:02:25,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:25,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2375 transitions. [2023-08-25 21:02:25,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 87.96296296296296) internal successors, (2375), 27 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:25,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:25,743 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:25,743 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 240 flow. Second operand 27 states and 2375 transitions. [2023-08-25 21:02:25,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 186 transitions, 1317 flow [2023-08-25 21:02:25,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 186 transitions, 1255 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-25 21:02:25,749 INFO L231 Difference]: Finished difference. Result has 76 places, 88 transitions, 787 flow [2023-08-25 21:02:25,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=787, PETRI_PLACES=76, PETRI_TRANSITIONS=88} [2023-08-25 21:02:25,750 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-08-25 21:02:25,750 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 88 transitions, 787 flow [2023-08-25 21:02:25,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 84.05555555555556) internal successors, (1513), 18 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:25,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:25,751 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:25,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 21:02:25,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:25,956 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:25,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:25,957 INFO L85 PathProgramCache]: Analyzing trace with hash -779332556, now seen corresponding path program 4 times [2023-08-25 21:02:25,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:25,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476898904] [2023-08-25 21:02:25,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:25,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:26,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476898904] [2023-08-25 21:02:26,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476898904] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:26,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434257022] [2023-08-25 21:02:26,063 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:26,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:26,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:26,077 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:26,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 21:02:26,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:26,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:26,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 21:02:26,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:26,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:26,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:26,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434257022] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:26,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:26,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 21:02:26,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018798624] [2023-08-25 21:02:26,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:26,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 21:02:26,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:26,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 21:02:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-08-25 21:02:26,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:26,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 88 transitions, 787 flow. Second operand has 16 states, 16 states have (on average 84.3125) internal successors, (1349), 16 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:26,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:26,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:26,710 INFO L124 PetriNetUnfolderBase]: 584/1248 cut-off events. [2023-08-25 21:02:26,710 INFO L125 PetriNetUnfolderBase]: For 6571/6595 co-relation queries the response was YES. [2023-08-25 21:02:26,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 1248 events. 584/1248 cut-off events. For 6571/6595 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7514 event pairs, 15 based on Foata normal form. 58/1306 useless extension candidates. Maximal degree in co-relation 5114. Up to 209 conditions per place. [2023-08-25 21:02:26,717 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 121 selfloop transitions, 126 changer transitions 6/256 dead transitions. [2023-08-25 21:02:26,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 256 transitions, 2466 flow [2023-08-25 21:02:26,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 21:02:26,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 21:02:26,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2537 transitions. [2023-08-25 21:02:26,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41461023042980877 [2023-08-25 21:02:26,722 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2537 transitions. [2023-08-25 21:02:26,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2537 transitions. [2023-08-25 21:02:26,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:26,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2537 transitions. [2023-08-25 21:02:26,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 87.48275862068965) internal successors, (2537), 29 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 211.0) internal successors, (6330), 30 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,733 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 211.0) internal successors, (6330), 30 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,733 INFO L175 Difference]: Start difference. First operand has 76 places, 88 transitions, 787 flow. Second operand 29 states and 2537 transitions. [2023-08-25 21:02:26,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 256 transitions, 2466 flow [2023-08-25 21:02:26,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 256 transitions, 2316 flow, removed 57 selfloop flow, removed 5 redundant places. [2023-08-25 21:02:26,749 INFO L231 Difference]: Finished difference. Result has 112 places, 166 transitions, 1862 flow [2023-08-25 21:02:26,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1862, PETRI_PLACES=112, PETRI_TRANSITIONS=166} [2023-08-25 21:02:26,750 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 76 predicate places. [2023-08-25 21:02:26,750 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 166 transitions, 1862 flow [2023-08-25 21:02:26,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.3125) internal successors, (1349), 16 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:26,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:26,751 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:26,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-25 21:02:26,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:26,956 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:26,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1170706268, now seen corresponding path program 5 times [2023-08-25 21:02:26,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:26,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518408202] [2023-08-25 21:02:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:26,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:27,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518408202] [2023-08-25 21:02:27,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518408202] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257082946] [2023-08-25 21:02:27,032 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:02:27,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:27,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:27,054 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:27,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 21:02:27,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 21:02:27,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:27,110 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:02:27,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:27,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:27,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:27,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257082946] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:27,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:27,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-08-25 21:02:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124749287] [2023-08-25 21:02:27,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:27,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 21:02:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:27,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 21:02:27,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-25 21:02:27,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:27,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 166 transitions, 1862 flow. Second operand has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:27,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:27,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:27,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:27,602 INFO L124 PetriNetUnfolderBase]: 600/1245 cut-off events. [2023-08-25 21:02:27,602 INFO L125 PetriNetUnfolderBase]: For 10830/10878 co-relation queries the response was YES. [2023-08-25 21:02:27,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6259 conditions, 1245 events. 600/1245 cut-off events. For 10830/10878 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7229 event pairs, 46 based on Foata normal form. 32/1276 useless extension candidates. Maximal degree in co-relation 6225. Up to 485 conditions per place. [2023-08-25 21:02:27,611 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 122 selfloop transitions, 95 changer transitions 0/220 dead transitions. [2023-08-25 21:02:27,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 220 transitions, 2783 flow [2023-08-25 21:02:27,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-25 21:02:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-25 21:02:27,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1395 transitions. [2023-08-25 21:02:27,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41321090047393366 [2023-08-25 21:02:27,615 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1395 transitions. [2023-08-25 21:02:27,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1395 transitions. [2023-08-25 21:02:27,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:27,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1395 transitions. [2023-08-25 21:02:27,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 87.1875) internal successors, (1395), 16 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:27,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 211.0) internal successors, (3587), 17 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:27,622 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 211.0) internal successors, (3587), 17 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:27,622 INFO L175 Difference]: Start difference. First operand has 112 places, 166 transitions, 1862 flow. Second operand 16 states and 1395 transitions. [2023-08-25 21:02:27,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 220 transitions, 2783 flow [2023-08-25 21:02:27,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 220 transitions, 2398 flow, removed 153 selfloop flow, removed 3 redundant places. [2023-08-25 21:02:27,676 INFO L231 Difference]: Finished difference. Result has 126 places, 181 transitions, 1969 flow [2023-08-25 21:02:27,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1969, PETRI_PLACES=126, PETRI_TRANSITIONS=181} [2023-08-25 21:02:27,677 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 90 predicate places. [2023-08-25 21:02:27,677 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 181 transitions, 1969 flow [2023-08-25 21:02:27,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:27,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:27,677 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:27,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 21:02:27,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:27,883 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:27,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:27,883 INFO L85 PathProgramCache]: Analyzing trace with hash -688531264, now seen corresponding path program 6 times [2023-08-25 21:02:27,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:27,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384997985] [2023-08-25 21:02:27,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:27,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:27,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:28,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384997985] [2023-08-25 21:02:28,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384997985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811659967] [2023-08-25 21:02:28,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:02:28,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:28,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:28,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 21:02:28,111 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 21:02:28,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:28,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 21:02:28,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:28,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811659967] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:28,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:28,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 21:02:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890481331] [2023-08-25 21:02:28,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:28,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 21:02:28,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:28,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 21:02:28,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-08-25 21:02:28,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:28,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 181 transitions, 1969 flow. Second operand has 16 states, 16 states have (on average 84.625) internal successors, (1354), 16 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:28,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:28,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:28,926 INFO L124 PetriNetUnfolderBase]: 847/1766 cut-off events. [2023-08-25 21:02:28,926 INFO L125 PetriNetUnfolderBase]: For 13551/13619 co-relation queries the response was YES. [2023-08-25 21:02:28,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8450 conditions, 1766 events. 847/1766 cut-off events. For 13551/13619 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 11127 event pairs, 14 based on Foata normal form. 78/1844 useless extension candidates. Maximal degree in co-relation 8414. Up to 274 conditions per place. [2023-08-25 21:02:28,939 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 126 selfloop transitions, 237 changer transitions 40/406 dead transitions. [2023-08-25 21:02:28,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 406 transitions, 4876 flow [2023-08-25 21:02:28,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 21:02:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 21:02:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2441 transitions. [2023-08-25 21:02:28,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41316858496953285 [2023-08-25 21:02:28,943 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2441 transitions. [2023-08-25 21:02:28,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2441 transitions. [2023-08-25 21:02:28,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:28,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2441 transitions. [2023-08-25 21:02:28,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 87.17857142857143) internal successors, (2441), 28 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 211.0) internal successors, (6119), 29 states have internal predecessors, (6119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,952 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 211.0) internal successors, (6119), 29 states have internal predecessors, (6119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,952 INFO L175 Difference]: Start difference. First operand has 126 places, 181 transitions, 1969 flow. Second operand 28 states and 2441 transitions. [2023-08-25 21:02:28,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 406 transitions, 4876 flow [2023-08-25 21:02:28,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 406 transitions, 4691 flow, removed 38 selfloop flow, removed 8 redundant places. [2023-08-25 21:02:28,989 INFO L231 Difference]: Finished difference. Result has 156 places, 283 transitions, 3809 flow [2023-08-25 21:02:28,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3809, PETRI_PLACES=156, PETRI_TRANSITIONS=283} [2023-08-25 21:02:28,990 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 120 predicate places. [2023-08-25 21:02:28,990 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 283 transitions, 3809 flow [2023-08-25 21:02:28,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.625) internal successors, (1354), 16 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:28,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:28,990 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:29,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-25 21:02:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:29,196 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:29,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:29,196 INFO L85 PathProgramCache]: Analyzing trace with hash -250533140, now seen corresponding path program 7 times [2023-08-25 21:02:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:29,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066002433] [2023-08-25 21:02:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066002433] [2023-08-25 21:02:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066002433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313719922] [2023-08-25 21:02:29,340 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:02:29,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:29,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:29,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:29,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 21:02:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:29,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 21:02:29,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:29,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:29,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:29,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313719922] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:29,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:29,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-25 21:02:29,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076130931] [2023-08-25 21:02:29,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:29,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-25 21:02:29,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:29,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-25 21:02:29,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-08-25 21:02:29,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:29,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 283 transitions, 3809 flow. Second operand has 17 states, 17 states have (on average 84.70588235294117) internal successors, (1440), 17 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:29,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:29,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:29,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:30,072 INFO L124 PetriNetUnfolderBase]: 901/1911 cut-off events. [2023-08-25 21:02:30,073 INFO L125 PetriNetUnfolderBase]: For 20034/20100 co-relation queries the response was YES. [2023-08-25 21:02:30,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10654 conditions, 1911 events. 901/1911 cut-off events. For 20034/20100 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12419 event pairs, 13 based on Foata normal form. 62/1973 useless extension candidates. Maximal degree in co-relation 10607. Up to 305 conditions per place. [2023-08-25 21:02:30,090 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 113 selfloop transitions, 273 changer transitions 1/390 dead transitions. [2023-08-25 21:02:30,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 390 transitions, 5690 flow [2023-08-25 21:02:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-25 21:02:30,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-25 21:02:30,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1827 transitions. [2023-08-25 21:02:30,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41232227488151657 [2023-08-25 21:02:30,093 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1827 transitions. [2023-08-25 21:02:30,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1827 transitions. [2023-08-25 21:02:30,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:30,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1827 transitions. [2023-08-25 21:02:30,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 87.0) internal successors, (1827), 21 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,099 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 211.0) internal successors, (4642), 22 states have internal predecessors, (4642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,099 INFO L175 Difference]: Start difference. First operand has 156 places, 283 transitions, 3809 flow. Second operand 21 states and 1827 transitions. [2023-08-25 21:02:30,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 390 transitions, 5690 flow [2023-08-25 21:02:30,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 390 transitions, 5433 flow, removed 110 selfloop flow, removed 8 redundant places. [2023-08-25 21:02:30,167 INFO L231 Difference]: Finished difference. Result has 172 places, 328 transitions, 5122 flow [2023-08-25 21:02:30,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=3601, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5122, PETRI_PLACES=172, PETRI_TRANSITIONS=328} [2023-08-25 21:02:30,168 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 136 predicate places. [2023-08-25 21:02:30,168 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 328 transitions, 5122 flow [2023-08-25 21:02:30,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 84.70588235294117) internal successors, (1440), 17 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:30,169 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:30,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 21:02:30,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-25 21:02:30,374 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:30,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:30,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1856473082, now seen corresponding path program 8 times [2023-08-25 21:02:30,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:30,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187548225] [2023-08-25 21:02:30,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:30,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:30,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187548225] [2023-08-25 21:02:30,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187548225] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:30,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958357519] [2023-08-25 21:02:30,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:30,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:30,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:30,470 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:30,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 21:02:30,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:30,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:30,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:02:30,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:30,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:30,654 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:30,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958357519] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:30,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:30,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 21:02:30,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816521745] [2023-08-25 21:02:30,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:30,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 21:02:30,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:30,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 21:02:30,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-08-25 21:02:30,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:30,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 328 transitions, 5122 flow. Second operand has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:30,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:30,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:30,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:31,352 INFO L124 PetriNetUnfolderBase]: 985/2053 cut-off events. [2023-08-25 21:02:31,352 INFO L125 PetriNetUnfolderBase]: For 27307/27393 co-relation queries the response was YES. [2023-08-25 21:02:31,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12682 conditions, 2053 events. 985/2053 cut-off events. For 27307/27393 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13480 event pairs, 66 based on Foata normal form. 94/2147 useless extension candidates. Maximal degree in co-relation 12633. Up to 845 conditions per place. [2023-08-25 21:02:31,369 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 191 selfloop transitions, 220 changer transitions 7/421 dead transitions. [2023-08-25 21:02:31,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 421 transitions, 7216 flow [2023-08-25 21:02:31,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 21:02:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 21:02:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1567 transitions. [2023-08-25 21:02:31,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41258557135334384 [2023-08-25 21:02:31,371 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1567 transitions. [2023-08-25 21:02:31,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1567 transitions. [2023-08-25 21:02:31,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:31,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1567 transitions. [2023-08-25 21:02:31,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 87.05555555555556) internal successors, (1567), 18 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:31,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:31,376 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:31,376 INFO L175 Difference]: Start difference. First operand has 172 places, 328 transitions, 5122 flow. Second operand 18 states and 1567 transitions. [2023-08-25 21:02:31,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 421 transitions, 7216 flow [2023-08-25 21:02:31,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 421 transitions, 7105 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-08-25 21:02:31,474 INFO L231 Difference]: Finished difference. Result has 186 places, 357 transitions, 6217 flow [2023-08-25 21:02:31,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=5027, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6217, PETRI_PLACES=186, PETRI_TRANSITIONS=357} [2023-08-25 21:02:31,475 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 150 predicate places. [2023-08-25 21:02:31,475 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 357 transitions, 6217 flow [2023-08-25 21:02:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:31,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:31,475 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:31,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:31,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-25 21:02:31,680 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:31,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1502529052, now seen corresponding path program 9 times [2023-08-25 21:02:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:31,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817099624] [2023-08-25 21:02:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:31,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:31,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817099624] [2023-08-25 21:02:31,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817099624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078606329] [2023-08-25 21:02:31,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:31,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:31,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:31,754 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:31,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 21:02:31,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 21:02:31,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:31,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:02:31,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:31,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:31,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:32,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078606329] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:32,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:32,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 21:02:32,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244309825] [2023-08-25 21:02:32,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:32,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 21:02:32,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:32,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 21:02:32,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-08-25 21:02:32,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:32,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 357 transitions, 6217 flow. Second operand has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:32,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:32,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:32,709 INFO L124 PetriNetUnfolderBase]: 1012/2132 cut-off events. [2023-08-25 21:02:32,709 INFO L125 PetriNetUnfolderBase]: For 35645/35735 co-relation queries the response was YES. [2023-08-25 21:02:32,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13847 conditions, 2132 events. 1012/2132 cut-off events. For 35645/35735 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14239 event pairs, 35 based on Foata normal form. 108/2240 useless extension candidates. Maximal degree in co-relation 13793. Up to 354 conditions per place. [2023-08-25 21:02:32,724 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 138 selfloop transitions, 302 changer transitions 4/447 dead transitions. [2023-08-25 21:02:32,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 447 transitions, 7955 flow [2023-08-25 21:02:32,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:02:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:02:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2343 transitions. [2023-08-25 21:02:32,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112690889942075 [2023-08-25 21:02:32,726 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2343 transitions. [2023-08-25 21:02:32,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2343 transitions. [2023-08-25 21:02:32,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:32,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2343 transitions. [2023-08-25 21:02:32,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 86.77777777777777) internal successors, (2343), 27 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,733 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,734 INFO L175 Difference]: Start difference. First operand has 186 places, 357 transitions, 6217 flow. Second operand 27 states and 2343 transitions. [2023-08-25 21:02:32,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 447 transitions, 7955 flow [2023-08-25 21:02:32,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 447 transitions, 7824 flow, removed 44 selfloop flow, removed 8 redundant places. [2023-08-25 21:02:32,845 INFO L231 Difference]: Finished difference. Result has 206 places, 370 transitions, 7167 flow [2023-08-25 21:02:32,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=5944, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7167, PETRI_PLACES=206, PETRI_TRANSITIONS=370} [2023-08-25 21:02:32,846 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 170 predicate places. [2023-08-25 21:02:32,846 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 370 transitions, 7167 flow [2023-08-25 21:02:32,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 84.4375) internal successors, (1351), 16 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:32,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:32,846 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:32,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:33,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-25 21:02:33,053 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:33,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:33,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1486100340, now seen corresponding path program 10 times [2023-08-25 21:02:33,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:33,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952054441] [2023-08-25 21:02:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:33,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:33,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:33,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952054441] [2023-08-25 21:02:33,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952054441] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:33,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13103610] [2023-08-25 21:02:33,165 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:33,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:33,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:33,193 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:33,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 21:02:33,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:33,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:33,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-25 21:02:33,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:33,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:33,401 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:02:33,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13103610] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:33,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:33,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-08-25 21:02:33,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630913508] [2023-08-25 21:02:33,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:33,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 21:02:33,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:33,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 21:02:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-25 21:02:33,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:33,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 370 transitions, 7167 flow. Second operand has 14 states, 14 states have (on average 84.35714285714286) internal successors, (1181), 14 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:33,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:33,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:33,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:33,849 INFO L124 PetriNetUnfolderBase]: 1009/2113 cut-off events. [2023-08-25 21:02:33,849 INFO L125 PetriNetUnfolderBase]: For 37405/37477 co-relation queries the response was YES. [2023-08-25 21:02:33,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14812 conditions, 2113 events. 1009/2113 cut-off events. For 37405/37477 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 13997 event pairs, 85 based on Foata normal form. 60/2171 useless extension candidates. Maximal degree in co-relation 14755. Up to 1286 conditions per place. [2023-08-25 21:02:33,870 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 316 selfloop transitions, 81 changer transitions 2/402 dead transitions. [2023-08-25 21:02:33,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 402 transitions, 8234 flow [2023-08-25 21:02:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-25 21:02:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-25 21:02:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1135 transitions. [2023-08-25 21:02:33,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41378053226394457 [2023-08-25 21:02:33,872 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1135 transitions. [2023-08-25 21:02:33,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1135 transitions. [2023-08-25 21:02:33,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:33,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1135 transitions. [2023-08-25 21:02:33,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 87.3076923076923) internal successors, (1135), 13 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:33,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 211.0) internal successors, (2954), 14 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:33,876 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 211.0) internal successors, (2954), 14 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:33,876 INFO L175 Difference]: Start difference. First operand has 206 places, 370 transitions, 7167 flow. Second operand 13 states and 1135 transitions. [2023-08-25 21:02:33,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 402 transitions, 8234 flow [2023-08-25 21:02:34,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 402 transitions, 7805 flow, removed 25 selfloop flow, removed 22 redundant places. [2023-08-25 21:02:34,058 INFO L231 Difference]: Finished difference. Result has 196 places, 370 transitions, 6899 flow [2023-08-25 21:02:34,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=6658, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6899, PETRI_PLACES=196, PETRI_TRANSITIONS=370} [2023-08-25 21:02:34,059 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 160 predicate places. [2023-08-25 21:02:34,059 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 370 transitions, 6899 flow [2023-08-25 21:02:34,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 84.35714285714286) internal successors, (1181), 14 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:34,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:34,059 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:34,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-25 21:02:34,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-25 21:02:34,264 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:34,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash 464642341, now seen corresponding path program 11 times [2023-08-25 21:02:34,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:34,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686054995] [2023-08-25 21:02:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:34,393 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:34,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:34,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686054995] [2023-08-25 21:02:34,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686054995] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:34,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364316762] [2023-08-25 21:02:34,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:02:34,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:34,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:34,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:34,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 21:02:34,488 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 21:02:34,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:34,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 21:02:34,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:34,529 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:34,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364316762] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:34,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:34,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 5] total 7 [2023-08-25 21:02:34,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220792664] [2023-08-25 21:02:34,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:34,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-25 21:02:34,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:34,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-25 21:02:34,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-25 21:02:34,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 211 [2023-08-25 21:02:34,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 370 transitions, 6899 flow. Second operand has 9 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:34,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:34,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 211 [2023-08-25 21:02:34,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:35,210 INFO L124 PetriNetUnfolderBase]: 1454/3065 cut-off events. [2023-08-25 21:02:35,210 INFO L125 PetriNetUnfolderBase]: For 49627/49723 co-relation queries the response was YES. [2023-08-25 21:02:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21127 conditions, 3065 events. 1454/3065 cut-off events. For 49627/49723 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22381 event pairs, 119 based on Foata normal form. 67/3115 useless extension candidates. Maximal degree in co-relation 21076. Up to 1360 conditions per place. [2023-08-25 21:02:35,231 INFO L140 encePairwiseOnDemand]: 207/211 looper letters, 379 selfloop transitions, 118 changer transitions 71/579 dead transitions. [2023-08-25 21:02:35,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 579 transitions, 11694 flow [2023-08-25 21:02:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:02:35,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:02:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 520 transitions. [2023-08-25 21:02:35,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928909952606635 [2023-08-25 21:02:35,232 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 520 transitions. [2023-08-25 21:02:35,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 520 transitions. [2023-08-25 21:02:35,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:35,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 520 transitions. [2023-08-25 21:02:35,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,235 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,235 INFO L175 Difference]: Start difference. First operand has 196 places, 370 transitions, 6899 flow. Second operand 5 states and 520 transitions. [2023-08-25 21:02:35,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 579 transitions, 11694 flow [2023-08-25 21:02:35,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 579 transitions, 11540 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-25 21:02:35,463 INFO L231 Difference]: Finished difference. Result has 195 places, 426 transitions, 8414 flow [2023-08-25 21:02:35,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=6793, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8414, PETRI_PLACES=195, PETRI_TRANSITIONS=426} [2023-08-25 21:02:35,464 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 159 predicate places. [2023-08-25 21:02:35,465 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 426 transitions, 8414 flow [2023-08-25 21:02:35,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 97.44444444444444) internal successors, (877), 9 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:35,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:35,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:35,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-25 21:02:35,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-25 21:02:35,669 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:35,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1093566349, now seen corresponding path program 12 times [2023-08-25 21:02:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955052916] [2023-08-25 21:02:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:35,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:35,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955052916] [2023-08-25 21:02:35,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955052916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:35,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469351528] [2023-08-25 21:02:35,836 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:02:35,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:35,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:35,837 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:35,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 21:02:35,974 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 21:02:35,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:35,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:02:35,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:36,026 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:02:36,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:02:36,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469351528] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:36,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:36,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5] total 14 [2023-08-25 21:02:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98359061] [2023-08-25 21:02:36,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:36,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 21:02:36,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:36,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 21:02:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-08-25 21:02:36,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:36,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 426 transitions, 8414 flow. Second operand has 15 states, 15 states have (on average 84.73333333333333) internal successors, (1271), 15 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:36,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:36,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:36,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:36,869 INFO L124 PetriNetUnfolderBase]: 1458/3102 cut-off events. [2023-08-25 21:02:36,870 INFO L125 PetriNetUnfolderBase]: For 55390/55644 co-relation queries the response was YES. [2023-08-25 21:02:36,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22149 conditions, 3102 events. 1458/3102 cut-off events. For 55390/55644 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22679 event pairs, 49 based on Foata normal form. 250/3347 useless extension candidates. Maximal degree in co-relation 22095. Up to 1042 conditions per place. [2023-08-25 21:02:36,896 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 279 selfloop transitions, 247 changer transitions 32/561 dead transitions. [2023-08-25 21:02:36,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 561 transitions, 11158 flow [2023-08-25 21:02:36,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 21:02:36,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 21:02:36,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1589 transitions. [2023-08-25 21:02:36,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41837809373354395 [2023-08-25 21:02:36,898 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1589 transitions. [2023-08-25 21:02:36,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1589 transitions. [2023-08-25 21:02:36,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:36,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1589 transitions. [2023-08-25 21:02:36,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 88.27777777777777) internal successors, (1589), 18 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:36,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:36,902 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 211.0) internal successors, (4009), 19 states have internal predecessors, (4009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:36,902 INFO L175 Difference]: Start difference. First operand has 195 places, 426 transitions, 8414 flow. Second operand 18 states and 1589 transitions. [2023-08-25 21:02:36,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 561 transitions, 11158 flow [2023-08-25 21:02:37,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 561 transitions, 11020 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-08-25 21:02:37,177 INFO L231 Difference]: Finished difference. Result has 218 places, 452 transitions, 9781 flow [2023-08-25 21:02:37,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=8326, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9781, PETRI_PLACES=218, PETRI_TRANSITIONS=452} [2023-08-25 21:02:37,178 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 182 predicate places. [2023-08-25 21:02:37,178 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 452 transitions, 9781 flow [2023-08-25 21:02:37,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 84.73333333333333) internal successors, (1271), 15 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:37,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:37,178 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:37,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:37,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 21:02:37,383 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:37,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:37,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1283545045, now seen corresponding path program 13 times [2023-08-25 21:02:37,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:37,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96725902] [2023-08-25 21:02:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:37,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:37,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:37,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96725902] [2023-08-25 21:02:37,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96725902] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:37,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177941668] [2023-08-25 21:02:37,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:02:37,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:37,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:37,527 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:37,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 21:02:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:37,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 21:02:37,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:37,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:37,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177941668] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:37,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:37,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 21:02:37,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539937595] [2023-08-25 21:02:37,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:37,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:02:37,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:37,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:02:37,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:02:37,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:37,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 452 transitions, 9781 flow. Second operand has 24 states, 24 states have (on average 84.125) internal successors, (2019), 24 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:37,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:37,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:37,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:39,445 INFO L124 PetriNetUnfolderBase]: 1972/4265 cut-off events. [2023-08-25 21:02:39,445 INFO L125 PetriNetUnfolderBase]: For 107653/107985 co-relation queries the response was YES. [2023-08-25 21:02:39,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32606 conditions, 4265 events. 1972/4265 cut-off events. For 107653/107985 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 33075 event pairs, 49 based on Foata normal form. 368/4633 useless extension candidates. Maximal degree in co-relation 32546. Up to 702 conditions per place. [2023-08-25 21:02:39,480 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 286 selfloop transitions, 508 changer transitions 9/806 dead transitions. [2023-08-25 21:02:39,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 806 transitions, 17510 flow [2023-08-25 21:02:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-25 21:02:39,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-25 21:02:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3842 transitions. [2023-08-25 21:02:39,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4138302455838001 [2023-08-25 21:02:39,485 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3842 transitions. [2023-08-25 21:02:39,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3842 transitions. [2023-08-25 21:02:39,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:39,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3842 transitions. [2023-08-25 21:02:39,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 87.31818181818181) internal successors, (3842), 44 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:39,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 211.0) internal successors, (9495), 45 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:39,495 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 211.0) internal successors, (9495), 45 states have internal predecessors, (9495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:39,495 INFO L175 Difference]: Start difference. First operand has 218 places, 452 transitions, 9781 flow. Second operand 44 states and 3842 transitions. [2023-08-25 21:02:39,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 806 transitions, 17510 flow [2023-08-25 21:02:40,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 806 transitions, 17302 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-08-25 21:02:40,203 INFO L231 Difference]: Finished difference. Result has 270 places, 628 transitions, 15366 flow [2023-08-25 21:02:40,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=9575, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=15366, PETRI_PLACES=270, PETRI_TRANSITIONS=628} [2023-08-25 21:02:40,204 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 234 predicate places. [2023-08-25 21:02:40,204 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 628 transitions, 15366 flow [2023-08-25 21:02:40,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.125) internal successors, (2019), 24 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:40,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:40,204 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:40,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-25 21:02:40,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:40,405 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:40,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash -859536019, now seen corresponding path program 14 times [2023-08-25 21:02:40,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:40,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112365678] [2023-08-25 21:02:40,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:40,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:40,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112365678] [2023-08-25 21:02:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112365678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:40,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754658646] [2023-08-25 21:02:40,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:02:40,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:40,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:40,537 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:40,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 21:02:40,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:02:40,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:40,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:02:40,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:40,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:40,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754658646] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:40,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:40,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 21:02:40,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973946656] [2023-08-25 21:02:40,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:40,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:02:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:02:40,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:02:40,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:40,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 628 transitions, 15366 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:02:40,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:40,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:40,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:42,370 INFO L124 PetriNetUnfolderBase]: 2269/4798 cut-off events. [2023-08-25 21:02:42,371 INFO L125 PetriNetUnfolderBase]: For 168305/168741 co-relation queries the response was YES. [2023-08-25 21:02:42,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41809 conditions, 4798 events. 2269/4798 cut-off events. For 168305/168741 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 37054 event pairs, 130 based on Foata normal form. 318/5116 useless extension candidates. Maximal degree in co-relation 41731. Up to 1903 conditions per place. [2023-08-25 21:02:42,422 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 389 selfloop transitions, 420 changer transitions 1/813 dead transitions. [2023-08-25 21:02:42,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 813 transitions, 20968 flow [2023-08-25 21:02:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:02:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:02:42,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2348 transitions. [2023-08-25 21:02:42,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41214674390029843 [2023-08-25 21:02:42,425 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2348 transitions. [2023-08-25 21:02:42,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2348 transitions. [2023-08-25 21:02:42,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:42,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2348 transitions. [2023-08-25 21:02:42,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 86.96296296296296) internal successors, (2348), 27 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:42,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:42,431 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:42,432 INFO L175 Difference]: Start difference. First operand has 270 places, 628 transitions, 15366 flow. Second operand 27 states and 2348 transitions. [2023-08-25 21:02:42,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 813 transitions, 20968 flow [2023-08-25 21:02:43,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 813 transitions, 20507 flow, removed 200 selfloop flow, removed 12 redundant places. [2023-08-25 21:02:43,425 INFO L231 Difference]: Finished difference. Result has 292 places, 727 transitions, 19035 flow [2023-08-25 21:02:43,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=14925, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=19035, PETRI_PLACES=292, PETRI_TRANSITIONS=727} [2023-08-25 21:02:43,426 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 256 predicate places. [2023-08-25 21:02:43,426 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 727 transitions, 19035 flow [2023-08-25 21:02:43,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:02:43,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:43,427 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:43,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:43,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:43,632 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:43,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:43,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1641179553, now seen corresponding path program 15 times [2023-08-25 21:02:43,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:43,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390047686] [2023-08-25 21:02:43,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:43,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:43,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390047686] [2023-08-25 21:02:43,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390047686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327957133] [2023-08-25 21:02:43,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:02:43,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:43,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:43,843 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:43,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 21:02:43,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 21:02:43,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:43,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-25 21:02:43,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:44,154 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:44,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:44,293 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327957133] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:44,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2023-08-25 21:02:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571396372] [2023-08-25 21:02:44,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:44,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:02:44,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:02:44,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:02:44,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:44,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 727 transitions, 19035 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:02:44,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:44,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:44,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:46,204 INFO L124 PetriNetUnfolderBase]: 2569/5464 cut-off events. [2023-08-25 21:02:46,204 INFO L125 PetriNetUnfolderBase]: For 207415/207903 co-relation queries the response was YES. [2023-08-25 21:02:46,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49042 conditions, 5464 events. 2569/5464 cut-off events. For 207415/207903 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 43145 event pairs, 25 based on Foata normal form. 448/5912 useless extension candidates. Maximal degree in co-relation 48956. Up to 929 conditions per place. [2023-08-25 21:02:46,265 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 362 selfloop transitions, 622 changer transitions 17/1004 dead transitions. [2023-08-25 21:02:46,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1004 transitions, 26145 flow [2023-08-25 21:02:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-25 21:02:46,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-25 21:02:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3568 transitions. [2023-08-25 21:02:46,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124378684545139 [2023-08-25 21:02:46,269 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3568 transitions. [2023-08-25 21:02:46,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3568 transitions. [2023-08-25 21:02:46,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:46,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3568 transitions. [2023-08-25 21:02:46,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 87.02439024390245) internal successors, (3568), 41 states have internal predecessors, (3568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:46,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:46,278 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:46,278 INFO L175 Difference]: Start difference. First operand has 292 places, 727 transitions, 19035 flow. Second operand 41 states and 3568 transitions. [2023-08-25 21:02:46,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 1004 transitions, 26145 flow [2023-08-25 21:02:47,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1004 transitions, 25390 flow, removed 275 selfloop flow, removed 14 redundant places. [2023-08-25 21:02:47,780 INFO L231 Difference]: Finished difference. Result has 326 places, 828 transitions, 23033 flow [2023-08-25 21:02:47,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=18279, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=515, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=23033, PETRI_PLACES=326, PETRI_TRANSITIONS=828} [2023-08-25 21:02:47,780 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 290 predicate places. [2023-08-25 21:02:47,780 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 828 transitions, 23033 flow [2023-08-25 21:02:47,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:02:47,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:47,781 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:47,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:47,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:47,990 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:47,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1098141099, now seen corresponding path program 16 times [2023-08-25 21:02:47,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:47,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27900409] [2023-08-25 21:02:47,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:47,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:48,092 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:48,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:48,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27900409] [2023-08-25 21:02:48,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27900409] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:48,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586537227] [2023-08-25 21:02:48,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:02:48,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:48,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:48,094 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:48,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 21:02:48,160 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:02:48,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:48,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:02:48,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:48,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:48,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586537227] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:48,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:48,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 21:02:48,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485875097] [2023-08-25 21:02:48,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:48,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 21:02:48,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:48,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 21:02:48,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2023-08-25 21:02:48,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:48,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 828 transitions, 23033 flow. Second operand has 20 states, 20 states have (on average 84.2) internal successors, (1684), 20 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:48,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:48,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:48,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:50,387 INFO L124 PetriNetUnfolderBase]: 2989/6352 cut-off events. [2023-08-25 21:02:50,387 INFO L125 PetriNetUnfolderBase]: For 214128/214654 co-relation queries the response was YES. [2023-08-25 21:02:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59763 conditions, 6352 events. 2989/6352 cut-off events. For 214128/214654 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 51715 event pairs, 89 based on Foata normal form. 508/6860 useless extension candidates. Maximal degree in co-relation 59671. Up to 1116 conditions per place. [2023-08-25 21:02:50,460 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 308 selfloop transitions, 793 changer transitions 0/1104 dead transitions. [2023-08-25 21:02:50,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1104 transitions, 31329 flow [2023-08-25 21:02:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-25 21:02:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-25 21:02:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3391 transitions. [2023-08-25 21:02:50,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41207923198444524 [2023-08-25 21:02:50,464 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3391 transitions. [2023-08-25 21:02:50,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3391 transitions. [2023-08-25 21:02:50,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:50,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3391 transitions. [2023-08-25 21:02:50,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 86.94871794871794) internal successors, (3391), 39 states have internal predecessors, (3391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:50,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 211.0) internal successors, (8440), 40 states have internal predecessors, (8440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:50,471 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 211.0) internal successors, (8440), 40 states have internal predecessors, (8440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:50,471 INFO L175 Difference]: Start difference. First operand has 326 places, 828 transitions, 23033 flow. Second operand 39 states and 3391 transitions. [2023-08-25 21:02:50,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1104 transitions, 31329 flow [2023-08-25 21:02:52,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 1104 transitions, 30760 flow, removed 157 selfloop flow, removed 13 redundant places. [2023-08-25 21:02:52,595 INFO L231 Difference]: Finished difference. Result has 360 places, 976 transitions, 29892 flow [2023-08-25 21:02:52,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=22597, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=655, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=29892, PETRI_PLACES=360, PETRI_TRANSITIONS=976} [2023-08-25 21:02:52,596 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 324 predicate places. [2023-08-25 21:02:52,597 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 976 transitions, 29892 flow [2023-08-25 21:02:52,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 84.2) internal successors, (1684), 20 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:52,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:52,597 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:52,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:52,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:52,803 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:52,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:52,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1643925993, now seen corresponding path program 17 times [2023-08-25 21:02:52,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:52,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227566113] [2023-08-25 21:02:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:52,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:52,910 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:52,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:52,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227566113] [2023-08-25 21:02:52,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227566113] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:52,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168278084] [2023-08-25 21:02:52,911 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:02:52,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:52,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:52,926 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:52,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 21:02:53,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 21:02:53,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:53,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:02:53,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:53,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:53,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168278084] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:53,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:53,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 21:02:53,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931393306] [2023-08-25 21:02:53,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:53,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:02:53,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:53,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:02:53,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:02:53,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:53,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 976 transitions, 29892 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:02:53,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:53,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:53,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:02:55,656 INFO L124 PetriNetUnfolderBase]: 2961/6246 cut-off events. [2023-08-25 21:02:55,657 INFO L125 PetriNetUnfolderBase]: For 239109/239577 co-relation queries the response was YES. [2023-08-25 21:02:55,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62794 conditions, 6246 events. 2961/6246 cut-off events. For 239109/239577 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 50266 event pairs, 204 based on Foata normal form. 420/6666 useless extension candidates. Maximal degree in co-relation 62694. Up to 2702 conditions per place. [2023-08-25 21:02:55,743 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 390 selfloop transitions, 666 changer transitions 0/1059 dead transitions. [2023-08-25 21:02:55,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 1059 transitions, 33129 flow [2023-08-25 21:02:55,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:02:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:02:55,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2347 transitions. [2023-08-25 21:02:55,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41197121291908023 [2023-08-25 21:02:55,747 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2347 transitions. [2023-08-25 21:02:55,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2347 transitions. [2023-08-25 21:02:55,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:02:55,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2347 transitions. [2023-08-25 21:02:55,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 86.92592592592592) internal successors, (2347), 27 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:55,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:55,753 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:55,753 INFO L175 Difference]: Start difference. First operand has 360 places, 976 transitions, 29892 flow. Second operand 27 states and 2347 transitions. [2023-08-25 21:02:55,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 1059 transitions, 33129 flow [2023-08-25 21:02:58,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 1059 transitions, 32629 flow, removed 131 selfloop flow, removed 19 redundant places. [2023-08-25 21:02:58,362 INFO L231 Difference]: Finished difference. Result has 367 places, 971 transitions, 30638 flow [2023-08-25 21:02:58,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=29082, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=966, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=663, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=30638, PETRI_PLACES=367, PETRI_TRANSITIONS=971} [2023-08-25 21:02:58,363 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 331 predicate places. [2023-08-25 21:02:58,363 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 971 transitions, 30638 flow [2023-08-25 21:02:58,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:02:58,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:02:58,363 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:02:58,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 21:02:58,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:58,568 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:02:58,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:02:58,568 INFO L85 PathProgramCache]: Analyzing trace with hash 599365941, now seen corresponding path program 18 times [2023-08-25 21:02:58,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:02:58,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056094051] [2023-08-25 21:02:58,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:02:58,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:02:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:02:58,681 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:58,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:02:58,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056094051] [2023-08-25 21:02:58,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056094051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:02:58,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097987424] [2023-08-25 21:02:58,681 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:02:58,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:02:58,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:02:58,682 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:02:58,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 21:02:58,786 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 21:02:58,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:02:58,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:02:58,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:02:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:58,910 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:02:59,058 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:02:59,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097987424] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:02:59,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:02:59,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-08-25 21:02:59,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866514278] [2023-08-25 21:02:59,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:02:59,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:02:59,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:02:59,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:02:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:02:59,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:02:59,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 971 transitions, 30638 flow. Second operand has 25 states, 25 states have (on average 84.08) internal successors, (2102), 25 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:02:59,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:02:59,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:02:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:03:01,867 INFO L124 PetriNetUnfolderBase]: 3537/7430 cut-off events. [2023-08-25 21:03:01,867 INFO L125 PetriNetUnfolderBase]: For 306561/307259 co-relation queries the response was YES. [2023-08-25 21:03:01,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77504 conditions, 7430 events. 3537/7430 cut-off events. For 306561/307259 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 61566 event pairs, 67 based on Foata normal form. 604/8034 useless extension candidates. Maximal degree in co-relation 77404. Up to 1378 conditions per place. [2023-08-25 21:03:01,960 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 297 selfloop transitions, 1011 changer transitions 5/1316 dead transitions. [2023-08-25 21:03:01,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 1316 transitions, 41786 flow [2023-08-25 21:03:01,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-25 21:03:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-25 21:03:01,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3557 transitions. [2023-08-25 21:03:01,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41116633915154316 [2023-08-25 21:03:01,963 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3557 transitions. [2023-08-25 21:03:01,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3557 transitions. [2023-08-25 21:03:01,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:03:01,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3557 transitions. [2023-08-25 21:03:01,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 86.7560975609756) internal successors, (3557), 41 states have internal predecessors, (3557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:01,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:01,971 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:01,971 INFO L175 Difference]: Start difference. First operand has 367 places, 971 transitions, 30638 flow. Second operand 41 states and 3557 transitions. [2023-08-25 21:03:01,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 1316 transitions, 41786 flow [2023-08-25 21:03:05,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 1316 transitions, 40688 flow, removed 155 selfloop flow, removed 19 redundant places. [2023-08-25 21:03:05,739 INFO L231 Difference]: Finished difference. Result has 396 places, 1167 transitions, 39011 flow [2023-08-25 21:03:05,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=29692, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=971, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=39011, PETRI_PLACES=396, PETRI_TRANSITIONS=1167} [2023-08-25 21:03:05,741 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 360 predicate places. [2023-08-25 21:03:05,741 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1167 transitions, 39011 flow [2023-08-25 21:03:05,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 84.08) internal successors, (2102), 25 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:05,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:03:05,742 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:03:05,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-25 21:03:05,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:03:05,946 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:03:05,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:03:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash 635152073, now seen corresponding path program 19 times [2023-08-25 21:03:05,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:03:05,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154111699] [2023-08-25 21:03:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:03:05,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:03:05,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:03:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:06,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:03:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154111699] [2023-08-25 21:03:06,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154111699] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:03:06,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228303470] [2023-08-25 21:03:06,056 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:03:06,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:03:06,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:03:06,057 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:03:06,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 21:03:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:03:06,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 21:03:06,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:03:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:06,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:03:06,405 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:06,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228303470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:03:06,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:03:06,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 21:03:06,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238516028] [2023-08-25 21:03:06,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:03:06,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:03:06,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:03:06,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:03:06,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:03:06,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:03:06,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1167 transitions, 39011 flow. Second operand has 21 states, 21 states have (on average 84.28571428571429) internal successors, (1770), 21 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:06,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:03:06,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:03:06,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:03:10,369 INFO L124 PetriNetUnfolderBase]: 4539/9466 cut-off events. [2023-08-25 21:03:10,370 INFO L125 PetriNetUnfolderBase]: For 397040/397628 co-relation queries the response was YES. [2023-08-25 21:03:10,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103575 conditions, 9466 events. 4539/9466 cut-off events. For 397040/397628 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 80668 event pairs, 60 based on Foata normal form. 518/9984 useless extension candidates. Maximal degree in co-relation 103472. Up to 1830 conditions per place. [2023-08-25 21:03:10,509 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 267 selfloop transitions, 1505 changer transitions 131/1906 dead transitions. [2023-08-25 21:03:10,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 1906 transitions, 64568 flow [2023-08-25 21:03:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-25 21:03:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-25 21:03:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3567 transitions. [2023-08-25 21:03:10,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41232227488151657 [2023-08-25 21:03:10,512 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3567 transitions. [2023-08-25 21:03:10,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3567 transitions. [2023-08-25 21:03:10,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:03:10,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3567 transitions. [2023-08-25 21:03:10,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 87.0) internal successors, (3567), 41 states have internal predecessors, (3567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:10,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:10,520 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 211.0) internal successors, (8862), 42 states have internal predecessors, (8862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:10,520 INFO L175 Difference]: Start difference. First operand has 396 places, 1167 transitions, 39011 flow. Second operand 41 states and 3567 transitions. [2023-08-25 21:03:10,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 1906 transitions, 64568 flow [2023-08-25 21:03:16,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 1906 transitions, 63971 flow, removed 197 selfloop flow, removed 18 redundant places. [2023-08-25 21:03:16,378 INFO L231 Difference]: Finished difference. Result has 432 places, 1634 transitions, 59451 flow [2023-08-25 21:03:16,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=38620, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1055, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=59451, PETRI_PLACES=432, PETRI_TRANSITIONS=1634} [2023-08-25 21:03:16,379 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 396 predicate places. [2023-08-25 21:03:16,379 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1634 transitions, 59451 flow [2023-08-25 21:03:16,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 84.28571428571429) internal successors, (1770), 21 states have internal predecessors, (1770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:16,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:03:16,380 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:03:16,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-25 21:03:16,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-25 21:03:16,585 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:03:16,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:03:16,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1081917195, now seen corresponding path program 20 times [2023-08-25 21:03:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:03:16,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378363375] [2023-08-25 21:03:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:03:16,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:03:16,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:03:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:16,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:03:16,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378363375] [2023-08-25 21:03:16,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378363375] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:03:16,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80941007] [2023-08-25 21:03:16,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:03:16,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:03:16,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:03:16,689 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:03:16,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 21:03:16,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:03:16,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:03:16,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 21:03:16,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:03:16,870 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:16,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:03:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:17,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80941007] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:03:17,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:03:17,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2023-08-25 21:03:17,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340742443] [2023-08-25 21:03:17,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:03:17,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:03:17,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:03:17,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:03:17,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:03:17,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:03:17,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1634 transitions, 59451 flow. Second operand has 22 states, 22 states have (on average 84.27272727272727) internal successors, (1854), 22 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:17,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:03:17,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:03:17,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:03:21,951 INFO L124 PetriNetUnfolderBase]: 4841/10213 cut-off events. [2023-08-25 21:03:21,952 INFO L125 PetriNetUnfolderBase]: For 501532/502181 co-relation queries the response was YES. [2023-08-25 21:03:22,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118279 conditions, 10213 events. 4841/10213 cut-off events. For 501532/502181 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 89226 event pairs, 87 based on Foata normal form. 532/10744 useless extension candidates. Maximal degree in co-relation 118162. Up to 1960 conditions per place. [2023-08-25 21:03:22,100 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 318 selfloop transitions, 1641 changer transitions 4/1966 dead transitions. [2023-08-25 21:03:22,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 1966 transitions, 73033 flow [2023-08-25 21:03:22,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 21:03:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 21:03:22,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2954 transitions. [2023-08-25 21:03:22,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2023-08-25 21:03:22,104 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2954 transitions. [2023-08-25 21:03:22,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2954 transitions. [2023-08-25 21:03:22,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:03:22,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2954 transitions. [2023-08-25 21:03:22,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 86.88235294117646) internal successors, (2954), 34 states have internal predecessors, (2954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:22,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:22,111 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:22,111 INFO L175 Difference]: Start difference. First operand has 432 places, 1634 transitions, 59451 flow. Second operand 34 states and 2954 transitions. [2023-08-25 21:03:22,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 1966 transitions, 73033 flow [2023-08-25 21:03:30,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 1966 transitions, 72356 flow, removed 312 selfloop flow, removed 9 redundant places. [2023-08-25 21:03:30,098 INFO L231 Difference]: Finished difference. Result has 461 places, 1848 transitions, 72490 flow [2023-08-25 21:03:30,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=58791, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1425, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=72490, PETRI_PLACES=461, PETRI_TRANSITIONS=1848} [2023-08-25 21:03:30,099 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 425 predicate places. [2023-08-25 21:03:30,099 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 1848 transitions, 72490 flow [2023-08-25 21:03:30,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.27272727272727) internal successors, (1854), 22 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:30,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:03:30,100 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:03:30,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 21:03:30,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-25 21:03:30,305 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:03:30,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:03:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 855879657, now seen corresponding path program 21 times [2023-08-25 21:03:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:03:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120787257] [2023-08-25 21:03:30,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:03:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:03:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:03:30,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:30,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:03:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120787257] [2023-08-25 21:03:30,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120787257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:03:30,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458312677] [2023-08-25 21:03:30,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:03:30,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:03:30,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:03:30,421 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:03:30,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 21:03:30,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 21:03:30,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:03:30,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 21:03:30,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:03:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:30,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:03:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:30,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1458312677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:03:30,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:03:30,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2023-08-25 21:03:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523242150] [2023-08-25 21:03:30,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:03:30,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:03:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:03:30,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:03:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:03:30,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:03:30,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 1848 transitions, 72490 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:03:30,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:03:30,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:03:30,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:03:37,171 INFO L124 PetriNetUnfolderBase]: 5168/10885 cut-off events. [2023-08-25 21:03:37,171 INFO L125 PetriNetUnfolderBase]: For 618249/619003 co-relation queries the response was YES. [2023-08-25 21:03:37,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133966 conditions, 10885 events. 5168/10885 cut-off events. For 618249/619003 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 96295 event pairs, 93 based on Foata normal form. 600/11485 useless extension candidates. Maximal degree in co-relation 133843. Up to 2122 conditions per place. [2023-08-25 21:03:37,326 INFO L140 encePairwiseOnDemand]: 202/211 looper letters, 553 selfloop transitions, 1555 changer transitions 16/2127 dead transitions. [2023-08-25 21:03:37,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 2127 transitions, 83945 flow [2023-08-25 21:03:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-25 21:03:37,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-25 21:03:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3985 transitions. [2023-08-25 21:03:37,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105707809602308 [2023-08-25 21:03:37,329 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3985 transitions. [2023-08-25 21:03:37,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3985 transitions. [2023-08-25 21:03:37,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:03:37,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3985 transitions. [2023-08-25 21:03:37,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 86.6304347826087) internal successors, (3985), 46 states have internal predecessors, (3985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:37,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 211.0) internal successors, (9917), 47 states have internal predecessors, (9917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:37,340 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 211.0) internal successors, (9917), 47 states have internal predecessors, (9917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:37,340 INFO L175 Difference]: Start difference. First operand has 461 places, 1848 transitions, 72490 flow. Second operand 46 states and 3985 transitions. [2023-08-25 21:03:37,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 2127 transitions, 83945 flow [2023-08-25 21:03:48,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 2127 transitions, 83644 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-08-25 21:03:48,694 INFO L231 Difference]: Finished difference. Result has 500 places, 1965 transitions, 81569 flow [2023-08-25 21:03:48,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=72097, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=81569, PETRI_PLACES=500, PETRI_TRANSITIONS=1965} [2023-08-25 21:03:48,696 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 464 predicate places. [2023-08-25 21:03:48,696 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 1965 transitions, 81569 flow [2023-08-25 21:03:48,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:03:48,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:03:48,696 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:03:48,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 21:03:48,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-25 21:03:48,901 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:03:48,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:03:48,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1676128609, now seen corresponding path program 22 times [2023-08-25 21:03:48,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:03:48,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984613676] [2023-08-25 21:03:48,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:03:48,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:03:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:03:49,010 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:03:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984613676] [2023-08-25 21:03:49,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984613676] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:03:49,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237156239] [2023-08-25 21:03:49,011 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:03:49,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:03:49,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:03:49,012 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:03:49,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 21:03:49,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:03:49,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:03:49,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-25 21:03:49,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:03:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:49,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:03:49,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:03:49,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237156239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:03:49,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:03:49,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-08-25 21:03:49,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656007075] [2023-08-25 21:03:49,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:03:49,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-25 21:03:49,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:03:49,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-25 21:03:49,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-08-25 21:03:49,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:03:49,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 1965 transitions, 81569 flow. Second operand has 19 states, 19 states have (on average 84.26315789473684) internal successors, (1601), 19 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:49,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:03:49,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:03:49,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:03:57,166 INFO L124 PetriNetUnfolderBase]: 5539/11604 cut-off events. [2023-08-25 21:03:57,166 INFO L125 PetriNetUnfolderBase]: For 752354/753288 co-relation queries the response was YES. [2023-08-25 21:03:57,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150995 conditions, 11604 events. 5539/11604 cut-off events. For 752354/753288 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 103792 event pairs, 139 based on Foata normal form. 770/12374 useless extension candidates. Maximal degree in co-relation 150864. Up to 2282 conditions per place. [2023-08-25 21:03:57,426 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 568 selfloop transitions, 1716 changer transitions 9/2296 dead transitions. [2023-08-25 21:03:57,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 2296 transitions, 96423 flow [2023-08-25 21:03:57,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-25 21:03:57,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-25 21:03:57,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3729 transitions. [2023-08-25 21:03:57,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41099966934861676 [2023-08-25 21:03:57,429 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3729 transitions. [2023-08-25 21:03:57,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3729 transitions. [2023-08-25 21:03:57,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:03:57,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3729 transitions. [2023-08-25 21:03:57,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 86.72093023255815) internal successors, (3729), 43 states have internal predecessors, (3729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:57,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 211.0) internal successors, (9284), 44 states have internal predecessors, (9284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:57,440 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 211.0) internal successors, (9284), 44 states have internal predecessors, (9284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:03:57,441 INFO L175 Difference]: Start difference. First operand has 500 places, 1965 transitions, 81569 flow. Second operand 43 states and 3729 transitions. [2023-08-25 21:03:57,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 2296 transitions, 96423 flow [2023-08-25 21:04:11,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 2296 transitions, 95617 flow, removed 58 selfloop flow, removed 22 redundant places. [2023-08-25 21:04:11,585 INFO L231 Difference]: Finished difference. Result has 531 places, 2134 transitions, 94344 flow [2023-08-25 21:04:11,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=80797, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1965, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1547, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=94344, PETRI_PLACES=531, PETRI_TRANSITIONS=2134} [2023-08-25 21:04:11,586 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 495 predicate places. [2023-08-25 21:04:11,586 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 2134 transitions, 94344 flow [2023-08-25 21:04:11,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.26315789473684) internal successors, (1601), 19 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:11,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:04:11,587 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:04:11,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 21:04:11,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:04:11,792 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:04:11,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:04:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -163654795, now seen corresponding path program 23 times [2023-08-25 21:04:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:04:11,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228438528] [2023-08-25 21:04:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:04:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:04:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:04:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:04:11,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:04:11,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228438528] [2023-08-25 21:04:11,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228438528] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:04:11,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301347981] [2023-08-25 21:04:11,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:04:11,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:04:11,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:04:11,902 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:04:11,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 21:04:11,995 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 21:04:11,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:04:11,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:04:11,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:04:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:04:12,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:04:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:04:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301347981] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:04:12,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:04:12,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 21:04:12,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523712143] [2023-08-25 21:04:12,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:04:12,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 21:04:12,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:04:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 21:04:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2023-08-25 21:04:12,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:04:12,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 2134 transitions, 94344 flow. Second operand has 21 states, 21 states have (on average 84.23809523809524) internal successors, (1769), 21 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:12,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:04:12,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:04:12,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:04:21,033 INFO L124 PetriNetUnfolderBase]: 5666/11899 cut-off events. [2023-08-25 21:04:21,034 INFO L125 PetriNetUnfolderBase]: For 872761/873749 co-relation queries the response was YES. [2023-08-25 21:04:21,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161060 conditions, 11899 events. 5666/11899 cut-off events. For 872761/873749 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 106681 event pairs, 360 based on Foata normal form. 812/12711 useless extension candidates. Maximal degree in co-relation 160922. Up to 5152 conditions per place. [2023-08-25 21:04:21,245 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 792 selfloop transitions, 1486 changer transitions 8/2289 dead transitions. [2023-08-25 21:04:21,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 2289 transitions, 103090 flow [2023-08-25 21:04:21,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 21:04:21,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 21:04:21,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2091 transitions. [2023-08-25 21:04:21,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41291469194312796 [2023-08-25 21:04:21,247 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2091 transitions. [2023-08-25 21:04:21,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2091 transitions. [2023-08-25 21:04:21,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:04:21,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2091 transitions. [2023-08-25 21:04:21,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 87.125) internal successors, (2091), 24 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:21,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:21,251 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:21,251 INFO L175 Difference]: Start difference. First operand has 531 places, 2134 transitions, 94344 flow. Second operand 24 states and 2091 transitions. [2023-08-25 21:04:21,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 2289 transitions, 103090 flow [2023-08-25 21:04:38,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 2289 transitions, 102018 flow, removed 83 selfloop flow, removed 23 redundant places. [2023-08-25 21:04:38,567 INFO L231 Difference]: Finished difference. Result has 536 places, 2185 transitions, 99689 flow [2023-08-25 21:04:38,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=92684, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1423, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=99689, PETRI_PLACES=536, PETRI_TRANSITIONS=2185} [2023-08-25 21:04:38,568 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 500 predicate places. [2023-08-25 21:04:38,569 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 2185 transitions, 99689 flow [2023-08-25 21:04:38,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 84.23809523809524) internal successors, (1769), 21 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:38,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:04:38,569 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:04:38,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 21:04:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-25 21:04:38,779 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:04:38,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:04:38,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1986045249, now seen corresponding path program 24 times [2023-08-25 21:04:38,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:04:38,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752845175] [2023-08-25 21:04:38,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:04:38,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:04:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:04:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:04:38,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:04:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752845175] [2023-08-25 21:04:38,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752845175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:04:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829863661] [2023-08-25 21:04:38,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:04:38,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:04:38,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:04:38,925 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:04:38,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 21:04:39,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 21:04:39,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:04:39,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-25 21:04:39,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:04:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:04:39,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:04:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:04:39,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829863661] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:04:39,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:04:39,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-25 21:04:39,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166839477] [2023-08-25 21:04:39,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:04:39,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 21:04:39,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:04:39,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 21:04:39,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-08-25 21:04:39,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:04:39,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 2185 transitions, 99689 flow. Second operand has 24 states, 24 states have (on average 84.29166666666667) internal successors, (2023), 24 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:39,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:04:39,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:04:39,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:04:47,844 INFO L124 PetriNetUnfolderBase]: 5873/12236 cut-off events. [2023-08-25 21:04:47,844 INFO L125 PetriNetUnfolderBase]: For 871295/872285 co-relation queries the response was YES. [2023-08-25 21:04:48,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171947 conditions, 12236 events. 5873/12236 cut-off events. For 871295/872285 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 109622 event pairs, 67 based on Foata normal form. 844/13078 useless extension candidates. Maximal degree in co-relation 171808. Up to 4293 conditions per place. [2023-08-25 21:04:48,103 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 1256 selfloop transitions, 1127 changer transitions 28/2414 dead transitions. [2023-08-25 21:04:48,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 2414 transitions, 111299 flow [2023-08-25 21:04:48,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 21:04:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 21:04:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2962 transitions. [2023-08-25 21:04:48,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128798438806802 [2023-08-25 21:04:48,105 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2962 transitions. [2023-08-25 21:04:48,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2962 transitions. [2023-08-25 21:04:48,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:04:48,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2962 transitions. [2023-08-25 21:04:48,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 87.11764705882354) internal successors, (2962), 34 states have internal predecessors, (2962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:48,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:48,114 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 211.0) internal successors, (7385), 35 states have internal predecessors, (7385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:04:48,114 INFO L175 Difference]: Start difference. First operand has 536 places, 2185 transitions, 99689 flow. Second operand 34 states and 2962 transitions. [2023-08-25 21:04:48,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 2414 transitions, 111299 flow [2023-08-25 21:05:04,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 2414 transitions, 110701 flow, removed 191 selfloop flow, removed 11 redundant places. [2023-08-25 21:05:04,546 INFO L231 Difference]: Finished difference. Result has 563 places, 2258 transitions, 105948 flow [2023-08-25 21:05:04,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=98938, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1050, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=105948, PETRI_PLACES=563, PETRI_TRANSITIONS=2258} [2023-08-25 21:05:04,548 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 527 predicate places. [2023-08-25 21:05:04,548 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 2258 transitions, 105948 flow [2023-08-25 21:05:04,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 84.29166666666667) internal successors, (2023), 24 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:04,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:05:04,548 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:05:04,552 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-25 21:05:04,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 21:05:04,752 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:05:04,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:05:04,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1934115117, now seen corresponding path program 25 times [2023-08-25 21:05:04,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:05:04,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134860414] [2023-08-25 21:05:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:05:04,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:05:04,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:05:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:05:04,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:05:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134860414] [2023-08-25 21:05:04,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134860414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:05:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383359321] [2023-08-25 21:05:04,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:05:04,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:05:04,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:05:04,852 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:05:04,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 21:05:04,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:05:04,939 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:05:04,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:05:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:05:05,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:05:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-25 21:05:05,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383359321] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:05:05,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:05:05,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 21:05:05,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276498730] [2023-08-25 21:05:05,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:05:05,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 21:05:05,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:05:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 21:05:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2023-08-25 21:05:05,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:05:05,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 2258 transitions, 105948 flow. Second operand has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:05:05,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:05:05,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:05:05,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:05:13,905 INFO L124 PetriNetUnfolderBase]: 5985/12546 cut-off events. [2023-08-25 21:05:13,905 INFO L125 PetriNetUnfolderBase]: For 1027705/1028835 co-relation queries the response was YES. [2023-08-25 21:05:14,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181207 conditions, 12546 events. 5985/12546 cut-off events. For 1027705/1028835 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 113908 event pairs, 377 based on Foata normal form. 540/13084 useless extension candidates. Maximal degree in co-relation 181064. Up to 9139 conditions per place. [2023-08-25 21:05:14,229 INFO L140 encePairwiseOnDemand]: 204/211 looper letters, 2128 selfloop transitions, 261 changer transitions 7/2399 dead transitions. [2023-08-25 21:05:14,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 2399 transitions, 115616 flow [2023-08-25 21:05:14,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-25 21:05:14,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-25 21:05:14,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2083 transitions. [2023-08-25 21:05:14,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113349131121643 [2023-08-25 21:05:14,231 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2083 transitions. [2023-08-25 21:05:14,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2083 transitions. [2023-08-25 21:05:14,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:05:14,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2083 transitions. [2023-08-25 21:05:14,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.79166666666667) internal successors, (2083), 24 states have internal predecessors, (2083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:14,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:14,235 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 211.0) internal successors, (5275), 25 states have internal predecessors, (5275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:14,235 INFO L175 Difference]: Start difference. First operand has 563 places, 2258 transitions, 105948 flow. Second operand 24 states and 2083 transitions. [2023-08-25 21:05:14,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 2399 transitions, 115616 flow [2023-08-25 21:05:30,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 2399 transitions, 115225 flow, removed 105 selfloop flow, removed 17 redundant places. [2023-08-25 21:05:30,693 INFO L231 Difference]: Finished difference. Result has 574 places, 2317 transitions, 109143 flow [2023-08-25 21:05:30,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=105157, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1997, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=109143, PETRI_PLACES=574, PETRI_TRANSITIONS=2317} [2023-08-25 21:05:30,694 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 538 predicate places. [2023-08-25 21:05:30,694 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 2317 transitions, 109143 flow [2023-08-25 21:05:30,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 84.18181818181819) internal successors, (1852), 22 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) [2023-08-25 21:05:30,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:05:30,695 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:05:30,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-25 21:05:30,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:05:30,898 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:05:30,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:05:30,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2037786430, now seen corresponding path program 26 times [2023-08-25 21:05:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:05:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911516559] [2023-08-25 21:05:30,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:05:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:05:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:05:31,028 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:05:31,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:05:31,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911516559] [2023-08-25 21:05:31,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911516559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:05:31,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084244301] [2023-08-25 21:05:31,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 21:05:31,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:05:31,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:05:31,030 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:05:31,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 21:05:31,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 21:05:31,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:05:31,129 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 21:05:31,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:05:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:05:31,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:05:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:05:31,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084244301] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:05:31,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:05:31,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 24 [2023-08-25 21:05:31,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121268413] [2023-08-25 21:05:31,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:05:31,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-25 21:05:31,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:05:31,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-25 21:05:31,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-08-25 21:05:31,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:05:31,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 2317 transitions, 109143 flow. Second operand has 25 states, 25 states have (on average 84.04) internal successors, (2101), 25 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:31,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:05:31,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:05:31,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:05:40,969 INFO L124 PetriNetUnfolderBase]: 6494/13610 cut-off events. [2023-08-25 21:05:40,969 INFO L125 PetriNetUnfolderBase]: For 1133302/1134670 co-relation queries the response was YES. [2023-08-25 21:05:41,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198903 conditions, 13610 events. 6494/13610 cut-off events. For 1133302/1134670 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 125009 event pairs, 117 based on Foata normal form. 1164/14773 useless extension candidates. Maximal degree in co-relation 198755. Up to 3270 conditions per place. [2023-08-25 21:05:41,273 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 597 selfloop transitions, 2057 changer transitions 21/2678 dead transitions. [2023-08-25 21:05:41,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 2678 transitions, 128417 flow [2023-08-25 21:05:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-25 21:05:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-25 21:05:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2781 transitions. [2023-08-25 21:05:41,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118779620853081 [2023-08-25 21:05:41,277 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2781 transitions. [2023-08-25 21:05:41,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2781 transitions. [2023-08-25 21:05:41,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:05:41,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2781 transitions. [2023-08-25 21:05:41,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 86.90625) internal successors, (2781), 32 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:41,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 211.0) internal successors, (6963), 33 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:41,298 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 211.0) internal successors, (6963), 33 states have internal predecessors, (6963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:05:41,298 INFO L175 Difference]: Start difference. First operand has 574 places, 2317 transitions, 109143 flow. Second operand 32 states and 2781 transitions. [2023-08-25 21:05:41,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 2678 transitions, 128417 flow [2023-08-25 21:06:01,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 2678 transitions, 127107 flow, removed 144 selfloop flow, removed 15 redundant places. [2023-08-25 21:06:01,258 INFO L231 Difference]: Finished difference. Result has 602 places, 2539 transitions, 126850 flow [2023-08-25 21:06:01,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=107577, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1838, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=126850, PETRI_PLACES=602, PETRI_TRANSITIONS=2539} [2023-08-25 21:06:01,260 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 566 predicate places. [2023-08-25 21:06:01,262 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 2539 transitions, 126850 flow [2023-08-25 21:06:01,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 84.04) internal successors, (2101), 25 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:06:01,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:06:01,263 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:06:01,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-25 21:06:01,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:06:01,467 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:06:01,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:06:01,467 INFO L85 PathProgramCache]: Analyzing trace with hash 388951096, now seen corresponding path program 27 times [2023-08-25 21:06:01,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:06:01,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635391347] [2023-08-25 21:06:01,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:06:01,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:06:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:06:01,590 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:06:01,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:06:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635391347] [2023-08-25 21:06:01,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635391347] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:06:01,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831019879] [2023-08-25 21:06:01,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 21:06:01,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:06:01,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:06:01,591 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:06:01,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 21:06:01,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-25 21:06:01,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:06:01,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 21:06:01,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:06:01,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:06:01,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:06:02,120 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:06:02,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831019879] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:06:02,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:06:02,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 26 [2023-08-25 21:06:02,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761130204] [2023-08-25 21:06:02,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:06:02,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 21:06:02,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:06:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 21:06:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2023-08-25 21:06:02,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:06:02,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 2539 transitions, 126850 flow. Second operand has 27 states, 27 states have (on average 83.81481481481481) internal successors, (2263), 27 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:06:02,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:06:02,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:06:02,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:06:17,407 INFO L124 PetriNetUnfolderBase]: 6751/14254 cut-off events. [2023-08-25 21:06:17,408 INFO L125 PetriNetUnfolderBase]: For 1367694/1369182 co-relation queries the response was YES. [2023-08-25 21:06:17,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217715 conditions, 14254 events. 6751/14254 cut-off events. For 1367694/1369182 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 132420 event pairs, 93 based on Foata normal form. 1216/15470 useless extension candidates. Maximal degree in co-relation 217559. Up to 2768 conditions per place. [2023-08-25 21:06:17,692 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 636 selfloop transitions, 2164 changer transitions 29/2832 dead transitions. [2023-08-25 21:06:17,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 2832 transitions, 142950 flow [2023-08-25 21:06:17,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-25 21:06:17,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-25 21:06:17,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3296 transitions. [2023-08-25 21:06:17,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110750810675979 [2023-08-25 21:06:17,695 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3296 transitions. [2023-08-25 21:06:17,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3296 transitions. [2023-08-25 21:06:17,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:06:17,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3296 transitions. [2023-08-25 21:06:17,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 86.73684210526316) internal successors, (3296), 38 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:06:17,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 211.0) internal successors, (8229), 39 states have internal predecessors, (8229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:06:17,701 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 211.0) internal successors, (8229), 39 states have internal predecessors, (8229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:06:17,701 INFO L175 Difference]: Start difference. First operand has 602 places, 2539 transitions, 126850 flow. Second operand 38 states and 3296 transitions. [2023-08-25 21:06:17,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 2832 transitions, 142950 flow [2023-08-25 21:06:43,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 2832 transitions, 141658 flow, removed 353 selfloop flow, removed 15 redundant places. [2023-08-25 21:06:43,589 INFO L231 Difference]: Finished difference. Result has 632 places, 2648 transitions, 137711 flow [2023-08-25 21:06:43,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=125736, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2051, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=137711, PETRI_PLACES=632, PETRI_TRANSITIONS=2648} [2023-08-25 21:06:43,592 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 596 predicate places. [2023-08-25 21:06:43,592 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 2648 transitions, 137711 flow [2023-08-25 21:06:43,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 83.81481481481481) internal successors, (2263), 27 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:06:43,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:06:43,592 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:06:43,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-25 21:06:43,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:06:43,793 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:06:43,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:06:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash 690195448, now seen corresponding path program 28 times [2023-08-25 21:06:43,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:06:43,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437556250] [2023-08-25 21:06:43,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:06:43,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:06:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:06:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:06:43,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:06:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437556250] [2023-08-25 21:06:43,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437556250] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:06:43,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813013077] [2023-08-25 21:06:43,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 21:06:43,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:06:43,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:06:43,941 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:06:43,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-25 21:06:44,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 21:06:44,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:06:44,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 21:06:44,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:06:44,105 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:06:44,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:06:44,280 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 24 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-25 21:06:44,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813013077] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:06:44,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:06:44,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 12 [2023-08-25 21:06:44,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499431398] [2023-08-25 21:06:44,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:06:44,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 21:06:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:06:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 21:06:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-08-25 21:06:44,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 211 [2023-08-25 21:06:44,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 2648 transitions, 137711 flow. Second operand has 14 states, 14 states have (on average 88.85714285714286) internal successors, (1244), 14 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:06:44,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:06:44,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 211 [2023-08-25 21:06:44,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:07:02,185 INFO L124 PetriNetUnfolderBase]: 11297/23754 cut-off events. [2023-08-25 21:07:02,185 INFO L125 PetriNetUnfolderBase]: For 2618387/2620371 co-relation queries the response was YES. [2023-08-25 21:07:03,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377873 conditions, 23754 events. 11297/23754 cut-off events. For 2618387/2620371 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 234736 event pairs, 146 based on Foata normal form. 1470/25202 useless extension candidates. Maximal degree in co-relation 377709. Up to 7340 conditions per place. [2023-08-25 21:07:03,242 INFO L140 encePairwiseOnDemand]: 206/211 looper letters, 2004 selfloop transitions, 2488 changer transitions 230/4728 dead transitions. [2023-08-25 21:07:03,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 4728 transitions, 255773 flow [2023-08-25 21:07:03,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-25 21:07:03,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-25 21:07:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1046 transitions. [2023-08-25 21:07:03,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45066781559672553 [2023-08-25 21:07:03,341 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1046 transitions. [2023-08-25 21:07:03,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1046 transitions. [2023-08-25 21:07:03,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:07:03,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1046 transitions. [2023-08-25 21:07:03,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 95.0909090909091) internal successors, (1046), 11 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:07:03,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 211.0) internal successors, (2532), 12 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:07:03,343 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 211.0) internal successors, (2532), 12 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:07:03,343 INFO L175 Difference]: Start difference. First operand has 632 places, 2648 transitions, 137711 flow. Second operand 11 states and 1046 transitions. [2023-08-25 21:07:03,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 4728 transitions, 255773 flow [2023-08-25 21:08:16,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 4728 transitions, 253366 flow, removed 295 selfloop flow, removed 25 redundant places. [2023-08-25 21:08:16,158 INFO L231 Difference]: Finished difference. Result has 624 places, 3888 transitions, 209893 flow [2023-08-25 21:08:16,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=136285, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1409, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=917, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=209893, PETRI_PLACES=624, PETRI_TRANSITIONS=3888} [2023-08-25 21:08:16,160 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 588 predicate places. [2023-08-25 21:08:16,160 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 3888 transitions, 209893 flow [2023-08-25 21:08:16,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 88.85714285714286) internal successors, (1244), 14 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:08:16,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:08:16,161 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:08:16,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-25 21:08:16,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:08:16,365 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:08:16,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:08:16,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1920894094, now seen corresponding path program 29 times [2023-08-25 21:08:16,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:08:16,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991360159] [2023-08-25 21:08:16,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:08:16,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:08:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:08:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:08:16,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:08:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991360159] [2023-08-25 21:08:16,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991360159] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:08:16,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201682118] [2023-08-25 21:08:16,485 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 21:08:16,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:08:16,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:08:16,487 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:08:16,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-25 21:08:16,594 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-25 21:08:16,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:08:16,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-25 21:08:16,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:08:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:08:16,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:08:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 21:08:16,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201682118] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:08:16,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:08:16,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 17 [2023-08-25 21:08:16,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608071697] [2023-08-25 21:08:16,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:08:16,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 21:08:16,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:08:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 21:08:16,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-08-25 21:08:16,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:08:16,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 3888 transitions, 209893 flow. Second operand has 18 states, 18 states have (on average 84.55555555555556) internal successors, (1522), 18 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:08:16,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:08:16,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:08:16,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:08:47,744 INFO L124 PetriNetUnfolderBase]: 11462/24436 cut-off events. [2023-08-25 21:08:47,744 INFO L125 PetriNetUnfolderBase]: For 2959624/2962641 co-relation queries the response was YES. [2023-08-25 21:08:48,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399348 conditions, 24436 events. 11462/24436 cut-off events. For 2959624/2962641 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 245358 event pairs, 215 based on Foata normal form. 2368/26758 useless extension candidates. Maximal degree in co-relation 399180. Up to 8092 conditions per place. [2023-08-25 21:08:48,259 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 1728 selfloop transitions, 2506 changer transitions 60/4297 dead transitions. [2023-08-25 21:08:48,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 4297 transitions, 235972 flow [2023-08-25 21:08:48,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 21:08:48,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 21:08:48,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2049 transitions. [2023-08-25 21:08:48,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222130640840717 [2023-08-25 21:08:48,261 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2049 transitions. [2023-08-25 21:08:48,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2049 transitions. [2023-08-25 21:08:48,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:08:48,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2049 transitions. [2023-08-25 21:08:48,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 89.08695652173913) internal successors, (2049), 23 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:08:48,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:08:48,265 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 211.0) internal successors, (5064), 24 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:08:48,265 INFO L175 Difference]: Start difference. First operand has 624 places, 3888 transitions, 209893 flow. Second operand 23 states and 2049 transitions. [2023-08-25 21:08:48,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 4297 transitions, 235972 flow [2023-08-25 21:10:14,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 4297 transitions, 234962 flow, removed 477 selfloop flow, removed 3 redundant places. [2023-08-25 21:10:14,525 INFO L231 Difference]: Finished difference. Result has 658 places, 4044 transitions, 227406 flow [2023-08-25 21:10:14,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=208960, PETRI_DIFFERENCE_MINUEND_PLACES=621, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=227406, PETRI_PLACES=658, PETRI_TRANSITIONS=4044} [2023-08-25 21:10:14,528 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 622 predicate places. [2023-08-25 21:10:14,528 INFO L495 AbstractCegarLoop]: Abstraction has has 658 places, 4044 transitions, 227406 flow [2023-08-25 21:10:14,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 84.55555555555556) internal successors, (1522), 18 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:10:14,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:10:14,528 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:10:14,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-25 21:10:14,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-25 21:10:14,731 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:10:14,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:10:14,732 INFO L85 PathProgramCache]: Analyzing trace with hash -608298756, now seen corresponding path program 30 times [2023-08-25 21:10:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:10:14,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013995925] [2023-08-25 21:10:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:10:14,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:10:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:10:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:10:14,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:10:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013995925] [2023-08-25 21:10:14,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013995925] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:10:14,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077031228] [2023-08-25 21:10:14,876 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 21:10:14,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:10:14,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:10:14,877 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:10:14,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-25 21:10:14,989 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 21:10:14,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 21:10:14,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 21:10:14,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:10:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:10:15,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:10:15,441 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:10:15,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077031228] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:10:15,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:10:15,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 27 [2023-08-25 21:10:15,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200001084] [2023-08-25 21:10:15,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:10:15,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-25 21:10:15,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:10:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-25 21:10:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=600, Unknown=0, NotChecked=0, Total=756 [2023-08-25 21:10:15,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:10:15,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 4044 transitions, 227406 flow. Second operand has 28 states, 28 states have (on average 83.85714285714286) internal successors, (2348), 28 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:10:15,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:10:15,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:10:15,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:10:53,593 INFO L124 PetriNetUnfolderBase]: 13641/29003 cut-off events. [2023-08-25 21:10:53,593 INFO L125 PetriNetUnfolderBase]: For 4132463/4136051 co-relation queries the response was YES. [2023-08-25 21:10:54,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495972 conditions, 29003 events. 13641/29003 cut-off events. For 4132463/4136051 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 295293 event pairs, 183 based on Foata normal form. 3480/32482 useless extension candidates. Maximal degree in co-relation 495792. Up to 5353 conditions per place. [2023-08-25 21:10:54,309 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 1316 selfloop transitions, 3790 changer transitions 112/5221 dead transitions. [2023-08-25 21:10:54,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 5221 transitions, 297663 flow [2023-08-25 21:10:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-08-25 21:10:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2023-08-25 21:10:54,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 4608 transitions. [2023-08-25 21:10:54,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4120540105517303 [2023-08-25 21:10:54,338 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 4608 transitions. [2023-08-25 21:10:54,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 4608 transitions. [2023-08-25 21:10:54,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:10:54,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 4608 transitions. [2023-08-25 21:10:54,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 86.94339622641509) internal successors, (4608), 53 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:10:54,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 211.0) internal successors, (11394), 54 states have internal predecessors, (11394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:10:54,345 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 211.0) internal successors, (11394), 54 states have internal predecessors, (11394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:10:54,346 INFO L175 Difference]: Start difference. First operand has 658 places, 4044 transitions, 227406 flow. Second operand 53 states and 4608 transitions. [2023-08-25 21:10:54,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 5221 transitions, 297663 flow [2023-08-25 21:13:09,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 5221 transitions, 294358 flow, removed 343 selfloop flow, removed 14 redundant places. [2023-08-25 21:13:09,570 INFO L231 Difference]: Finished difference. Result has 717 places, 4771 transitions, 281239 flow [2023-08-25 21:13:09,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=211, PETRI_DIFFERENCE_MINUEND_FLOW=223863, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4029, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3049, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=281239, PETRI_PLACES=717, PETRI_TRANSITIONS=4771} [2023-08-25 21:13:09,572 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 681 predicate places. [2023-08-25 21:13:09,573 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 4771 transitions, 281239 flow [2023-08-25 21:13:09,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 83.85714285714286) internal successors, (2348), 28 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:13:09,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:13:09,573 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:13:09,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-25 21:13:09,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:13:09,778 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-08-25 21:13:09,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:13:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1122122770, now seen corresponding path program 31 times [2023-08-25 21:13:09,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:13:09,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435841341] [2023-08-25 21:13:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:13:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:13:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:13:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:13:09,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:13:09,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435841341] [2023-08-25 21:13:09,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435841341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 21:13:09,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204065867] [2023-08-25 21:13:09,976 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 21:13:09,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:13:09,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:13:09,995 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 21:13:09,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-25 21:13:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:13:10,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 21:13:10,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 21:13:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:13:10,242 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 21:13:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:13:10,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204065867] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 21:13:10,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 21:13:10,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-08-25 21:13:10,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786563035] [2023-08-25 21:13:10,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 21:13:10,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 21:13:10,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:13:10,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 21:13:10,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2023-08-25 21:13:10,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 211 [2023-08-25 21:13:10,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 4771 transitions, 281239 flow. Second operand has 27 states, 27 states have (on average 84.0) internal successors, (2268), 27 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:13:10,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:13:10,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 211 [2023-08-25 21:13:10,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:14:00,079 INFO L124 PetriNetUnfolderBase]: 14104/30019 cut-off events. [2023-08-25 21:14:00,079 INFO L125 PetriNetUnfolderBase]: For 4340323/4343856 co-relation queries the response was YES. [2023-08-25 21:14:00,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531698 conditions, 30019 events. 14104/30019 cut-off events. For 4340323/4343856 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 307517 event pairs, 139 based on Foata normal form. 3408/33425 useless extension candidates. Maximal degree in co-relation 531499. Up to 10778 conditions per place. [2023-08-25 21:14:01,125 INFO L140 encePairwiseOnDemand]: 203/211 looper letters, 2287 selfloop transitions, 2847 changer transitions 41/5178 dead transitions. [2023-08-25 21:14:01,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 5178 transitions, 311993 flow [2023-08-25 21:14:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 21:14:01,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 21:14:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2355 transitions. [2023-08-25 21:14:01,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4133754607688257 [2023-08-25 21:14:01,128 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2355 transitions. [2023-08-25 21:14:01,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2355 transitions. [2023-08-25 21:14:01,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:14:01,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2355 transitions. [2023-08-25 21:14:01,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 87.22222222222223) internal successors, (2355), 27 states have internal predecessors, (2355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:14:01,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:14:01,132 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 211.0) internal successors, (5908), 28 states have internal predecessors, (5908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:14:01,132 INFO L175 Difference]: Start difference. First operand has 717 places, 4771 transitions, 281239 flow. Second operand 27 states and 2355 transitions. [2023-08-25 21:14:01,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 5178 transitions, 311993 flow Received shutdown request... [2023-08-25 21:16:36,109 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 21:16:36,117 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 21:16:36,142 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-25 21:16:36,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-25 21:16:36,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 21:16:36,347 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-25 21:16:36,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-08-25 21:16:36,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-08-25 21:16:36,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-08-25 21:16:36,348 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-08-25 21:16:36,349 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-08-25 21:16:36,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-08-25 21:16:36,350 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-08-25 21:16:36,350 INFO L445 BasicCegarLoop]: Path program histogram: [31, 2, 1, 1, 1] [2023-08-25 21:16:36,353 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 21:16:36,353 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 21:16:36,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 09:16:36 BasicIcfg [2023-08-25 21:16:36,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 21:16:36,355 INFO L158 Benchmark]: Toolchain (without parser) took 856960.78ms. Allocated memory was 371.2MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 346.6MB in the beginning and 4.6GB in the end (delta: -4.3GB). Peak memory consumption was 6.5GB. Max. memory is 16.0GB. [2023-08-25 21:16:36,355 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:16:36,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.53ms. Allocated memory is still 371.2MB. Free memory was 346.3MB in the beginning and 335.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-25 21:16:36,355 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.60ms. Allocated memory is still 371.2MB. Free memory was 335.4MB in the beginning and 333.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:16:36,355 INFO L158 Benchmark]: Boogie Preprocessor took 30.96ms. Allocated memory is still 371.2MB. Free memory was 333.7MB in the beginning and 332.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:16:36,355 INFO L158 Benchmark]: RCFGBuilder took 333.92ms. Allocated memory is still 371.2MB. Free memory was 332.1MB in the beginning and 312.7MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-25 21:16:36,355 INFO L158 Benchmark]: TraceAbstraction took 856349.47ms. Allocated memory was 371.2MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 311.9MB in the beginning and 4.6GB in the end (delta: -4.3GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2023-08-25 21:16:36,356 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 371.2MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 199.53ms. Allocated memory is still 371.2MB. Free memory was 346.3MB in the beginning and 335.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.60ms. Allocated memory is still 371.2MB. Free memory was 335.4MB in the beginning and 333.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.96ms. Allocated memory is still 371.2MB. Free memory was 333.7MB in the beginning and 332.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 333.92ms. Allocated memory is still 371.2MB. Free memory was 332.1MB in the beginning and 312.7MB in the end (delta: 19.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 856349.47ms. Allocated memory was 371.2MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 311.9MB in the beginning and 4.6GB in the end (delta: -4.3GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 102 PlacesBefore, 36 PlacesAfterwards, 101 TransitionsBefore, 33 TransitionsAfterwards, 1364 CoEnabledTransitionPairs, 6 FixpointIterations, 47 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 3792 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2148, independent: 2003, independent conditional: 0, independent unconditional: 2003, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 840, independent: 821, independent conditional: 0, independent unconditional: 821, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2148, independent: 1182, independent conditional: 0, independent unconditional: 1182, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 840, unknown conditional: 0, unknown unconditional: 840] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 110, Positive conditional cache size: 0, Positive unconditional cache size: 110, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 856.3s, OverallIterations: 36, TraceHistogramMax: 4, PathProgramHistogramMax: 31, EmptinessCheckTime: 0.0s, AutomataDifference: 832.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2815 SdHoareTripleChecker+Valid, 7.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2815 mSDsluCounter, 456 SdHoareTripleChecker+Invalid, 5.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 728 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14944 IncrementalHoareTripleChecker+Invalid, 15672 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 728 mSolverCounterUnsat, 137 mSDtfsCounter, 14944 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2955 GetRequests, 1785 SyntacticMatches, 61 SemanticMatches, 1109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14140 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=281239occurred in iteration=35, InterpolantAutomatonStates: 852, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 11.1s InterpolantComputationTime, 1827 NumberOfCodeBlocks, 1812 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 2604 ConstructedInterpolants, 0 QuantifiedInterpolants, 15132 SizeOfPredicates, 282 NumberOfNonLiveVariables, 5327 ConjunctsInSsa, 332 ConjunctsInUnsatCore, 99 InterpolantComputations, 5 PerfectInterpolantSequences, 432/1728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout [2023-08-25 21:16:36,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Completed graceful shutdown