/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:48:08,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:48:08,637 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 09:48:08,642 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:48:08,643 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:48:08,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:48:08,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:48:08,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:48:08,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:48:08,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:48:08,677 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:48:08,677 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:48:08,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:48:08,679 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:48:08,679 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:48:08,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:48:08,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:48:08,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:48:08,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:48:08,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:48:08,680 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:48:08,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:48:08,681 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:48:08,681 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:48:08,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:48:08,682 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:48:08,682 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:48:08,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:48:08,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:48:08,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:48:08,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:48:08,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:48:08,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:48:08,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:48:08,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:48:08,684 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:48:08,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:48:09,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:48:09,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:48:09,004 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:48:09,004 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:48:09,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2023-08-26 09:48:10,223 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:48:10,435 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:48:10,436 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2023-08-26 09:48:10,442 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0c645d2/baa98d46b1644595acbbea68f8fc73bc/FLAGd21a8077d [2023-08-26 09:48:10,454 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b0c645d2/baa98d46b1644595acbbea68f8fc73bc [2023-08-26 09:48:10,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:48:10,457 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:48:10,458 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:48:10,458 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:48:10,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:48:10,461 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,462 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596c5332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10, skipping insertion in model container [2023-08-26 09:48:10,462 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,477 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:48:10,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:48:10,649 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:48:10,680 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:48:10,687 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:48:10,687 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:48:10,694 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:48:10,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10 WrapperNode [2023-08-26 09:48:10,695 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:48:10,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:48:10,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:48:10,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:48:10,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,716 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,743 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 98 [2023-08-26 09:48:10,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:48:10,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:48:10,744 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:48:10,744 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:48:10,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,774 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,778 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,780 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:48:10,781 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:48:10,781 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:48:10,781 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:48:10,781 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (1/1) ... [2023-08-26 09:48:10,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:48:10,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:10,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 09:48:10,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 09:48:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:48:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:48:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:48:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:48:10,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:48:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:48:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:48:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:48:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 09:48:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 09:48:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:48:10,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:48:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:48:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:48:10,863 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 09:48:10,951 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:48:10,953 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:48:11,176 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:48:11,231 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:48:11,232 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 09:48:11,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:48:11 BoogieIcfgContainer [2023-08-26 09:48:11,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:48:11,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:48:11,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:48:11,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:48:11,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:48:10" (1/3) ... [2023-08-26 09:48:11,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d268e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:48:11, skipping insertion in model container [2023-08-26 09:48:11,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:48:10" (2/3) ... [2023-08-26 09:48:11,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d268e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:48:11, skipping insertion in model container [2023-08-26 09:48:11,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:48:11" (3/3) ... [2023-08-26 09:48:11,240 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2023-08-26 09:48:11,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:48:11,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-26 09:48:11,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:48:11,339 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 09:48:11,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 230 flow [2023-08-26 09:48:11,443 INFO L124 PetriNetUnfolderBase]: 5/105 cut-off events. [2023-08-26 09:48:11,443 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:48:11,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 5/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 09:48:11,450 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 230 flow [2023-08-26 09:48:11,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 96 transitions, 204 flow [2023-08-26 09:48:11,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:48:11,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 96 transitions, 204 flow [2023-08-26 09:48:11,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 96 transitions, 204 flow [2023-08-26 09:48:11,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 96 transitions, 204 flow [2023-08-26 09:48:11,503 INFO L124 PetriNetUnfolderBase]: 5/96 cut-off events. [2023-08-26 09:48:11,504 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:48:11,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 96 events. 5/96 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 107 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-08-26 09:48:11,507 INFO L119 LiptonReduction]: Number of co-enabled transitions 1636 [2023-08-26 09:48:13,970 INFO L134 LiptonReduction]: Checked pairs total: 3843 [2023-08-26 09:48:13,970 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-26 09:48:13,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:48:13,987 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;@30dddeac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:48:13,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-26 09:48:13,990 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:48:13,990 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-08-26 09:48:13,990 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:48:13,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:13,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:48:13,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:13,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash 459, now seen corresponding path program 1 times [2023-08-26 09:48:14,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:14,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284756892] [2023-08-26 09:48:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:14,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:14,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:14,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:14,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284756892] [2023-08-26 09:48:14,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284756892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:48:14,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:48:14,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:48:14,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398491094] [2023-08-26 09:48:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:48:14,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:48:14,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:48:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:48:14,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 202 [2023-08-26 09:48:14,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 92.5) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:14,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 202 [2023-08-26 09:48:14,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:14,177 INFO L124 PetriNetUnfolderBase]: 44/101 cut-off events. [2023-08-26 09:48:14,178 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-26 09:48:14,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 101 events. 44/101 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 361 event pairs, 18 based on Foata normal form. 25/102 useless extension candidates. Maximal degree in co-relation 144. Up to 74 conditions per place. [2023-08-26 09:48:14,180 INFO L140 encePairwiseOnDemand]: 191/202 looper letters, 13 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-26 09:48:14,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 80 flow [2023-08-26 09:48:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:48:14,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:48:14,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 208 transitions. [2023-08-26 09:48:14,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148514851485149 [2023-08-26 09:48:14,195 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 208 transitions. [2023-08-26 09:48:14,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 208 transitions. [2023-08-26 09:48:14,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:14,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 208 transitions. [2023-08-26 09:48:14,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 104.0) internal successors, (208), 2 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,208 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,210 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 2 states and 208 transitions. [2023-08-26 09:48:14,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 80 flow [2023-08-26 09:48:14,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:48:14,213 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-26 09:48:14,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, 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} [2023-08-26 09:48:14,217 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -12 predicate places. [2023-08-26 09:48:14,218 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-26 09:48:14,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 92.5) internal successors, (185), 2 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:14,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 09:48:14,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:48:14,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:14,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 434944684, now seen corresponding path program 1 times [2023-08-26 09:48:14,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:14,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603931370] [2023-08-26 09:48:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:14,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:14,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603931370] [2023-08-26 09:48:14,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603931370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:48:14,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:48:14,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 09:48:14,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517611866] [2023-08-26 09:48:14,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:48:14,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:48:14,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:14,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:48:14,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:48:14,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 202 [2023-08-26 09:48:14,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:14,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 202 [2023-08-26 09:48:14,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:14,364 INFO L124 PetriNetUnfolderBase]: 96/171 cut-off events. [2023-08-26 09:48:14,364 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-26 09:48:14,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 171 events. 96/171 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 496 event pairs, 32 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 346. Up to 164 conditions per place. [2023-08-26 09:48:14,366 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 20 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-08-26 09:48:14,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 24 transitions, 97 flow [2023-08-26 09:48:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:48:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:48:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-26 09:48:14,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4504950495049505 [2023-08-26 09:48:14,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-26 09:48:14,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-26 09:48:14,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:14,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-26 09:48:14,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,372 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,372 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 273 transitions. [2023-08-26 09:48:14,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 24 transitions, 97 flow [2023-08-26 09:48:14,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:48:14,374 INFO L231 Difference]: Finished difference. Result has 24 places, 21 transitions, 56 flow [2023-08-26 09:48:14,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=21} [2023-08-26 09:48:14,375 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -11 predicate places. [2023-08-26 09:48:14,375 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 21 transitions, 56 flow [2023-08-26 09:48:14,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:14,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 09:48:14,376 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:14,376 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash 314622083, now seen corresponding path program 1 times [2023-08-26 09:48:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:14,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520284350] [2023-08-26 09:48:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:14,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:14,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:14,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:14,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520284350] [2023-08-26 09:48:14,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520284350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:48:14,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:48:14,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 09:48:14,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369101823] [2023-08-26 09:48:14,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:48:14,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 09:48:14,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:14,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 09:48:14,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 09:48:14,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-26 09:48:14,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 21 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:14,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-26 09:48:14,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:14,617 INFO L124 PetriNetUnfolderBase]: 52/129 cut-off events. [2023-08-26 09:48:14,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:48:14,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 129 events. 52/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 513 event pairs, 16 based on Foata normal form. 5/119 useless extension candidates. Maximal degree in co-relation 248. Up to 62 conditions per place. [2023-08-26 09:48:14,619 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 16 selfloop transitions, 2 changer transitions 4/30 dead transitions. [2023-08-26 09:48:14,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 30 transitions, 121 flow [2023-08-26 09:48:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 09:48:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 09:48:14,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-08-26 09:48:14,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48514851485148514 [2023-08-26 09:48:14,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-08-26 09:48:14,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-08-26 09:48:14,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:14,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-08-26 09:48:14,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,624 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,624 INFO L175 Difference]: Start difference. First operand has 24 places, 21 transitions, 56 flow. Second operand 3 states and 294 transitions. [2023-08-26 09:48:14,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 30 transitions, 121 flow [2023-08-26 09:48:14,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 121 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:48:14,626 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 70 flow [2023-08-26 09:48:14,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-08-26 09:48:14,627 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -8 predicate places. [2023-08-26 09:48:14,627 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 70 flow [2023-08-26 09:48:14,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:14,627 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:14,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 09:48:14,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:14,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:14,628 INFO L85 PathProgramCache]: Analyzing trace with hash 868290545, now seen corresponding path program 1 times [2023-08-26 09:48:14,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:14,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661963717] [2023-08-26 09:48:14,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:14,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:14,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:14,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661963717] [2023-08-26 09:48:14,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661963717] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:48:14,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:48:14,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:48:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058534084] [2023-08-26 09:48:14,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:48:14,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:48:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:48:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:48:14,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:14,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 70 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:14,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:14,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:14,848 INFO L124 PetriNetUnfolderBase]: 80/189 cut-off events. [2023-08-26 09:48:14,848 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-26 09:48:14,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 189 events. 80/189 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 805 event pairs, 30 based on Foata normal form. 2/178 useless extension candidates. Maximal degree in co-relation 413. Up to 117 conditions per place. [2023-08-26 09:48:14,851 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 20 selfloop transitions, 5 changer transitions 3/34 dead transitions. [2023-08-26 09:48:14,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 154 flow [2023-08-26 09:48:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:48:14,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:48:14,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 419 transitions. [2023-08-26 09:48:14,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41485148514851483 [2023-08-26 09:48:14,853 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 419 transitions. [2023-08-26 09:48:14,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 419 transitions. [2023-08-26 09:48:14,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:14,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 419 transitions. [2023-08-26 09:48:14,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.8) internal successors, (419), 5 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,859 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,859 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 70 flow. Second operand 5 states and 419 transitions. [2023-08-26 09:48:14,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 154 flow [2023-08-26 09:48:14,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:48:14,861 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 103 flow [2023-08-26 09:48:14,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-26 09:48:14,863 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-08-26 09:48:14,863 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 103 flow [2023-08-26 09:48:14,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:14,864 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:14,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 09:48:14,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:14,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:14,865 INFO L85 PathProgramCache]: Analyzing trace with hash -510214987, now seen corresponding path program 2 times [2023-08-26 09:48:14,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:14,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653499311] [2023-08-26 09:48:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:14,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:14,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653499311] [2023-08-26 09:48:14,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653499311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:48:14,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:48:14,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:48:14,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185473595] [2023-08-26 09:48:14,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:48:14,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:48:14,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:48:14,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:48:14,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:14,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:14,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:14,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:14,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:15,054 INFO L124 PetriNetUnfolderBase]: 81/195 cut-off events. [2023-08-26 09:48:15,054 INFO L125 PetriNetUnfolderBase]: For 202/208 co-relation queries the response was YES. [2023-08-26 09:48:15,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 195 events. 81/195 cut-off events. For 202/208 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 803 event pairs, 29 based on Foata normal form. 4/185 useless extension candidates. Maximal degree in co-relation 529. Up to 100 conditions per place. [2023-08-26 09:48:15,056 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 23 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2023-08-26 09:48:15,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 212 flow [2023-08-26 09:48:15,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:48:15,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:48:15,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 418 transitions. [2023-08-26 09:48:15,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41386138613861384 [2023-08-26 09:48:15,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 418 transitions. [2023-08-26 09:48:15,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 418 transitions. [2023-08-26 09:48:15,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:15,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 418 transitions. [2023-08-26 09:48:15,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.6) internal successors, (418), 5 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,068 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 103 flow. Second operand 5 states and 418 transitions. [2023-08-26 09:48:15,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 212 flow [2023-08-26 09:48:15,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 201 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 09:48:15,071 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 153 flow [2023-08-26 09:48:15,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2023-08-26 09:48:15,072 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-26 09:48:15,072 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 153 flow [2023-08-26 09:48:15,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:15,073 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 09:48:15,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:15,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:15,073 INFO L85 PathProgramCache]: Analyzing trace with hash 42251967, now seen corresponding path program 3 times [2023-08-26 09:48:15,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:15,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549145264] [2023-08-26 09:48:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:15,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:15,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:15,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549145264] [2023-08-26 09:48:15,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549145264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:48:15,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:48:15,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:48:15,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306460928] [2023-08-26 09:48:15,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:48:15,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:48:15,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:15,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:48:15,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:48:15,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:15,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:15,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:15,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:15,273 INFO L124 PetriNetUnfolderBase]: 92/229 cut-off events. [2023-08-26 09:48:15,273 INFO L125 PetriNetUnfolderBase]: For 369/375 co-relation queries the response was YES. [2023-08-26 09:48:15,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 229 events. 92/229 cut-off events. For 369/375 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1048 event pairs, 16 based on Foata normal form. 8/228 useless extension candidates. Maximal degree in co-relation 701. Up to 92 conditions per place. [2023-08-26 09:48:15,275 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 31 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-08-26 09:48:15,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 44 transitions, 283 flow [2023-08-26 09:48:15,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:48:15,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:48:15,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-26 09:48:15,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188118811881188 [2023-08-26 09:48:15,278 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-26 09:48:15,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-26 09:48:15,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:15,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-26 09:48:15,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,283 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 153 flow. Second operand 5 states and 423 transitions. [2023-08-26 09:48:15,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 44 transitions, 283 flow [2023-08-26 09:48:15,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 281 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-26 09:48:15,288 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 192 flow [2023-08-26 09:48:15,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=192, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-26 09:48:15,291 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-26 09:48:15,294 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 192 flow [2023-08-26 09:48:15,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:15,295 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:15,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 09:48:15,295 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:15,295 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:15,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1852070679, now seen corresponding path program 4 times [2023-08-26 09:48:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:15,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324337709] [2023-08-26 09:48:15,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:15,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:15,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:15,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324337709] [2023-08-26 09:48:15,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324337709] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:15,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992656470] [2023-08-26 09:48:15,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:48:15,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:15,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:15,401 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:15,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 09:48:15,469 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:48:15,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:15,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 09:48:15,473 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:15,552 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:15,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992656470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:15,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:15,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-26 09:48:15,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798478265] [2023-08-26 09:48:15,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:15,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 09:48:15,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:15,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 09:48:15,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-26 09:48:15,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:15,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 80.1) internal successors, (801), 10 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:15,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:15,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:15,764 INFO L124 PetriNetUnfolderBase]: 117/286 cut-off events. [2023-08-26 09:48:15,764 INFO L125 PetriNetUnfolderBase]: For 782/797 co-relation queries the response was YES. [2023-08-26 09:48:15,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 286 events. 117/286 cut-off events. For 782/797 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1370 event pairs, 21 based on Foata normal form. 22/299 useless extension candidates. Maximal degree in co-relation 951. Up to 77 conditions per place. [2023-08-26 09:48:15,767 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 40 selfloop transitions, 18 changer transitions 0/64 dead transitions. [2023-08-26 09:48:15,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 64 transitions, 472 flow [2023-08-26 09:48:15,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:48:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:48:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 832 transitions. [2023-08-26 09:48:15,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41188118811881186 [2023-08-26 09:48:15,770 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 832 transitions. [2023-08-26 09:48:15,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 832 transitions. [2023-08-26 09:48:15,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:15,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 832 transitions. [2023-08-26 09:48:15,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 83.2) internal successors, (832), 10 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,776 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,776 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 192 flow. Second operand 10 states and 832 transitions. [2023-08-26 09:48:15,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 64 transitions, 472 flow [2023-08-26 09:48:15,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 465 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 09:48:15,780 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 341 flow [2023-08-26 09:48:15,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=341, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2023-08-26 09:48:15,780 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-26 09:48:15,780 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 341 flow [2023-08-26 09:48:15,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.1) internal successors, (801), 10 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:15,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:15,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:15,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 09:48:15,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:15,986 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:15,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash -143276021, now seen corresponding path program 5 times [2023-08-26 09:48:15,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:15,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96811900] [2023-08-26 09:48:15,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:15,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:16,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:16,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96811900] [2023-08-26 09:48:16,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96811900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:48:16,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:48:16,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 09:48:16,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853975988] [2023-08-26 09:48:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:48:16,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:48:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:16,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:48:16,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:48:16,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:16,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 341 flow. Second operand has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:16,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:16,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:16,123 INFO L124 PetriNetUnfolderBase]: 115/290 cut-off events. [2023-08-26 09:48:16,123 INFO L125 PetriNetUnfolderBase]: For 1277/1305 co-relation queries the response was YES. [2023-08-26 09:48:16,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1132 conditions, 290 events. 115/290 cut-off events. For 1277/1305 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1406 event pairs, 29 based on Foata normal form. 12/287 useless extension candidates. Maximal degree in co-relation 1113. Up to 97 conditions per place. [2023-08-26 09:48:16,126 INFO L140 encePairwiseOnDemand]: 197/202 looper letters, 34 selfloop transitions, 14 changer transitions 2/56 dead transitions. [2023-08-26 09:48:16,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 504 flow [2023-08-26 09:48:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:48:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:48:16,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-26 09:48:16,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4188118811881188 [2023-08-26 09:48:16,128 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-26 09:48:16,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-26 09:48:16,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:16,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-26 09:48:16,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,159 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,159 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 341 flow. Second operand 5 states and 423 transitions. [2023-08-26 09:48:16,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 504 flow [2023-08-26 09:48:16,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 449 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-26 09:48:16,164 INFO L231 Difference]: Finished difference. Result has 58 places, 42 transitions, 330 flow [2023-08-26 09:48:16,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=330, PETRI_PLACES=58, PETRI_TRANSITIONS=42} [2023-08-26 09:48:16,167 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-08-26 09:48:16,167 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 42 transitions, 330 flow [2023-08-26 09:48:16,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.8) internal successors, (404), 5 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:16,168 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:16,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 09:48:16,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:16,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:16,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2016078259, now seen corresponding path program 6 times [2023-08-26 09:48:16,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:16,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445209680] [2023-08-26 09:48:16,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:16,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:16,239 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:16,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:16,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445209680] [2023-08-26 09:48:16,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445209680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:16,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234149628] [2023-08-26 09:48:16,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:48:16,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:16,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:16,241 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:16,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 09:48:16,353 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-26 09:48:16,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:16,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 09:48:16,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:16,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:16,403 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:16,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:16,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234149628] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:16,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:16,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-26 09:48:16,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203070942] [2023-08-26 09:48:16,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:16,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-26 09:48:16,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:16,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-26 09:48:16,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-26 09:48:16,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:16,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 42 transitions, 330 flow. Second operand has 10 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:16,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:16,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:16,551 INFO L124 PetriNetUnfolderBase]: 105/264 cut-off events. [2023-08-26 09:48:16,552 INFO L125 PetriNetUnfolderBase]: For 1321/1349 co-relation queries the response was YES. [2023-08-26 09:48:16,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 264 events. 105/264 cut-off events. For 1321/1349 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1240 event pairs, 34 based on Foata normal form. 22/273 useless extension candidates. Maximal degree in co-relation 965. Up to 112 conditions per place. [2023-08-26 09:48:16,554 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 30 selfloop transitions, 17 changer transitions 1/54 dead transitions. [2023-08-26 09:48:16,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 478 flow [2023-08-26 09:48:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 09:48:16,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 09:48:16,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 504 transitions. [2023-08-26 09:48:16,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158415841584158 [2023-08-26 09:48:16,557 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 504 transitions. [2023-08-26 09:48:16,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 504 transitions. [2023-08-26 09:48:16,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:16,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 504 transitions. [2023-08-26 09:48:16,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.0) internal successors, (504), 6 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,561 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,561 INFO L175 Difference]: Start difference. First operand has 58 places, 42 transitions, 330 flow. Second operand 6 states and 504 transitions. [2023-08-26 09:48:16,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 478 flow [2023-08-26 09:48:16,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 447 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 09:48:16,565 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 345 flow [2023-08-26 09:48:16,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=345, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2023-08-26 09:48:16,566 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 25 predicate places. [2023-08-26 09:48:16,566 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 345 flow [2023-08-26 09:48:16,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 80.7) internal successors, (807), 10 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:16,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:16,567 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:16,572 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 09:48:16,772 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,SelfDestructingSolverStorable8 [2023-08-26 09:48:16,772 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:16,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:16,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1334733930, now seen corresponding path program 1 times [2023-08-26 09:48:16,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:16,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963467744] [2023-08-26 09:48:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:16,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:16,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:16,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963467744] [2023-08-26 09:48:16,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963467744] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:16,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391603777] [2023-08-26 09:48:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:16,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:16,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:16,875 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:16,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 09:48:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:16,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 09:48:16,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:17,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:17,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:17,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391603777] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:17,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:17,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-08-26 09:48:17,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048999343] [2023-08-26 09:48:17,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:17,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:48:17,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:17,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:48:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 09:48:17,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-26 09:48:17,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:17,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-26 09:48:17,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:17,124 INFO L124 PetriNetUnfolderBase]: 171/419 cut-off events. [2023-08-26 09:48:17,124 INFO L125 PetriNetUnfolderBase]: For 1611/1662 co-relation queries the response was YES. [2023-08-26 09:48:17,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1564 conditions, 419 events. 171/419 cut-off events. For 1611/1662 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2235 event pairs, 37 based on Foata normal form. 14/402 useless extension candidates. Maximal degree in co-relation 1543. Up to 143 conditions per place. [2023-08-26 09:48:17,128 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 41 selfloop transitions, 11 changer transitions 9/73 dead transitions. [2023-08-26 09:48:17,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 73 transitions, 657 flow [2023-08-26 09:48:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 09:48:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 09:48:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2023-08-26 09:48:17,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48886138613861385 [2023-08-26 09:48:17,130 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2023-08-26 09:48:17,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2023-08-26 09:48:17,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:17,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2023-08-26 09:48:17,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 98.75) internal successors, (395), 4 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,132 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 202.0) internal successors, (1010), 5 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,133 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 345 flow. Second operand 4 states and 395 transitions. [2023-08-26 09:48:17,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 73 transitions, 657 flow [2023-08-26 09:48:17,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 560 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-26 09:48:17,137 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 398 flow [2023-08-26 09:48:17,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=398, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-08-26 09:48:17,138 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-08-26 09:48:17,138 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 398 flow [2023-08-26 09:48:17,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:17,139 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:17,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:17,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:17,343 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:17,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:17,344 INFO L85 PathProgramCache]: Analyzing trace with hash -315345176, now seen corresponding path program 2 times [2023-08-26 09:48:17,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:17,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189955661] [2023-08-26 09:48:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:17,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:17,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189955661] [2023-08-26 09:48:17,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189955661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:17,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426617891] [2023-08-26 09:48:17,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:48:17,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:17,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:17,457 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:17,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:48:17,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:48:17,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:17,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:17,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:17,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:17,672 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:17,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426617891] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:17,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:17,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:48:17,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557335572] [2023-08-26 09:48:17,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:17,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:48:17,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:17,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:48:17,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:48:17,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:17,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 398 flow. Second operand has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:17,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:17,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:17,951 INFO L124 PetriNetUnfolderBase]: 298/691 cut-off events. [2023-08-26 09:48:17,951 INFO L125 PetriNetUnfolderBase]: For 2244/2361 co-relation queries the response was YES. [2023-08-26 09:48:17,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2482 conditions, 691 events. 298/691 cut-off events. For 2244/2361 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3795 event pairs, 71 based on Foata normal form. 78/733 useless extension candidates. Maximal degree in co-relation 2463. Up to 214 conditions per place. [2023-08-26 09:48:17,957 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 50 selfloop transitions, 40 changer transitions 1/97 dead transitions. [2023-08-26 09:48:17,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 97 transitions, 875 flow [2023-08-26 09:48:17,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-26 09:48:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-26 09:48:17,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1239 transitions. [2023-08-26 09:48:17,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089108910891089 [2023-08-26 09:48:17,961 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1239 transitions. [2023-08-26 09:48:17,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1239 transitions. [2023-08-26 09:48:17,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:17,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1239 transitions. [2023-08-26 09:48:17,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 82.6) internal successors, (1239), 15 states have internal predecessors, (1239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 202.0) internal successors, (3232), 16 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,970 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 202.0) internal successors, (3232), 16 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,970 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 398 flow. Second operand 15 states and 1239 transitions. [2023-08-26 09:48:17,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 97 transitions, 875 flow [2023-08-26 09:48:17,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 97 transitions, 849 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-26 09:48:17,978 INFO L231 Difference]: Finished difference. Result has 76 places, 72 transitions, 697 flow [2023-08-26 09:48:17,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=697, PETRI_PLACES=76, PETRI_TRANSITIONS=72} [2023-08-26 09:48:17,979 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2023-08-26 09:48:17,979 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 72 transitions, 697 flow [2023-08-26 09:48:17,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:17,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:17,979 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:17,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:18,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:18,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:18,191 INFO L85 PathProgramCache]: Analyzing trace with hash 903132036, now seen corresponding path program 3 times [2023-08-26 09:48:18,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822164298] [2023-08-26 09:48:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:18,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:18,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822164298] [2023-08-26 09:48:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822164298] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274610589] [2023-08-26 09:48:18,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:48:18,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:18,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:18,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:48:18,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:48:18,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:18,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:18,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:18,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:48:18,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274610589] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:18,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:18,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:48:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259276390] [2023-08-26 09:48:18,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:18,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:48:18,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:48:18,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:48:18,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:18,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 72 transitions, 697 flow. Second operand has 13 states, 13 states have (on average 80.23076923076923) internal successors, (1043), 13 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:18,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:18,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:18,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:18,816 INFO L124 PetriNetUnfolderBase]: 299/730 cut-off events. [2023-08-26 09:48:18,816 INFO L125 PetriNetUnfolderBase]: For 4192/4338 co-relation queries the response was YES. [2023-08-26 09:48:18,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2975 conditions, 730 events. 299/730 cut-off events. For 4192/4338 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4198 event pairs, 67 based on Foata normal form. 157/851 useless extension candidates. Maximal degree in co-relation 2951. Up to 184 conditions per place. [2023-08-26 09:48:18,823 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 53 selfloop transitions, 50 changer transitions 1/110 dead transitions. [2023-08-26 09:48:18,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 110 transitions, 1148 flow [2023-08-26 09:48:18,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-26 09:48:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-26 09:48:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1411 transitions. [2023-08-26 09:48:18,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41089108910891087 [2023-08-26 09:48:18,827 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1411 transitions. [2023-08-26 09:48:18,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1411 transitions. [2023-08-26 09:48:18,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:18,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1411 transitions. [2023-08-26 09:48:18,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 83.0) internal successors, (1411), 17 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:18,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 202.0) internal successors, (3636), 18 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:18,836 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 202.0) internal successors, (3636), 18 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:18,836 INFO L175 Difference]: Start difference. First operand has 76 places, 72 transitions, 697 flow. Second operand 17 states and 1411 transitions. [2023-08-26 09:48:18,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 110 transitions, 1148 flow [2023-08-26 09:48:18,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 110 transitions, 998 flow, removed 52 selfloop flow, removed 7 redundant places. [2023-08-26 09:48:18,848 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 786 flow [2023-08-26 09:48:18,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=786, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2023-08-26 09:48:18,848 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 54 predicate places. [2023-08-26 09:48:18,848 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 786 flow [2023-08-26 09:48:18,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.23076923076923) internal successors, (1043), 13 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:18,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:18,849 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:18,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:19,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 09:48:19,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:19,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1330282894, now seen corresponding path program 4 times [2023-08-26 09:48:19,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:19,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611973396] [2023-08-26 09:48:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:19,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:19,134 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:19,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611973396] [2023-08-26 09:48:19,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611973396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:19,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233691090] [2023-08-26 09:48:19,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:48:19,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:19,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:19,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:19,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:48:19,205 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:48:19,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:19,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:19,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:19,283 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:19,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233691090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:19,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:19,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-26 09:48:19,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9002874] [2023-08-26 09:48:19,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:19,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:48:19,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:19,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:48:19,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:48:19,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:19,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 786 flow. Second operand has 15 states, 15 states have (on average 79.86666666666666) internal successors, (1198), 15 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:19,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:19,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:19,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:19,735 INFO L124 PetriNetUnfolderBase]: 354/870 cut-off events. [2023-08-26 09:48:19,735 INFO L125 PetriNetUnfolderBase]: For 5197/5369 co-relation queries the response was YES. [2023-08-26 09:48:19,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 870 events. 354/870 cut-off events. For 5197/5369 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5169 event pairs, 76 based on Foata normal form. 160/991 useless extension candidates. Maximal degree in co-relation 3570. Up to 189 conditions per place. [2023-08-26 09:48:19,743 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 65 selfloop transitions, 70 changer transitions 0/141 dead transitions. [2023-08-26 09:48:19,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 141 transitions, 1450 flow [2023-08-26 09:48:19,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-26 09:48:19,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-26 09:48:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1899 transitions. [2023-08-26 09:48:19,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4087386999569522 [2023-08-26 09:48:19,750 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1899 transitions. [2023-08-26 09:48:19,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1899 transitions. [2023-08-26 09:48:19,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:19,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1899 transitions. [2023-08-26 09:48:19,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 82.56521739130434) internal successors, (1899), 23 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:19,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 202.0) internal successors, (4848), 24 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:19,762 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 202.0) internal successors, (4848), 24 states have internal predecessors, (4848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:19,762 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 786 flow. Second operand 23 states and 1899 transitions. [2023-08-26 09:48:19,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 141 transitions, 1450 flow [2023-08-26 09:48:19,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 141 transitions, 1300 flow, removed 31 selfloop flow, removed 10 redundant places. [2023-08-26 09:48:19,775 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 1062 flow [2023-08-26 09:48:19,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1062, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2023-08-26 09:48:19,776 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2023-08-26 09:48:19,776 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 1062 flow [2023-08-26 09:48:19,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.86666666666666) internal successors, (1198), 15 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:19,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:19,776 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:19,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:19,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:19,981 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:19,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash -230649462, now seen corresponding path program 5 times [2023-08-26 09:48:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:19,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012667076] [2023-08-26 09:48:19,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:19,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012667076] [2023-08-26 09:48:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012667076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612627863] [2023-08-26 09:48:20,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:48:20,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:20,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:20,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:20,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:48:20,155 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:48:20,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:20,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:20,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:20,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:20,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612627863] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:20,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:20,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-26 09:48:20,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000731488] [2023-08-26 09:48:20,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:20,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-26 09:48:20,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:20,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-26 09:48:20,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-26 09:48:20,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:20,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 1062 flow. Second operand has 11 states, 11 states have (on average 80.0909090909091) internal successors, (881), 11 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:20,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:20,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:20,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:20,488 INFO L124 PetriNetUnfolderBase]: 477/1198 cut-off events. [2023-08-26 09:48:20,488 INFO L125 PetriNetUnfolderBase]: For 7955/8165 co-relation queries the response was YES. [2023-08-26 09:48:20,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5241 conditions, 1198 events. 477/1198 cut-off events. For 7955/8165 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 7641 event pairs, 87 based on Foata normal form. 139/1294 useless extension candidates. Maximal degree in co-relation 5208. Up to 257 conditions per place. [2023-08-26 09:48:20,501 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 94 selfloop transitions, 60 changer transitions 8/168 dead transitions. [2023-08-26 09:48:20,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 168 transitions, 1991 flow [2023-08-26 09:48:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-26 09:48:20,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-26 09:48:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 841 transitions. [2023-08-26 09:48:20,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163366336633663 [2023-08-26 09:48:20,504 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 841 transitions. [2023-08-26 09:48:20,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 841 transitions. [2023-08-26 09:48:20,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:20,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 841 transitions. [2023-08-26 09:48:20,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.1) internal successors, (841), 10 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:20,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:20,509 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 202.0) internal successors, (2222), 11 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:20,509 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 1062 flow. Second operand 10 states and 841 transitions. [2023-08-26 09:48:20,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 168 transitions, 1991 flow [2023-08-26 09:48:20,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 168 transitions, 1770 flow, removed 75 selfloop flow, removed 10 redundant places. [2023-08-26 09:48:20,534 INFO L231 Difference]: Finished difference. Result has 110 places, 131 transitions, 1500 flow [2023-08-26 09:48:20,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1500, PETRI_PLACES=110, PETRI_TRANSITIONS=131} [2023-08-26 09:48:20,535 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 75 predicate places. [2023-08-26 09:48:20,535 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 131 transitions, 1500 flow [2023-08-26 09:48:20,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 80.0909090909091) internal successors, (881), 11 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:20,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:20,536 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:20,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:20,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:20,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash 448774274, now seen corresponding path program 6 times [2023-08-26 09:48:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:20,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980959790] [2023-08-26 09:48:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:20,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:20,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:20,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:20,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980959790] [2023-08-26 09:48:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980959790] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:20,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227179588] [2023-08-26 09:48:20,834 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:48:20,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:20,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:20,835 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:20,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:48:20,930 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-26 09:48:20,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:20,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:20,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:21,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:21,058 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:21,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227179588] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:21,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:21,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-08-26 09:48:21,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983827198] [2023-08-26 09:48:21,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:21,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:48:21,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:21,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:48:21,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:48:21,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:21,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 131 transitions, 1500 flow. Second operand has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:21,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:21,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:21,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:21,478 INFO L124 PetriNetUnfolderBase]: 550/1411 cut-off events. [2023-08-26 09:48:21,478 INFO L125 PetriNetUnfolderBase]: For 9196/9359 co-relation queries the response was YES. [2023-08-26 09:48:21,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6309 conditions, 1411 events. 550/1411 cut-off events. For 9196/9359 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 9360 event pairs, 127 based on Foata normal form. 81/1435 useless extension candidates. Maximal degree in co-relation 6269. Up to 298 conditions per place. [2023-08-26 09:48:21,492 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 91 selfloop transitions, 88 changer transitions 1/186 dead transitions. [2023-08-26 09:48:21,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 186 transitions, 2281 flow [2023-08-26 09:48:21,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:48:21,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:48:21,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1161 transitions. [2023-08-26 09:48:21,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41053748231966053 [2023-08-26 09:48:21,495 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1161 transitions. [2023-08-26 09:48:21,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1161 transitions. [2023-08-26 09:48:21,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:21,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1161 transitions. [2023-08-26 09:48:21,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.92857142857143) internal successors, (1161), 14 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:21,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:21,502 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:21,502 INFO L175 Difference]: Start difference. First operand has 110 places, 131 transitions, 1500 flow. Second operand 14 states and 1161 transitions. [2023-08-26 09:48:21,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 186 transitions, 2281 flow [2023-08-26 09:48:21,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 2158 flow, removed 29 selfloop flow, removed 5 redundant places. [2023-08-26 09:48:21,534 INFO L231 Difference]: Finished difference. Result has 125 places, 156 transitions, 1957 flow [2023-08-26 09:48:21,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1957, PETRI_PLACES=125, PETRI_TRANSITIONS=156} [2023-08-26 09:48:21,534 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 90 predicate places. [2023-08-26 09:48:21,534 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 156 transitions, 1957 flow [2023-08-26 09:48:21,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.15384615384616) internal successors, (1042), 13 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:21,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:21,535 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:21,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:21,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 09:48:21,740 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:21,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 125609296, now seen corresponding path program 7 times [2023-08-26 09:48:21,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:21,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738539538] [2023-08-26 09:48:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:21,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:21,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738539538] [2023-08-26 09:48:21,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738539538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:21,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120027422] [2023-08-26 09:48:21,823 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:48:21,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:21,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:21,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:21,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:48:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:21,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:21,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:21,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:22,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:22,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120027422] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:22,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:22,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:48:22,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613909410] [2023-08-26 09:48:22,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:22,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:48:22,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:22,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:48:22,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:48:22,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:22,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 156 transitions, 1957 flow. Second operand has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:22,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:22,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:22,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:22,436 INFO L124 PetriNetUnfolderBase]: 645/1638 cut-off events. [2023-08-26 09:48:22,437 INFO L125 PetriNetUnfolderBase]: For 12514/12682 co-relation queries the response was YES. [2023-08-26 09:48:22,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7750 conditions, 1638 events. 645/1638 cut-off events. For 12514/12682 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11374 event pairs, 137 based on Foata normal form. 139/1720 useless extension candidates. Maximal degree in co-relation 7705. Up to 341 conditions per place. [2023-08-26 09:48:22,457 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 69 selfloop transitions, 132 changer transitions 0/207 dead transitions. [2023-08-26 09:48:22,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 207 transitions, 2811 flow [2023-08-26 09:48:22,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:48:22,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:48:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1327 transitions. [2023-08-26 09:48:22,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41058168316831684 [2023-08-26 09:48:22,460 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1327 transitions. [2023-08-26 09:48:22,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1327 transitions. [2023-08-26 09:48:22,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:22,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1327 transitions. [2023-08-26 09:48:22,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 82.9375) internal successors, (1327), 16 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:22,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:22,467 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:22,467 INFO L175 Difference]: Start difference. First operand has 125 places, 156 transitions, 1957 flow. Second operand 16 states and 1327 transitions. [2023-08-26 09:48:22,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 207 transitions, 2811 flow [2023-08-26 09:48:22,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 207 transitions, 2702 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-08-26 09:48:22,512 INFO L231 Difference]: Finished difference. Result has 139 places, 178 transitions, 2533 flow [2023-08-26 09:48:22,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2533, PETRI_PLACES=139, PETRI_TRANSITIONS=178} [2023-08-26 09:48:22,513 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2023-08-26 09:48:22,513 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 178 transitions, 2533 flow [2023-08-26 09:48:22,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:22,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:22,514 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:22,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:22,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 09:48:22,720 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:22,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:22,720 INFO L85 PathProgramCache]: Analyzing trace with hash 643369194, now seen corresponding path program 8 times [2023-08-26 09:48:22,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:22,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446687545] [2023-08-26 09:48:22,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:22,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:22,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446687545] [2023-08-26 09:48:22,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446687545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:22,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933182741] [2023-08-26 09:48:22,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:48:22,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:22,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:22,833 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:22,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 09:48:22,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:48:22,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:22,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:22,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:22,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:22,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:23,031 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:23,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933182741] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:23,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:23,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-26 09:48:23,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089796767] [2023-08-26 09:48:23,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:23,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:48:23,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:23,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:48:23,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:48:23,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:23,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 178 transitions, 2533 flow. Second operand has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:23,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:23,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:23,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:23,418 INFO L124 PetriNetUnfolderBase]: 640/1663 cut-off events. [2023-08-26 09:48:23,418 INFO L125 PetriNetUnfolderBase]: For 17175/17356 co-relation queries the response was YES. [2023-08-26 09:48:23,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8396 conditions, 1663 events. 640/1663 cut-off events. For 17175/17356 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 11896 event pairs, 202 based on Foata normal form. 110/1718 useless extension candidates. Maximal degree in co-relation 8347. Up to 598 conditions per place. [2023-08-26 09:48:23,440 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 91 selfloop transitions, 104 changer transitions 2/203 dead transitions. [2023-08-26 09:48:23,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 203 transitions, 3116 flow [2023-08-26 09:48:23,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-26 09:48:23,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-26 09:48:23,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1155 transitions. [2023-08-26 09:48:23,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084158415841584 [2023-08-26 09:48:23,442 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1155 transitions. [2023-08-26 09:48:23,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1155 transitions. [2023-08-26 09:48:23,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:23,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1155 transitions. [2023-08-26 09:48:23,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 82.5) internal successors, (1155), 14 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:23,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:23,448 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 202.0) internal successors, (3030), 15 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:23,448 INFO L175 Difference]: Start difference. First operand has 139 places, 178 transitions, 2533 flow. Second operand 14 states and 1155 transitions. [2023-08-26 09:48:23,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 203 transitions, 3116 flow [2023-08-26 09:48:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 203 transitions, 2936 flow, removed 49 selfloop flow, removed 8 redundant places. [2023-08-26 09:48:23,512 INFO L231 Difference]: Finished difference. Result has 146 places, 178 transitions, 2578 flow [2023-08-26 09:48:23,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2578, PETRI_PLACES=146, PETRI_TRANSITIONS=178} [2023-08-26 09:48:23,512 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 111 predicate places. [2023-08-26 09:48:23,513 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 178 transitions, 2578 flow [2023-08-26 09:48:23,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.0) internal successors, (960), 12 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:23,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:23,513 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:23,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:23,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 09:48:23,718 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:23,719 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:23,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1809665566, now seen corresponding path program 9 times [2023-08-26 09:48:23,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:23,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280055618] [2023-08-26 09:48:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:23,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:23,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:23,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280055618] [2023-08-26 09:48:23,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280055618] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:23,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423789654] [2023-08-26 09:48:23,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:48:23,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:23,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:23,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:23,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 09:48:23,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:48:23,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:23,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:23,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:23,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:24,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423789654] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:24,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:24,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-26 09:48:24,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207141006] [2023-08-26 09:48:24,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:24,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:48:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:24,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:48:24,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:48:24,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:24,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 178 transitions, 2578 flow. Second operand has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:24,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:24,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:24,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:24,524 INFO L124 PetriNetUnfolderBase]: 705/1794 cut-off events. [2023-08-26 09:48:24,525 INFO L125 PetriNetUnfolderBase]: For 20588/20832 co-relation queries the response was YES. [2023-08-26 09:48:24,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9321 conditions, 1794 events. 705/1794 cut-off events. For 20588/20832 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12863 event pairs, 273 based on Foata normal form. 130/1857 useless extension candidates. Maximal degree in co-relation 9270. Up to 911 conditions per place. [2023-08-26 09:48:24,553 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 175 selfloop transitions, 57 changer transitions 1/239 dead transitions. [2023-08-26 09:48:24,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 239 transitions, 3717 flow [2023-08-26 09:48:24,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-26 09:48:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-26 09:48:24,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1496 transitions. [2023-08-26 09:48:24,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41144114411441146 [2023-08-26 09:48:24,558 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1496 transitions. [2023-08-26 09:48:24,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1496 transitions. [2023-08-26 09:48:24,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:24,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1496 transitions. [2023-08-26 09:48:24,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 83.11111111111111) internal successors, (1496), 18 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:24,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:24,564 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 202.0) internal successors, (3838), 19 states have internal predecessors, (3838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:24,564 INFO L175 Difference]: Start difference. First operand has 146 places, 178 transitions, 2578 flow. Second operand 18 states and 1496 transitions. [2023-08-26 09:48:24,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 239 transitions, 3717 flow [2023-08-26 09:48:24,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 239 transitions, 3475 flow, removed 23 selfloop flow, removed 11 redundant places. [2023-08-26 09:48:24,625 INFO L231 Difference]: Finished difference. Result has 164 places, 206 transitions, 3060 flow [2023-08-26 09:48:24,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3060, PETRI_PLACES=164, PETRI_TRANSITIONS=206} [2023-08-26 09:48:24,626 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 129 predicate places. [2023-08-26 09:48:24,627 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 206 transitions, 3060 flow [2023-08-26 09:48:24,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:24,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:24,627 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:24,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:24,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-26 09:48:24,832 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:24,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:24,832 INFO L85 PathProgramCache]: Analyzing trace with hash -2047205090, now seen corresponding path program 10 times [2023-08-26 09:48:24,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:24,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825741958] [2023-08-26 09:48:24,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:24,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:24,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:24,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825741958] [2023-08-26 09:48:24,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825741958] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:24,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324836606] [2023-08-26 09:48:24,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:48:24,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:24,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:24,922 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:24,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 09:48:24,998 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:48:24,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:24,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-26 09:48:25,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:25,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:25,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324836606] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:25,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:25,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-26 09:48:25,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404207417] [2023-08-26 09:48:25,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:25,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-26 09:48:25,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:25,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-26 09:48:25,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-26 09:48:25,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:25,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 206 transitions, 3060 flow. Second operand has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:25,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:25,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:25,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:25,536 INFO L124 PetriNetUnfolderBase]: 712/1827 cut-off events. [2023-08-26 09:48:25,536 INFO L125 PetriNetUnfolderBase]: For 24030/24332 co-relation queries the response was YES. [2023-08-26 09:48:25,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9697 conditions, 1827 events. 712/1827 cut-off events. For 24030/24332 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 13256 event pairs, 269 based on Foata normal form. 100/1861 useless extension candidates. Maximal degree in co-relation 9636. Up to 911 conditions per place. [2023-08-26 09:48:25,555 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 165 selfloop transitions, 54 changer transitions 1/226 dead transitions. [2023-08-26 09:48:25,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 226 transitions, 3735 flow [2023-08-26 09:48:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-26 09:48:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-26 09:48:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 911 transitions. [2023-08-26 09:48:25,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40999099909991 [2023-08-26 09:48:25,557 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 911 transitions. [2023-08-26 09:48:25,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 911 transitions. [2023-08-26 09:48:25,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:25,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 911 transitions. [2023-08-26 09:48:25,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.81818181818181) internal successors, (911), 11 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:25,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 202.0) internal successors, (2424), 12 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:25,561 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 202.0) internal successors, (2424), 12 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:25,561 INFO L175 Difference]: Start difference. First operand has 164 places, 206 transitions, 3060 flow. Second operand 11 states and 911 transitions. [2023-08-26 09:48:25,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 226 transitions, 3735 flow [2023-08-26 09:48:25,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 226 transitions, 3371 flow, removed 165 selfloop flow, removed 5 redundant places. [2023-08-26 09:48:25,644 INFO L231 Difference]: Finished difference. Result has 170 places, 209 transitions, 2868 flow [2023-08-26 09:48:25,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2696, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2868, PETRI_PLACES=170, PETRI_TRANSITIONS=209} [2023-08-26 09:48:25,644 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 135 predicate places. [2023-08-26 09:48:25,644 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 209 transitions, 2868 flow [2023-08-26 09:48:25,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 80.0) internal successors, (1040), 13 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:25,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:25,645 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:25,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:25,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:25,850 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:25,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:25,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1608763259, now seen corresponding path program 11 times [2023-08-26 09:48:25,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:25,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789169274] [2023-08-26 09:48:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:25,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:25,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789169274] [2023-08-26 09:48:25,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789169274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:25,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495953870] [2023-08-26 09:48:25,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:48:25,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:25,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:25,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:25,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 09:48:26,058 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:48:26,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:26,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-26 09:48:26,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:26,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:26,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:26,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495953870] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:26,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:26,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-26 09:48:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870361967] [2023-08-26 09:48:26,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:26,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 09:48:26,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:26,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 09:48:26,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 09:48:26,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-26 09:48:26,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 209 transitions, 2868 flow. Second operand has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:26,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:26,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-26 09:48:26,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:26,576 INFO L124 PetriNetUnfolderBase]: 1029/2553 cut-off events. [2023-08-26 09:48:26,576 INFO L125 PetriNetUnfolderBase]: For 33592/34008 co-relation queries the response was YES. [2023-08-26 09:48:26,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13440 conditions, 2553 events. 1029/2553 cut-off events. For 33592/34008 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 19921 event pairs, 212 based on Foata normal form. 125/2565 useless extension candidates. Maximal degree in co-relation 13378. Up to 860 conditions per place. [2023-08-26 09:48:26,602 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 212 selfloop transitions, 81 changer transitions 37/343 dead transitions. [2023-08-26 09:48:26,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 343 transitions, 5217 flow [2023-08-26 09:48:26,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:48:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:48:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 496 transitions. [2023-08-26 09:48:26,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4910891089108911 [2023-08-26 09:48:26,603 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 496 transitions. [2023-08-26 09:48:26,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 496 transitions. [2023-08-26 09:48:26,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:26,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 496 transitions. [2023-08-26 09:48:26,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:26,606 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:26,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 202.0) internal successors, (1212), 6 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:26,606 INFO L175 Difference]: Start difference. First operand has 170 places, 209 transitions, 2868 flow. Second operand 5 states and 496 transitions. [2023-08-26 09:48:26,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 343 transitions, 5217 flow [2023-08-26 09:48:26,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 343 transitions, 5118 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-26 09:48:26,699 INFO L231 Difference]: Finished difference. Result has 173 places, 257 transitions, 3826 flow [2023-08-26 09:48:26,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=2800, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3826, PETRI_PLACES=173, PETRI_TRANSITIONS=257} [2023-08-26 09:48:26,700 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 138 predicate places. [2023-08-26 09:48:26,700 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 257 transitions, 3826 flow [2023-08-26 09:48:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.0) internal successors, (465), 5 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:26,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:26,700 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:26,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:26,900 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,SelfDestructingSolverStorable19 [2023-08-26 09:48:26,901 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:26,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash 548121127, now seen corresponding path program 12 times [2023-08-26 09:48:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:26,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766636395] [2023-08-26 09:48:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:27,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766636395] [2023-08-26 09:48:27,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766636395] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:27,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606700161] [2023-08-26 09:48:27,029 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:48:27,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:27,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:27,038 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:27,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-26 09:48:27,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:48:27,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:27,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:27,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:27,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:27,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606700161] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:27,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:27,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-26 09:48:27,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277638662] [2023-08-26 09:48:27,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:27,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:48:27,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:27,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:48:27,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:48:27,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:27,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 257 transitions, 3826 flow. Second operand has 20 states, 20 states have (on average 79.75) internal successors, (1595), 20 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:27,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:27,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:27,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:28,304 INFO L124 PetriNetUnfolderBase]: 1458/3699 cut-off events. [2023-08-26 09:48:28,305 INFO L125 PetriNetUnfolderBase]: For 65459/66336 co-relation queries the response was YES. [2023-08-26 09:48:28,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20651 conditions, 3699 events. 1458/3699 cut-off events. For 65459/66336 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 30662 event pairs, 322 based on Foata normal form. 575/4143 useless extension candidates. Maximal degree in co-relation 20586. Up to 832 conditions per place. [2023-08-26 09:48:28,348 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 160 selfloop transitions, 276 changer transitions 7/449 dead transitions. [2023-08-26 09:48:28,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 449 transitions, 7467 flow [2023-08-26 09:48:28,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-26 09:48:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-26 09:48:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2977 transitions. [2023-08-26 09:48:28,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40937843784378436 [2023-08-26 09:48:28,353 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2977 transitions. [2023-08-26 09:48:28,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2977 transitions. [2023-08-26 09:48:28,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:28,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2977 transitions. [2023-08-26 09:48:28,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 82.69444444444444) internal successors, (2977), 36 states have internal predecessors, (2977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:28,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 202.0) internal successors, (7474), 37 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:28,365 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 202.0) internal successors, (7474), 37 states have internal predecessors, (7474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:28,365 INFO L175 Difference]: Start difference. First operand has 173 places, 257 transitions, 3826 flow. Second operand 36 states and 2977 transitions. [2023-08-26 09:48:28,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 449 transitions, 7467 flow [2023-08-26 09:48:28,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 449 transitions, 7321 flow, removed 73 selfloop flow, removed 0 redundant places. [2023-08-26 09:48:28,555 INFO L231 Difference]: Finished difference. Result has 224 places, 384 transitions, 7166 flow [2023-08-26 09:48:28,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=3738, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7166, PETRI_PLACES=224, PETRI_TRANSITIONS=384} [2023-08-26 09:48:28,556 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 189 predicate places. [2023-08-26 09:48:28,556 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 384 transitions, 7166 flow [2023-08-26 09:48:28,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.75) internal successors, (1595), 20 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:28,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:28,557 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:28,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:28,768 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:28,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:28,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1597656913, now seen corresponding path program 13 times [2023-08-26 09:48:28,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:28,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206750394] [2023-08-26 09:48:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:28,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:28,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206750394] [2023-08-26 09:48:28,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206750394] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:28,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439890923] [2023-08-26 09:48:28,859 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:48:28,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:28,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:28,861 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:28,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-26 09:48:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:28,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:28,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:29,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:29,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:29,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439890923] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:29,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:29,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-26 09:48:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580439321] [2023-08-26 09:48:29,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:29,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:48:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:48:29,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:48:29,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:29,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 384 transitions, 7166 flow. Second operand has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:29,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:29,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:29,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:30,025 INFO L124 PetriNetUnfolderBase]: 1575/3961 cut-off events. [2023-08-26 09:48:30,025 INFO L125 PetriNetUnfolderBase]: For 82907/83875 co-relation queries the response was YES. [2023-08-26 09:48:30,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24168 conditions, 3961 events. 1575/3961 cut-off events. For 82907/83875 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 33454 event pairs, 478 based on Foata normal form. 462/4253 useless extension candidates. Maximal degree in co-relation 24086. Up to 1257 conditions per place. [2023-08-26 09:48:30,065 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 197 selfloop transitions, 246 changer transitions 0/449 dead transitions. [2023-08-26 09:48:30,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 449 transitions, 9087 flow [2023-08-26 09:48:30,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 09:48:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 09:48:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1728 transitions. [2023-08-26 09:48:30,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4073550212164074 [2023-08-26 09:48:30,068 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1728 transitions. [2023-08-26 09:48:30,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1728 transitions. [2023-08-26 09:48:30,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:30,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1728 transitions. [2023-08-26 09:48:30,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.28571428571429) internal successors, (1728), 21 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:30,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:30,076 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:30,076 INFO L175 Difference]: Start difference. First operand has 224 places, 384 transitions, 7166 flow. Second operand 21 states and 1728 transitions. [2023-08-26 09:48:30,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 449 transitions, 9087 flow [2023-08-26 09:48:30,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 449 transitions, 7797 flow, removed 617 selfloop flow, removed 9 redundant places. [2023-08-26 09:48:30,484 INFO L231 Difference]: Finished difference. Result has 237 places, 420 transitions, 7310 flow [2023-08-26 09:48:30,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=6170, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7310, PETRI_PLACES=237, PETRI_TRANSITIONS=420} [2023-08-26 09:48:30,484 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 202 predicate places. [2023-08-26 09:48:30,484 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 420 transitions, 7310 flow [2023-08-26 09:48:30,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:30,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:30,485 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:30,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:30,691 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:30,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash -588553881, now seen corresponding path program 14 times [2023-08-26 09:48:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:30,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132134340] [2023-08-26 09:48:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:30,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:30,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132134340] [2023-08-26 09:48:30,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132134340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:30,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223034795] [2023-08-26 09:48:30,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:48:30,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:30,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:30,789 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:30,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-26 09:48:30,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:48:30,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:30,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:30,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:31,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:31,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223034795] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:31,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:31,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-26 09:48:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806877921] [2023-08-26 09:48:31,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:31,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:48:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:31,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:48:31,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:48:31,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:31,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 420 transitions, 7310 flow. Second operand has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:31,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:31,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:31,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:32,172 INFO L124 PetriNetUnfolderBase]: 1916/4734 cut-off events. [2023-08-26 09:48:32,172 INFO L125 PetriNetUnfolderBase]: For 85099/86031 co-relation queries the response was YES. [2023-08-26 09:48:32,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27502 conditions, 4734 events. 1916/4734 cut-off events. For 85099/86031 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 40275 event pairs, 412 based on Foata normal form. 652/5190 useless extension candidates. Maximal degree in co-relation 27418. Up to 1066 conditions per place. [2023-08-26 09:48:32,214 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 148 selfloop transitions, 393 changer transitions 4/551 dead transitions. [2023-08-26 09:48:32,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 551 transitions, 10599 flow [2023-08-26 09:48:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 09:48:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 09:48:32,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1986 transitions. [2023-08-26 09:48:32,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40965346534653463 [2023-08-26 09:48:32,225 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1986 transitions. [2023-08-26 09:48:32,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1986 transitions. [2023-08-26 09:48:32,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:32,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1986 transitions. [2023-08-26 09:48:32,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 82.75) internal successors, (1986), 24 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:32,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:32,238 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:32,238 INFO L175 Difference]: Start difference. First operand has 237 places, 420 transitions, 7310 flow. Second operand 24 states and 1986 transitions. [2023-08-26 09:48:32,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 551 transitions, 10599 flow [2023-08-26 09:48:32,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 551 transitions, 10312 flow, removed 39 selfloop flow, removed 10 redundant places. [2023-08-26 09:48:32,689 INFO L231 Difference]: Finished difference. Result has 253 places, 506 transitions, 9938 flow [2023-08-26 09:48:32,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=7060, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=319, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9938, PETRI_PLACES=253, PETRI_TRANSITIONS=506} [2023-08-26 09:48:32,690 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 218 predicate places. [2023-08-26 09:48:32,690 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 506 transitions, 9938 flow [2023-08-26 09:48:32,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:32,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:32,690 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:32,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:32,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-26 09:48:32,891 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:32,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:32,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1261925113, now seen corresponding path program 15 times [2023-08-26 09:48:32,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:32,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299882986] [2023-08-26 09:48:32,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:32,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:32,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:32,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299882986] [2023-08-26 09:48:32,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299882986] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:32,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489873924] [2023-08-26 09:48:32,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:48:32,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:32,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:32,997 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:33,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-26 09:48:33,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-26 09:48:33,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:33,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:33,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:33,211 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:33,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:33,268 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:48:33,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489873924] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:33,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:33,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-26 09:48:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941425391] [2023-08-26 09:48:33,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:33,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:48:33,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:33,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:48:33,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:48:33,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:33,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 506 transitions, 9938 flow. Second operand has 16 states, 16 states have (on average 79.8125) internal successors, (1277), 16 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:33,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:33,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:33,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:34,464 INFO L124 PetriNetUnfolderBase]: 1899/4775 cut-off events. [2023-08-26 09:48:34,464 INFO L125 PetriNetUnfolderBase]: For 93589/94633 co-relation queries the response was YES. [2023-08-26 09:48:34,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28556 conditions, 4775 events. 1899/4775 cut-off events. For 93589/94633 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 41458 event pairs, 576 based on Foata normal form. 495/5070 useless extension candidates. Maximal degree in co-relation 28469. Up to 1539 conditions per place. [2023-08-26 09:48:34,510 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 209 selfloop transitions, 326 changer transitions 0/541 dead transitions. [2023-08-26 09:48:34,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 541 transitions, 11255 flow [2023-08-26 09:48:34,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 09:48:34,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 09:48:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1647 transitions. [2023-08-26 09:48:34,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40767326732673265 [2023-08-26 09:48:34,515 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1647 transitions. [2023-08-26 09:48:34,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1647 transitions. [2023-08-26 09:48:34,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:34,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1647 transitions. [2023-08-26 09:48:34,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 82.35) internal successors, (1647), 20 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:34,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:34,522 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:34,522 INFO L175 Difference]: Start difference. First operand has 253 places, 506 transitions, 9938 flow. Second operand 20 states and 1647 transitions. [2023-08-26 09:48:34,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 541 transitions, 11255 flow [2023-08-26 09:48:34,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 541 transitions, 10352 flow, removed 362 selfloop flow, removed 16 redundant places. [2023-08-26 09:48:34,964 INFO L231 Difference]: Finished difference. Result has 258 places, 508 transitions, 9763 flow [2023-08-26 09:48:34,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=9040, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9763, PETRI_PLACES=258, PETRI_TRANSITIONS=508} [2023-08-26 09:48:34,965 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 223 predicate places. [2023-08-26 09:48:34,965 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 508 transitions, 9763 flow [2023-08-26 09:48:34,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.8125) internal successors, (1277), 16 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:34,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:34,966 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:34,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:35,170 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:35,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1064241971, now seen corresponding path program 16 times [2023-08-26 09:48:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:35,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046501614] [2023-08-26 09:48:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:35,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046501614] [2023-08-26 09:48:35,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046501614] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:35,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380876874] [2023-08-26 09:48:35,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:48:35,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:35,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:35,257 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:35,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-26 09:48:35,351 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:48:35,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:35,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:35,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:35,452 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:35,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:48:35,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380876874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:35,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:35,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 16 [2023-08-26 09:48:35,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207144143] [2023-08-26 09:48:35,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:35,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:48:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:35,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:48:35,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:48:35,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:35,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 508 transitions, 9763 flow. Second operand has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:35,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:35,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:35,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:36,843 INFO L124 PetriNetUnfolderBase]: 2059/5242 cut-off events. [2023-08-26 09:48:36,843 INFO L125 PetriNetUnfolderBase]: For 89045/89915 co-relation queries the response was YES. [2023-08-26 09:48:36,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30389 conditions, 5242 events. 2059/5242 cut-off events. For 89045/89915 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 46287 event pairs, 496 based on Foata normal form. 331/5359 useless extension candidates. Maximal degree in co-relation 30306. Up to 1179 conditions per place. [2023-08-26 09:48:36,887 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 314 selfloop transitions, 286 changer transitions 7/613 dead transitions. [2023-08-26 09:48:36,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 613 transitions, 12352 flow [2023-08-26 09:48:36,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-26 09:48:36,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-26 09:48:36,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1654 transitions. [2023-08-26 09:48:36,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094059405940594 [2023-08-26 09:48:36,890 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1654 transitions. [2023-08-26 09:48:36,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1654 transitions. [2023-08-26 09:48:36,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:36,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1654 transitions. [2023-08-26 09:48:36,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 82.7) internal successors, (1654), 20 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:36,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:36,896 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 202.0) internal successors, (4242), 21 states have internal predecessors, (4242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:36,896 INFO L175 Difference]: Start difference. First operand has 258 places, 508 transitions, 9763 flow. Second operand 20 states and 1654 transitions. [2023-08-26 09:48:36,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 613 transitions, 12352 flow [2023-08-26 09:48:37,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 613 transitions, 11633 flow, removed 10 selfloop flow, removed 18 redundant places. [2023-08-26 09:48:37,307 INFO L231 Difference]: Finished difference. Result has 268 places, 555 transitions, 10929 flow [2023-08-26 09:48:37,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=9101, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=238, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=10929, PETRI_PLACES=268, PETRI_TRANSITIONS=555} [2023-08-26 09:48:37,308 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 233 predicate places. [2023-08-26 09:48:37,308 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 555 transitions, 10929 flow [2023-08-26 09:48:37,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 80.0625) internal successors, (1281), 16 states have internal predecessors, (1281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:37,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:37,308 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:37,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:37,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:37,513 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:37,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash -19662061, now seen corresponding path program 17 times [2023-08-26 09:48:37,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:37,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694482516] [2023-08-26 09:48:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:37,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:37,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694482516] [2023-08-26 09:48:37,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694482516] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:37,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164828609] [2023-08-26 09:48:37,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:48:37,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:37,605 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:37,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-26 09:48:37,708 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 09:48:37,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:37,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:37,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:37,821 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:37,821 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:37,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:37,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164828609] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:37,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:37,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-26 09:48:37,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936950620] [2023-08-26 09:48:37,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:37,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:48:37,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:37,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:48:37,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:48:37,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:37,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 555 transitions, 10929 flow. Second operand has 18 states, 18 states have (on average 79.77777777777777) internal successors, (1436), 18 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:37,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:37,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:37,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:39,411 INFO L124 PetriNetUnfolderBase]: 2130/5476 cut-off events. [2023-08-26 09:48:39,411 INFO L125 PetriNetUnfolderBase]: For 93844/94613 co-relation queries the response was YES. [2023-08-26 09:48:39,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31981 conditions, 5476 events. 2130/5476 cut-off events. For 93844/94613 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 48860 event pairs, 505 based on Foata normal form. 274/5534 useless extension candidates. Maximal degree in co-relation 31892. Up to 1230 conditions per place. [2023-08-26 09:48:39,463 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 323 selfloop transitions, 319 changer transitions 0/648 dead transitions. [2023-08-26 09:48:39,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 648 transitions, 13014 flow [2023-08-26 09:48:39,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 09:48:39,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 09:48:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2392 transitions. [2023-08-26 09:48:39,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083304882212359 [2023-08-26 09:48:39,466 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2392 transitions. [2023-08-26 09:48:39,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2392 transitions. [2023-08-26 09:48:39,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:39,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2392 transitions. [2023-08-26 09:48:39,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 82.48275862068965) internal successors, (2392), 29 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:39,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:39,475 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:39,475 INFO L175 Difference]: Start difference. First operand has 268 places, 555 transitions, 10929 flow. Second operand 29 states and 2392 transitions. [2023-08-26 09:48:39,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 648 transitions, 13014 flow [2023-08-26 09:48:39,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 648 transitions, 12732 flow, removed 88 selfloop flow, removed 7 redundant places. [2023-08-26 09:48:39,996 INFO L231 Difference]: Finished difference. Result has 293 places, 582 transitions, 11976 flow [2023-08-26 09:48:39,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=10677, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11976, PETRI_PLACES=293, PETRI_TRANSITIONS=582} [2023-08-26 09:48:39,997 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 258 predicate places. [2023-08-26 09:48:39,997 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 582 transitions, 11976 flow [2023-08-26 09:48:39,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 79.77777777777777) internal successors, (1436), 18 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:39,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:39,998 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:40,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:40,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:40,203 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:40,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:40,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1368815591, now seen corresponding path program 18 times [2023-08-26 09:48:40,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:40,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48020233] [2023-08-26 09:48:40,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:40,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:40,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:40,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48020233] [2023-08-26 09:48:40,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48020233] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:40,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491715003] [2023-08-26 09:48:40,292 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:48:40,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:40,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:40,293 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:40,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-26 09:48:40,431 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-26 09:48:40,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:40,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:40,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:40,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:40,616 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:40,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491715003] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:40,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:40,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-08-26 09:48:40,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941596698] [2023-08-26 09:48:40,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:40,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:48:40,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:40,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:48:40,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:48:40,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:40,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 582 transitions, 11976 flow. Second operand has 15 states, 15 states have (on average 80.13333333333334) internal successors, (1202), 15 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:40,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:40,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:40,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:42,308 INFO L124 PetriNetUnfolderBase]: 2573/6574 cut-off events. [2023-08-26 09:48:42,309 INFO L125 PetriNetUnfolderBase]: For 124786/125824 co-relation queries the response was YES. [2023-08-26 09:48:42,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39469 conditions, 6574 events. 2573/6574 cut-off events. For 124786/125824 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 60500 event pairs, 548 based on Foata normal form. 662/6994 useless extension candidates. Maximal degree in co-relation 39375. Up to 1483 conditions per place. [2023-08-26 09:48:42,373 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 196 selfloop transitions, 555 changer transitions 0/757 dead transitions. [2023-08-26 09:48:42,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 757 transitions, 16050 flow [2023-08-26 09:48:42,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 09:48:42,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 09:48:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2146 transitions. [2023-08-26 09:48:42,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4086062452399086 [2023-08-26 09:48:42,376 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2146 transitions. [2023-08-26 09:48:42,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2146 transitions. [2023-08-26 09:48:42,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:42,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2146 transitions. [2023-08-26 09:48:42,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 82.53846153846153) internal successors, (2146), 26 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:42,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:42,383 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 202.0) internal successors, (5454), 27 states have internal predecessors, (5454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:42,383 INFO L175 Difference]: Start difference. First operand has 293 places, 582 transitions, 11976 flow. Second operand 26 states and 2146 transitions. [2023-08-26 09:48:42,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 757 transitions, 16050 flow [2023-08-26 09:48:43,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 757 transitions, 15653 flow, removed 87 selfloop flow, removed 9 redundant places. [2023-08-26 09:48:43,207 INFO L231 Difference]: Finished difference. Result has 317 places, 706 transitions, 15622 flow [2023-08-26 09:48:43,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=11603, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=448, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=15622, PETRI_PLACES=317, PETRI_TRANSITIONS=706} [2023-08-26 09:48:43,208 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 282 predicate places. [2023-08-26 09:48:43,209 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 706 transitions, 15622 flow [2023-08-26 09:48:43,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.13333333333334) internal successors, (1202), 15 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:43,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:43,209 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:43,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-26 09:48:43,413 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,SelfDestructingSolverStorable26 [2023-08-26 09:48:43,414 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:43,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:43,414 INFO L85 PathProgramCache]: Analyzing trace with hash -22953433, now seen corresponding path program 19 times [2023-08-26 09:48:43,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:43,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511107363] [2023-08-26 09:48:43,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:43,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:43,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511107363] [2023-08-26 09:48:43,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511107363] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298716910] [2023-08-26 09:48:43,510 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:48:43,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:43,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:43,511 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:43,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-26 09:48:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:43,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:43,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:43,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:43,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:43,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298716910] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:43,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:43,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-26 09:48:43,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207892865] [2023-08-26 09:48:43,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:43,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-26 09:48:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-26 09:48:43,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-26 09:48:43,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:43,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 706 transitions, 15622 flow. Second operand has 14 states, 14 states have (on average 80.14285714285714) internal successors, (1122), 14 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:43,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:43,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:43,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:45,802 INFO L124 PetriNetUnfolderBase]: 3277/8491 cut-off events. [2023-08-26 09:48:45,802 INFO L125 PetriNetUnfolderBase]: For 186204/187380 co-relation queries the response was YES. [2023-08-26 09:48:45,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55205 conditions, 8491 events. 3277/8491 cut-off events. For 186204/187380 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 81691 event pairs, 654 based on Foata normal form. 624/8857 useless extension candidates. Maximal degree in co-relation 55102. Up to 2235 conditions per place. [2023-08-26 09:48:45,905 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 590 selfloop transitions, 360 changer transitions 10/966 dead transitions. [2023-08-26 09:48:45,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 966 transitions, 23212 flow [2023-08-26 09:48:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:48:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:48:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1091 transitions. [2023-08-26 09:48:45,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41546077684691546 [2023-08-26 09:48:45,907 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1091 transitions. [2023-08-26 09:48:45,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1091 transitions. [2023-08-26 09:48:45,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:45,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1091 transitions. [2023-08-26 09:48:45,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 83.92307692307692) internal successors, (1091), 13 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:45,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 202.0) internal successors, (2828), 14 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:45,910 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 202.0) internal successors, (2828), 14 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:45,910 INFO L175 Difference]: Start difference. First operand has 317 places, 706 transitions, 15622 flow. Second operand 13 states and 1091 transitions. [2023-08-26 09:48:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 966 transitions, 23212 flow [2023-08-26 09:48:47,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 966 transitions, 22813 flow, removed 164 selfloop flow, removed 9 redundant places. [2023-08-26 09:48:47,666 INFO L231 Difference]: Finished difference. Result has 328 places, 883 transitions, 21335 flow [2023-08-26 09:48:47,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=15304, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=21335, PETRI_PLACES=328, PETRI_TRANSITIONS=883} [2023-08-26 09:48:47,667 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 293 predicate places. [2023-08-26 09:48:47,667 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 883 transitions, 21335 flow [2023-08-26 09:48:47,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 80.14285714285714) internal successors, (1122), 14 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:47,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:47,668 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:47,672 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-26 09:48:47,872 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,SelfDestructingSolverStorable27 [2023-08-26 09:48:47,873 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:47,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:47,873 INFO L85 PathProgramCache]: Analyzing trace with hash -361487629, now seen corresponding path program 20 times [2023-08-26 09:48:47,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:47,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236361715] [2023-08-26 09:48:47,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:47,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:47,967 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:47,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236361715] [2023-08-26 09:48:47,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236361715] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:47,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183689890] [2023-08-26 09:48:47,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:48:47,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:47,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:47,968 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:47,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-26 09:48:48,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:48:48,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:48,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:48,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:48,161 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:48,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183689890] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:48,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:48,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-26 09:48:48,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453465236] [2023-08-26 09:48:48,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:48,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-26 09:48:48,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:48,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-26 09:48:48,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-26 09:48:48,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:48,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 883 transitions, 21335 flow. Second operand has 16 states, 16 states have (on average 79.9375) internal successors, (1279), 16 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:48,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:48,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:48,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:51,024 INFO L124 PetriNetUnfolderBase]: 3741/9729 cut-off events. [2023-08-26 09:48:51,024 INFO L125 PetriNetUnfolderBase]: For 239131/240203 co-relation queries the response was YES. [2023-08-26 09:48:51,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66323 conditions, 9729 events. 3741/9729 cut-off events. For 239131/240203 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 96693 event pairs, 977 based on Foata normal form. 388/9795 useless extension candidates. Maximal degree in co-relation 66211. Up to 2340 conditions per place. [2023-08-26 09:48:51,190 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 582 selfloop transitions, 486 changer transitions 1/1075 dead transitions. [2023-08-26 09:48:51,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1075 transitions, 27460 flow [2023-08-26 09:48:51,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-26 09:48:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-26 09:48:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1575 transitions. [2023-08-26 09:48:51,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41036998436685773 [2023-08-26 09:48:51,193 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1575 transitions. [2023-08-26 09:48:51,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1575 transitions. [2023-08-26 09:48:51,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:51,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1575 transitions. [2023-08-26 09:48:51,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 82.89473684210526) internal successors, (1575), 19 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:51,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 202.0) internal successors, (4040), 20 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:51,197 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 202.0) internal successors, (4040), 20 states have internal predecessors, (4040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:51,197 INFO L175 Difference]: Start difference. First operand has 328 places, 883 transitions, 21335 flow. Second operand 19 states and 1575 transitions. [2023-08-26 09:48:51,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1075 transitions, 27460 flow [2023-08-26 09:48:54,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1075 transitions, 27319 flow, removed 61 selfloop flow, removed 2 redundant places. [2023-08-26 09:48:54,044 INFO L231 Difference]: Finished difference. Result has 352 places, 1004 transitions, 26139 flow [2023-08-26 09:48:54,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=21187, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=882, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=363, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=26139, PETRI_PLACES=352, PETRI_TRANSITIONS=1004} [2023-08-26 09:48:54,045 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 317 predicate places. [2023-08-26 09:48:54,045 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 1004 transitions, 26139 flow [2023-08-26 09:48:54,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.9375) internal successors, (1279), 16 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:54,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:48:54,045 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:48:54,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-26 09:48:54,249 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,SelfDestructingSolverStorable28 [2023-08-26 09:48:54,249 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:48:54,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:48:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash -705600221, now seen corresponding path program 21 times [2023-08-26 09:48:54,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:48:54,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227477361] [2023-08-26 09:48:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:48:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:48:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:48:54,330 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:54,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:48:54,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227477361] [2023-08-26 09:48:54,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227477361] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:48:54,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853741125] [2023-08-26 09:48:54,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:48:54,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:48:54,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:48:54,337 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:48:54,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-26 09:48:54,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-26 09:48:54,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:48:54,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:48:54,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:48:54,545 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:54,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:48:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:48:54,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853741125] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:48:54,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:48:54,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-26 09:48:54,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499529024] [2023-08-26 09:48:54,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:48:54,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:48:54,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:48:54,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:48:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:48:54,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:48:54,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 1004 transitions, 26139 flow. Second operand has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:54,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:48:54,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:48:54,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:48:57,815 INFO L124 PetriNetUnfolderBase]: 3990/10119 cut-off events. [2023-08-26 09:48:57,815 INFO L125 PetriNetUnfolderBase]: For 293529/294666 co-relation queries the response was YES. [2023-08-26 09:48:57,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73557 conditions, 10119 events. 3990/10119 cut-off events. For 293529/294666 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 99718 event pairs, 868 based on Foata normal form. 784/10512 useless extension candidates. Maximal degree in co-relation 73437. Up to 2128 conditions per place. [2023-08-26 09:48:57,930 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 245 selfloop transitions, 887 changer transitions 1/1139 dead transitions. [2023-08-26 09:48:57,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 1139 transitions, 30814 flow [2023-08-26 09:48:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-26 09:48:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-26 09:48:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1990 transitions. [2023-08-26 09:48:57,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104785478547855 [2023-08-26 09:48:57,933 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1990 transitions. [2023-08-26 09:48:57,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1990 transitions. [2023-08-26 09:48:57,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:48:57,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1990 transitions. [2023-08-26 09:48:57,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 82.91666666666667) internal successors, (1990), 24 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:57,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:57,946 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 202.0) internal successors, (5050), 25 states have internal predecessors, (5050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:48:57,947 INFO L175 Difference]: Start difference. First operand has 352 places, 1004 transitions, 26139 flow. Second operand 24 states and 1990 transitions. [2023-08-26 09:48:57,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 1139 transitions, 30814 flow [2023-08-26 09:49:00,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 1139 transitions, 30298 flow, removed 84 selfloop flow, removed 7 redundant places. [2023-08-26 09:49:00,635 INFO L231 Difference]: Finished difference. Result has 373 places, 1086 transitions, 30090 flow [2023-08-26 09:49:00,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=25667, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1004, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=815, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=30090, PETRI_PLACES=373, PETRI_TRANSITIONS=1086} [2023-08-26 09:49:00,636 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 338 predicate places. [2023-08-26 09:49:00,636 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 1086 transitions, 30090 flow [2023-08-26 09:49:00,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:00,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:49:00,637 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:49:00,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-26 09:49:00,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:00,842 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:49:00,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:49:00,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1144878773, now seen corresponding path program 22 times [2023-08-26 09:49:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:49:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271258553] [2023-08-26 09:49:00,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:49:00,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:49:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:00,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:49:00,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271258553] [2023-08-26 09:49:00,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271258553] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:49:00,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706486368] [2023-08-26 09:49:00,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:49:00,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:00,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:49:00,922 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:49:00,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-26 09:49:01,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:49:01,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:49:01,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:49:01,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:49:01,098 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:01,099 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:49:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:01,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706486368] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:49:01,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:49:01,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-26 09:49:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356489184] [2023-08-26 09:49:01,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:49:01,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:49:01,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:49:01,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:49:01,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:49:01,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:49:01,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 1086 transitions, 30090 flow. Second operand has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:01,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:49:01,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:49:01,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:49:04,580 INFO L124 PetriNetUnfolderBase]: 3972/10348 cut-off events. [2023-08-26 09:49:04,580 INFO L125 PetriNetUnfolderBase]: For 342260/343472 co-relation queries the response was YES. [2023-08-26 09:49:04,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76656 conditions, 10348 events. 3972/10348 cut-off events. For 342260/343472 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 105039 event pairs, 1320 based on Foata normal form. 656/10674 useless extension candidates. Maximal degree in co-relation 76531. Up to 3811 conditions per place. [2023-08-26 09:49:04,713 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 419 selfloop transitions, 705 changer transitions 3/1133 dead transitions. [2023-08-26 09:49:04,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1133 transitions, 32754 flow [2023-08-26 09:49:04,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 09:49:04,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 09:49:04,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1731 transitions. [2023-08-26 09:49:04,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40806223479490805 [2023-08-26 09:49:04,717 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1731 transitions. [2023-08-26 09:49:04,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1731 transitions. [2023-08-26 09:49:04,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:49:04,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1731 transitions. [2023-08-26 09:49:04,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.42857142857143) internal successors, (1731), 21 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:04,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:04,722 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:04,722 INFO L175 Difference]: Start difference. First operand has 373 places, 1086 transitions, 30090 flow. Second operand 21 states and 1731 transitions. [2023-08-26 09:49:04,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1133 transitions, 32754 flow [2023-08-26 09:49:08,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 1133 transitions, 30965 flow, removed 395 selfloop flow, removed 21 redundant places. [2023-08-26 09:49:08,043 INFO L231 Difference]: Finished difference. Result has 374 places, 1086 transitions, 29765 flow [2023-08-26 09:49:08,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=28305, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=704, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=29765, PETRI_PLACES=374, PETRI_TRANSITIONS=1086} [2023-08-26 09:49:08,044 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 339 predicate places. [2023-08-26 09:49:08,045 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 1086 transitions, 29765 flow [2023-08-26 09:49:08,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 79.8) internal successors, (1197), 15 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:08,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:49:08,045 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:49:08,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-26 09:49:08,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:08,249 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:49:08,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:49:08,249 INFO L85 PathProgramCache]: Analyzing trace with hash -808380091, now seen corresponding path program 23 times [2023-08-26 09:49:08,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:49:08,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634463811] [2023-08-26 09:49:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:49:08,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:49:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:08,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:49:08,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634463811] [2023-08-26 09:49:08,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634463811] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:49:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750897640] [2023-08-26 09:49:08,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:49:08,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:08,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:49:08,333 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:49:08,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-26 09:49:08,447 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-26 09:49:08,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:49:08,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:49:08,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:49:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:08,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:49:08,614 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:08,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750897640] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:49:08,614 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:49:08,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-26 09:49:08,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116538494] [2023-08-26 09:49:08,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:49:08,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-26 09:49:08,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:49:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-26 09:49:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-26 09:49:08,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:49:08,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 1086 transitions, 29765 flow. Second operand has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:08,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:49:08,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:49:08,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:49:11,963 INFO L124 PetriNetUnfolderBase]: 4156/10806 cut-off events. [2023-08-26 09:49:11,963 INFO L125 PetriNetUnfolderBase]: For 341309/342405 co-relation queries the response was YES. [2023-08-26 09:49:12,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79323 conditions, 10806 events. 4156/10806 cut-off events. For 341309/342405 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 109438 event pairs, 947 based on Foata normal form. 454/10888 useless extension candidates. Maximal degree in co-relation 79205. Up to 2323 conditions per place. [2023-08-26 09:49:12,206 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 491 selfloop transitions, 699 changer transitions 1/1197 dead transitions. [2023-08-26 09:49:12,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 1197 transitions, 33818 flow [2023-08-26 09:49:12,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-26 09:49:12,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-26 09:49:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1740 transitions. [2023-08-26 09:49:12,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4101838755304102 [2023-08-26 09:49:12,209 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1740 transitions. [2023-08-26 09:49:12,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1740 transitions. [2023-08-26 09:49:12,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:49:12,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1740 transitions. [2023-08-26 09:49:12,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 82.85714285714286) internal successors, (1740), 21 states have internal predecessors, (1740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:12,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:12,216 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 202.0) internal successors, (4444), 22 states have internal predecessors, (4444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:12,216 INFO L175 Difference]: Start difference. First operand has 374 places, 1086 transitions, 29765 flow. Second operand 21 states and 1740 transitions. [2023-08-26 09:49:12,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 1197 transitions, 33818 flow [2023-08-26 09:49:15,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 1197 transitions, 32392 flow, removed 3 selfloop flow, removed 16 redundant places. [2023-08-26 09:49:15,229 INFO L231 Difference]: Finished difference. Result has 382 places, 1136 transitions, 31650 flow [2023-08-26 09:49:15,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=28385, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1085, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=647, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=31650, PETRI_PLACES=382, PETRI_TRANSITIONS=1136} [2023-08-26 09:49:15,231 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 347 predicate places. [2023-08-26 09:49:15,232 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 1136 transitions, 31650 flow [2023-08-26 09:49:15,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 80.06666666666666) internal successors, (1201), 15 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:15,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:49:15,233 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:49:15,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-26 09:49:15,440 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,SelfDestructingSolverStorable31 [2023-08-26 09:49:15,440 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:49:15,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:49:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1696315283, now seen corresponding path program 24 times [2023-08-26 09:49:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:49:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782674489] [2023-08-26 09:49:15,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:49:15,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:49:15,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:15,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:15,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:49:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782674489] [2023-08-26 09:49:15,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782674489] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:49:15,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350801901] [2023-08-26 09:49:15,533 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:49:15,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:49:15,537 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:49:15,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-26 09:49:15,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:49:15,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:49:15,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:49:15,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:49:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:15,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:49:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:15,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350801901] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:49:15,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:49:15,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-26 09:49:15,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440331723] [2023-08-26 09:49:15,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:49:15,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:49:15,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:49:15,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:49:15,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:49:15,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:49:15,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 1136 transitions, 31650 flow. Second operand has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:15,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:49:15,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:49:15,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:49:19,385 INFO L124 PetriNetUnfolderBase]: 4272/11178 cut-off events. [2023-08-26 09:49:19,385 INFO L125 PetriNetUnfolderBase]: For 381241/382671 co-relation queries the response was YES. [2023-08-26 09:49:19,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82578 conditions, 11178 events. 4272/11178 cut-off events. For 381241/382671 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 114327 event pairs, 1864 based on Foata normal form. 540/11386 useless extension candidates. Maximal degree in co-relation 82456. Up to 6326 conditions per place. [2023-08-26 09:49:19,640 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1086 selfloop transitions, 149 changer transitions 10/1251 dead transitions. [2023-08-26 09:49:19,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1251 transitions, 36239 flow [2023-08-26 09:49:19,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 09:49:19,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 09:49:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2484 transitions. [2023-08-26 09:49:19,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099009900990099 [2023-08-26 09:49:19,643 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2484 transitions. [2023-08-26 09:49:19,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2484 transitions. [2023-08-26 09:49:19,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:49:19,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2484 transitions. [2023-08-26 09:49:19,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 82.8) internal successors, (2484), 30 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:19,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:19,649 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:19,649 INFO L175 Difference]: Start difference. First operand has 382 places, 1136 transitions, 31650 flow. Second operand 30 states and 2484 transitions. [2023-08-26 09:49:19,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1251 transitions, 36239 flow [2023-08-26 09:49:23,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1251 transitions, 35562 flow, removed 90 selfloop flow, removed 11 redundant places. [2023-08-26 09:49:23,185 INFO L231 Difference]: Finished difference. Result has 417 places, 1193 transitions, 33216 flow [2023-08-26 09:49:23,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=31009, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1034, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=33216, PETRI_PLACES=417, PETRI_TRANSITIONS=1193} [2023-08-26 09:49:23,186 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 382 predicate places. [2023-08-26 09:49:23,186 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 1193 transitions, 33216 flow [2023-08-26 09:49:23,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:23,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:49:23,186 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:49:23,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-08-26 09:49:23,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-08-26 09:49:23,387 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:49:23,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:49:23,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1750282451, now seen corresponding path program 25 times [2023-08-26 09:49:23,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:49:23,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952062716] [2023-08-26 09:49:23,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:49:23,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:49:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:23,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:49:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952062716] [2023-08-26 09:49:23,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952062716] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:49:23,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257143965] [2023-08-26 09:49:23,477 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:49:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:23,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:49:23,481 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:49:23,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-26 09:49:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:23,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-26 09:49:23,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:49:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:23,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:49:23,738 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257143965] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:49:23,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:49:23,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-26 09:49:23,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122465281] [2023-08-26 09:49:23,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:49:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-26 09:49:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:49:23,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-26 09:49:23,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-08-26 09:49:23,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:49:23,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 1193 transitions, 33216 flow. Second operand has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:23,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:49:23,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:49:23,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:49:27,543 INFO L124 PetriNetUnfolderBase]: 4308/11262 cut-off events. [2023-08-26 09:49:27,544 INFO L125 PetriNetUnfolderBase]: For 369364/370796 co-relation queries the response was YES. [2023-08-26 09:49:27,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82359 conditions, 11262 events. 4308/11262 cut-off events. For 369364/370796 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 115305 event pairs, 1882 based on Foata normal form. 386/11304 useless extension candidates. Maximal degree in co-relation 82221. Up to 6420 conditions per place. [2023-08-26 09:49:27,686 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1078 selfloop transitions, 144 changer transitions 3/1231 dead transitions. [2023-08-26 09:49:27,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 1231 transitions, 36281 flow [2023-08-26 09:49:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-26 09:49:27,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-26 09:49:27,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1320 transitions. [2023-08-26 09:49:27,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084158415841584 [2023-08-26 09:49:27,688 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1320 transitions. [2023-08-26 09:49:27,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1320 transitions. [2023-08-26 09:49:27,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:49:27,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1320 transitions. [2023-08-26 09:49:27,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 82.5) internal successors, (1320), 16 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:27,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:27,692 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 202.0) internal successors, (3434), 17 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:27,692 INFO L175 Difference]: Start difference. First operand has 417 places, 1193 transitions, 33216 flow. Second operand 16 states and 1320 transitions. [2023-08-26 09:49:27,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 1231 transitions, 36281 flow [2023-08-26 09:49:31,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1231 transitions, 34882 flow, removed 590 selfloop flow, removed 9 redundant places. [2023-08-26 09:49:31,321 INFO L231 Difference]: Finished difference. Result has 424 places, 1207 transitions, 32537 flow [2023-08-26 09:49:31,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=31887, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=32537, PETRI_PLACES=424, PETRI_TRANSITIONS=1207} [2023-08-26 09:49:31,322 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 389 predicate places. [2023-08-26 09:49:31,322 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 1207 transitions, 32537 flow [2023-08-26 09:49:31,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 79.76470588235294) internal successors, (1356), 17 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:31,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:49:31,323 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:49:31,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-26 09:49:31,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:31,523 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:49:31,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:49:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1108316882, now seen corresponding path program 26 times [2023-08-26 09:49:31,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:49:31,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700325939] [2023-08-26 09:49:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:49:31,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:49:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:31,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:49:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700325939] [2023-08-26 09:49:31,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700325939] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:49:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204082762] [2023-08-26 09:49:31,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:49:31,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:31,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:49:31,625 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:49:31,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-26 09:49:31,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:49:31,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:49:31,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-26 09:49:31,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:49:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:31,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:49:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204082762] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:49:31,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:49:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-26 09:49:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542738229] [2023-08-26 09:49:31,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:49:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 09:49:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:49:31,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 09:49:31,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-26 09:49:31,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 202 [2023-08-26 09:49:31,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 1207 transitions, 32537 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:31,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:49:31,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 202 [2023-08-26 09:49:31,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:49:36,684 INFO L124 PetriNetUnfolderBase]: 5754/14615 cut-off events. [2023-08-26 09:49:36,685 INFO L125 PetriNetUnfolderBase]: For 460253/462243 co-relation queries the response was YES. [2023-08-26 09:49:36,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104982 conditions, 14615 events. 5754/14615 cut-off events. For 460253/462243 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 155298 event pairs, 1160 based on Foata normal form. 712/14809 useless extension candidates. Maximal degree in co-relation 104845. Up to 5327 conditions per place. [2023-08-26 09:49:37,018 INFO L140 encePairwiseOnDemand]: 198/202 looper letters, 1132 selfloop transitions, 501 changer transitions 110/1757 dead transitions. [2023-08-26 09:49:37,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 1757 transitions, 49461 flow [2023-08-26 09:49:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 09:49:37,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 09:49:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 597 transitions. [2023-08-26 09:49:37,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49257425742574257 [2023-08-26 09:49:37,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 597 transitions. [2023-08-26 09:49:37,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 597 transitions. [2023-08-26 09:49:37,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:49:37,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 597 transitions. [2023-08-26 09:49:37,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 99.5) internal successors, (597), 6 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:37,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:37,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 202.0) internal successors, (1414), 7 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:37,021 INFO L175 Difference]: Start difference. First operand has 424 places, 1207 transitions, 32537 flow. Second operand 6 states and 597 transitions. [2023-08-26 09:49:37,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 1757 transitions, 49461 flow [2023-08-26 09:49:42,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 1757 transitions, 49121 flow, removed 70 selfloop flow, removed 8 redundant places. [2023-08-26 09:49:42,370 INFO L231 Difference]: Finished difference. Result has 425 places, 1473 transitions, 40067 flow [2023-08-26 09:49:42,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=32330, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=716, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=40067, PETRI_PLACES=425, PETRI_TRANSITIONS=1473} [2023-08-26 09:49:42,371 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 390 predicate places. [2023-08-26 09:49:42,371 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 1473 transitions, 40067 flow [2023-08-26 09:49:42,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:42,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:49:42,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:49:42,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-26 09:49:42,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:42,572 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:49:42,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:49:42,572 INFO L85 PathProgramCache]: Analyzing trace with hash -2067439914, now seen corresponding path program 27 times [2023-08-26 09:49:42,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:49:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006826938] [2023-08-26 09:49:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:49:42,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:49:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:42,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:49:42,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006826938] [2023-08-26 09:49:42,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006826938] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:49:42,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043023608] [2023-08-26 09:49:42,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:49:42,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:42,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:49:42,685 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:49:42,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-26 09:49:42,831 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-26 09:49:42,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:49:42,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:49:42,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:49:42,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:42,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:49:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:49:43,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043023608] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:49:43,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:49:43,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2023-08-26 09:49:43,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586066450] [2023-08-26 09:49:43,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:49:43,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:49:43,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:49:43,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:49:43,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:49:43,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:49:43,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 1473 transitions, 40067 flow. Second operand has 23 states, 23 states have (on average 79.56521739130434) internal successors, (1830), 23 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:43,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:49:43,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:49:43,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:49:49,870 INFO L124 PetriNetUnfolderBase]: 6918/17799 cut-off events. [2023-08-26 09:49:49,870 INFO L125 PetriNetUnfolderBase]: For 637020/640464 co-relation queries the response was YES. [2023-08-26 09:49:50,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132226 conditions, 17799 events. 6918/17799 cut-off events. For 637020/640464 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 194678 event pairs, 1565 based on Foata normal form. 2197/19401 useless extension candidates. Maximal degree in co-relation 132086. Up to 3948 conditions per place. [2023-08-26 09:49:50,148 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 616 selfloop transitions, 1247 changer transitions 31/1900 dead transitions. [2023-08-26 09:49:50,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 1900 transitions, 54741 flow [2023-08-26 09:49:50,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-08-26 09:49:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-08-26 09:49:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3056 transitions. [2023-08-26 09:49:50,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088841316564089 [2023-08-26 09:49:50,152 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3056 transitions. [2023-08-26 09:49:50,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3056 transitions. [2023-08-26 09:49:50,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:49:50,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3056 transitions. [2023-08-26 09:49:50,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 82.5945945945946) internal successors, (3056), 37 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:50,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 202.0) internal successors, (7676), 38 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:50,160 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 202.0) internal successors, (7676), 38 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:50,160 INFO L175 Difference]: Start difference. First operand has 425 places, 1473 transitions, 40067 flow. Second operand 37 states and 3056 transitions. [2023-08-26 09:49:50,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 1900 transitions, 54741 flow [2023-08-26 09:49:58,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1900 transitions, 54273 flow, removed 232 selfloop flow, removed 1 redundant places. [2023-08-26 09:49:58,105 INFO L231 Difference]: Finished difference. Result has 475 places, 1802 transitions, 53644 flow [2023-08-26 09:49:58,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=39699, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=914, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=53644, PETRI_PLACES=475, PETRI_TRANSITIONS=1802} [2023-08-26 09:49:58,107 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 440 predicate places. [2023-08-26 09:49:58,107 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 1802 transitions, 53644 flow [2023-08-26 09:49:58,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 79.56521739130434) internal successors, (1830), 23 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:58,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:49:58,107 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:49:58,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-26 09:49:58,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:58,313 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:49:58,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:49:58,313 INFO L85 PathProgramCache]: Analyzing trace with hash 622071226, now seen corresponding path program 28 times [2023-08-26 09:49:58,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:49:58,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558425900] [2023-08-26 09:49:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:49:58,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:49:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:49:58,422 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:58,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:49:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558425900] [2023-08-26 09:49:58,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558425900] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:49:58,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221207994] [2023-08-26 09:49:58,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:49:58,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:49:58,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:49:58,429 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:49:58,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-26 09:49:58,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:49:58,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:49:58,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:49:58,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:49:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:58,682 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:49:58,757 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:49:58,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221207994] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:49:58,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:49:58,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2023-08-26 09:49:58,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750273655] [2023-08-26 09:49:58,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:49:58,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 09:49:58,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:49:58,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 09:49:58,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2023-08-26 09:49:58,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:49:58,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 1802 transitions, 53644 flow. Second operand has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:49:58,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:49:58,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:49:58,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:50:07,001 INFO L124 PetriNetUnfolderBase]: 7005/18070 cut-off events. [2023-08-26 09:50:07,001 INFO L125 PetriNetUnfolderBase]: For 747830/751654 co-relation queries the response was YES. [2023-08-26 09:50:07,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142121 conditions, 18070 events. 7005/18070 cut-off events. For 747830/751654 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 200234 event pairs, 2291 based on Foata normal form. 1758/19161 useless extension candidates. Maximal degree in co-relation 141966. Up to 6352 conditions per place. [2023-08-26 09:50:07,488 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 882 selfloop transitions, 1008 changer transitions 0/1896 dead transitions. [2023-08-26 09:50:07,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 1896 transitions, 59472 flow [2023-08-26 09:50:07,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-26 09:50:07,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-26 09:50:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2301 transitions. [2023-08-26 09:50:07,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068246110325318 [2023-08-26 09:50:07,490 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2301 transitions. [2023-08-26 09:50:07,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2301 transitions. [2023-08-26 09:50:07,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:50:07,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2301 transitions. [2023-08-26 09:50:07,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.17857142857143) internal successors, (2301), 28 states have internal predecessors, (2301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:07,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 202.0) internal successors, (5858), 29 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:07,497 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 202.0) internal successors, (5858), 29 states have internal predecessors, (5858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:07,497 INFO L175 Difference]: Start difference. First operand has 475 places, 1802 transitions, 53644 flow. Second operand 28 states and 2301 transitions. [2023-08-26 09:50:07,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 1896 transitions, 59472 flow [2023-08-26 09:50:17,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 1896 transitions, 58227 flow, removed 582 selfloop flow, removed 7 redundant places. [2023-08-26 09:50:17,409 INFO L231 Difference]: Finished difference. Result has 497 places, 1855 transitions, 56208 flow [2023-08-26 09:50:17,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=52655, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=955, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=56208, PETRI_PLACES=497, PETRI_TRANSITIONS=1855} [2023-08-26 09:50:17,410 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 462 predicate places. [2023-08-26 09:50:17,410 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1855 transitions, 56208 flow [2023-08-26 09:50:17,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:17,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:50:17,411 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:50:17,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-26 09:50:17,611 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,SelfDestructingSolverStorable36 [2023-08-26 09:50:17,611 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:50:17,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:50:17,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1455201822, now seen corresponding path program 29 times [2023-08-26 09:50:17,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:50:17,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432223212] [2023-08-26 09:50:17,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:50:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:50:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:50:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:50:17,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:50:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432223212] [2023-08-26 09:50:17,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432223212] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:50:17,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739248055] [2023-08-26 09:50:17,730 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:50:17,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:50:17,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:50:17,731 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:50:17,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-26 09:50:17,856 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 09:50:17,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:50:17,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:50:17,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:50:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:50:17,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:50:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:50:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739248055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:50:18,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:50:18,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2023-08-26 09:50:18,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759349443] [2023-08-26 09:50:18,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:50:18,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 09:50:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:50:18,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 09:50:18,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2023-08-26 09:50:18,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:50:18,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1855 transitions, 56208 flow. Second operand has 25 states, 25 states have (on average 79.52) internal successors, (1988), 25 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:18,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:50:18,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:50:18,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:50:28,611 INFO L124 PetriNetUnfolderBase]: 8263/21174 cut-off events. [2023-08-26 09:50:28,611 INFO L125 PetriNetUnfolderBase]: For 907117/911086 co-relation queries the response was YES. [2023-08-26 09:50:28,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171060 conditions, 21174 events. 8263/21174 cut-off events. For 907117/911086 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 235769 event pairs, 1821 based on Foata normal form. 2410/22845 useless extension candidates. Maximal degree in co-relation 170902. Up to 4646 conditions per place. [2023-08-26 09:50:28,970 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 615 selfloop transitions, 1665 changer transitions 11/2297 dead transitions. [2023-08-26 09:50:28,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 2297 transitions, 73733 flow [2023-08-26 09:50:28,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-26 09:50:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-26 09:50:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 4275 transitions. [2023-08-26 09:50:28,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40698781416603197 [2023-08-26 09:50:28,973 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 4275 transitions. [2023-08-26 09:50:28,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 4275 transitions. [2023-08-26 09:50:28,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:50:28,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 4275 transitions. [2023-08-26 09:50:28,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 82.21153846153847) internal successors, (4275), 52 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:28,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 202.0) internal successors, (10706), 53 states have internal predecessors, (10706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:28,986 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 202.0) internal successors, (10706), 53 states have internal predecessors, (10706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:28,986 INFO L175 Difference]: Start difference. First operand has 497 places, 1855 transitions, 56208 flow. Second operand 52 states and 4275 transitions. [2023-08-26 09:50:28,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 2297 transitions, 73733 flow [2023-08-26 09:50:43,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 2297 transitions, 72575 flow, removed 65 selfloop flow, removed 15 redundant places. [2023-08-26 09:50:43,807 INFO L231 Difference]: Finished difference. Result has 537 places, 2199 transitions, 71246 flow [2023-08-26 09:50:43,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=55247, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1855, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=71246, PETRI_PLACES=537, PETRI_TRANSITIONS=2199} [2023-08-26 09:50:43,808 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 502 predicate places. [2023-08-26 09:50:43,809 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 2199 transitions, 71246 flow [2023-08-26 09:50:43,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.52) internal successors, (1988), 25 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:43,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:50:43,809 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:50:43,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-08-26 09:50:44,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-26 09:50:44,010 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:50:44,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:50:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1005348472, now seen corresponding path program 30 times [2023-08-26 09:50:44,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:50:44,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88325451] [2023-08-26 09:50:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:50:44,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:50:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:50:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:50:44,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:50:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88325451] [2023-08-26 09:50:44,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88325451] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:50:44,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906483737] [2023-08-26 09:50:44,118 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:50:44,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:50:44,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:50:44,121 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:50:44,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-26 09:50:44,245 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-26 09:50:44,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:50:44,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:50:44,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:50:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:50:44,373 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:50:44,443 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:50:44,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906483737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:50:44,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:50:44,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 20 [2023-08-26 09:50:44,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000625264] [2023-08-26 09:50:44,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:50:44,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:50:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:50:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:50:44,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:50:44,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:50:44,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 2199 transitions, 71246 flow. Second operand has 20 states, 20 states have (on average 79.9) internal successors, (1598), 20 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:44,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:50:44,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:50:44,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:50:57,398 INFO L124 PetriNetUnfolderBase]: 9554/24013 cut-off events. [2023-08-26 09:50:57,399 INFO L125 PetriNetUnfolderBase]: For 1164651/1168520 co-relation queries the response was YES. [2023-08-26 09:50:57,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203730 conditions, 24013 events. 9554/24013 cut-off events. For 1164651/1168520 co-relation queries the response was YES. Maximal size of possible extension queue 1256. Compared 268673 event pairs, 2079 based on Foata normal form. 2319/25371 useless extension candidates. Maximal degree in co-relation 203568. Up to 5154 conditions per place. [2023-08-26 09:50:58,023 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 527 selfloop transitions, 2084 changer transitions 12/2629 dead transitions. [2023-08-26 09:50:58,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 2629 transitions, 89218 flow [2023-08-26 09:50:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-26 09:50:58,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-26 09:50:58,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2726 transitions. [2023-08-26 09:50:58,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089408940894089 [2023-08-26 09:50:58,026 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2726 transitions. [2023-08-26 09:50:58,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2726 transitions. [2023-08-26 09:50:58,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:50:58,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2726 transitions. [2023-08-26 09:50:58,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 82.60606060606061) internal successors, (2726), 33 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:58,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:58,034 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:50:58,034 INFO L175 Difference]: Start difference. First operand has 537 places, 2199 transitions, 71246 flow. Second operand 33 states and 2726 transitions. [2023-08-26 09:50:58,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 2629 transitions, 89218 flow [2023-08-26 09:51:18,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 2629 transitions, 88052 flow, removed 339 selfloop flow, removed 16 redundant places. [2023-08-26 09:51:18,462 INFO L231 Difference]: Finished difference. Result has 556 places, 2552 transitions, 87144 flow [2023-08-26 09:51:18,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=70301, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=87144, PETRI_PLACES=556, PETRI_TRANSITIONS=2552} [2023-08-26 09:51:18,464 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 521 predicate places. [2023-08-26 09:51:18,464 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 2552 transitions, 87144 flow [2023-08-26 09:51:18,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.9) internal successors, (1598), 20 states have internal predecessors, (1598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:51:18,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:51:18,465 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:51:18,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-08-26 09:51:18,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-26 09:51:18,669 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:51:18,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:51:18,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1439139830, now seen corresponding path program 31 times [2023-08-26 09:51:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:51:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823440150] [2023-08-26 09:51:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:51:18,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:51:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:51:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:51:18,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:51:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823440150] [2023-08-26 09:51:18,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823440150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:51:18,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226596563] [2023-08-26 09:51:18,776 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:51:18,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:51:18,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:51:18,781 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:51:18,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-26 09:51:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:51:18,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:51:18,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:51:19,001 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 20 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:51:19,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:51:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:51:19,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226596563] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:51:19,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:51:19,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 20 [2023-08-26 09:51:19,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364007950] [2023-08-26 09:51:19,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:51:19,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-26 09:51:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:51:19,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-26 09:51:19,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2023-08-26 09:51:19,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:51:19,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 2552 transitions, 87144 flow. Second operand has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:51:19,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:51:19,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:51:19,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:51:33,945 INFO L124 PetriNetUnfolderBase]: 9512/24435 cut-off events. [2023-08-26 09:51:33,945 INFO L125 PetriNetUnfolderBase]: For 1267542/1271051 co-relation queries the response was YES. [2023-08-26 09:51:34,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211666 conditions, 24435 events. 9512/24435 cut-off events. For 1267542/1271051 co-relation queries the response was YES. Maximal size of possible extension queue 1273. Compared 279721 event pairs, 3096 based on Foata normal form. 1767/25339 useless extension candidates. Maximal degree in co-relation 211500. Up to 8840 conditions per place. [2023-08-26 09:51:34,389 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 940 selfloop transitions, 1663 changer transitions 0/2609 dead transitions. [2023-08-26 09:51:34,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 2609 transitions, 92986 flow [2023-08-26 09:51:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:51:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:51:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2221 transitions. [2023-08-26 09:51:34,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40722405573890724 [2023-08-26 09:51:34,391 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2221 transitions. [2023-08-26 09:51:34,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2221 transitions. [2023-08-26 09:51:34,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:51:34,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2221 transitions. [2023-08-26 09:51:34,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 82.25925925925925) internal successors, (2221), 27 states have internal predecessors, (2221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:51:34,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:51:34,396 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:51:34,396 INFO L175 Difference]: Start difference. First operand has 556 places, 2552 transitions, 87144 flow. Second operand 27 states and 2221 transitions. [2023-08-26 09:51:34,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 2609 transitions, 92986 flow [2023-08-26 09:51:54,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 2609 transitions, 90990 flow, removed 745 selfloop flow, removed 17 redundant places. [2023-08-26 09:51:54,315 INFO L231 Difference]: Finished difference. Result has 567 places, 2554 transitions, 88620 flow [2023-08-26 09:51:54,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=85166, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1661, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=891, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=88620, PETRI_PLACES=567, PETRI_TRANSITIONS=2554} [2023-08-26 09:51:54,317 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 532 predicate places. [2023-08-26 09:51:54,317 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 2554 transitions, 88620 flow [2023-08-26 09:51:54,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 79.7) internal successors, (1594), 20 states have internal predecessors, (1594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:51:54,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:51:54,317 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:51:54,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-26 09:51:54,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-26 09:51:54,522 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:51:54,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:51:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash -22696628, now seen corresponding path program 32 times [2023-08-26 09:51:54,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:51:54,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357460274] [2023-08-26 09:51:54,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:51:54,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:51:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:51:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:51:54,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:51:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357460274] [2023-08-26 09:51:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357460274] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:51:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928168145] [2023-08-26 09:51:54,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:51:54,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:51:54,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:51:54,633 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:51:54,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-26 09:51:54,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:51:54,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:51:54,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:51:54,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:51:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:51:54,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:51:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:51:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928168145] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:51:54,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:51:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 21 [2023-08-26 09:51:54,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702295176] [2023-08-26 09:51:54,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:51:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 09:51:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:51:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 09:51:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2023-08-26 09:51:54,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:51:54,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 2554 transitions, 88620 flow. Second operand has 21 states, 21 states have (on average 79.80952380952381) internal successors, (1676), 21 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:51:54,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:51:54,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:51:54,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:52:09,353 INFO L124 PetriNetUnfolderBase]: 10014/25886 cut-off events. [2023-08-26 09:52:09,353 INFO L125 PetriNetUnfolderBase]: For 1338317/1341526 co-relation queries the response was YES. [2023-08-26 09:52:09,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225834 conditions, 25886 events. 10014/25886 cut-off events. For 1338317/1341526 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 298411 event pairs, 2241 based on Foata normal form. 1087/26055 useless extension candidates. Maximal degree in co-relation 225670. Up to 5677 conditions per place. [2023-08-26 09:52:09,800 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1116 selfloop transitions, 1650 changer transitions 33/2805 dead transitions. [2023-08-26 09:52:09,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 2805 transitions, 100708 flow [2023-08-26 09:52:09,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-26 09:52:09,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-26 09:52:09,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2474 transitions. [2023-08-26 09:52:09,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40825082508250826 [2023-08-26 09:52:09,802 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2474 transitions. [2023-08-26 09:52:09,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2474 transitions. [2023-08-26 09:52:09,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:52:09,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2474 transitions. [2023-08-26 09:52:09,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 82.46666666666667) internal successors, (2474), 30 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:09,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:09,809 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 202.0) internal successors, (6262), 31 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:09,809 INFO L175 Difference]: Start difference. First operand has 567 places, 2554 transitions, 88620 flow. Second operand 30 states and 2474 transitions. [2023-08-26 09:52:09,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 2805 transitions, 100708 flow [2023-08-26 09:52:31,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 574 places, 2805 transitions, 97678 flow, removed 33 selfloop flow, removed 22 redundant places. [2023-08-26 09:52:31,212 INFO L231 Difference]: Finished difference. Result has 589 places, 2694 transitions, 95967 flow [2023-08-26 09:52:31,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=85717, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=965, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=95967, PETRI_PLACES=589, PETRI_TRANSITIONS=2694} [2023-08-26 09:52:31,214 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 554 predicate places. [2023-08-26 09:52:31,214 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 2694 transitions, 95967 flow [2023-08-26 09:52:31,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 79.80952380952381) internal successors, (1676), 21 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:31,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:52:31,215 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:52:31,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-26 09:52:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:52:31,415 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:52:31,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:52:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash 521885102, now seen corresponding path program 33 times [2023-08-26 09:52:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:52:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920830006] [2023-08-26 09:52:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:52:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:52:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:52:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:52:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:52:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920830006] [2023-08-26 09:52:31,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920830006] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:52:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279404473] [2023-08-26 09:52:31,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:52:31,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:52:31,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:52:31,525 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:52:31,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-26 09:52:31,769 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-26 09:52:31,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:52:31,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:52:31,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:52:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:52:31,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:52:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:52:31,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279404473] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:52:31,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:52:31,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-26 09:52:31,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184273762] [2023-08-26 09:52:31,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:52:31,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:52:31,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:52:31,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:52:31,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:52:31,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:52:31,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 2694 transitions, 95967 flow. Second operand has 23 states, 23 states have (on average 79.6086956521739) internal successors, (1831), 23 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:31,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:52:31,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:52:31,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:52:47,865 INFO L124 PetriNetUnfolderBase]: 10010/25866 cut-off events. [2023-08-26 09:52:47,865 INFO L125 PetriNetUnfolderBase]: For 1411574/1414396 co-relation queries the response was YES. [2023-08-26 09:52:48,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229815 conditions, 25866 events. 10010/25866 cut-off events. For 1411574/1414396 co-relation queries the response was YES. Maximal size of possible extension queue 1328. Compared 297981 event pairs, 2243 based on Foata normal form. 893/25814 useless extension candidates. Maximal degree in co-relation 229639. Up to 5667 conditions per place. [2023-08-26 09:52:48,320 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1106 selfloop transitions, 1703 changer transitions 0/2815 dead transitions. [2023-08-26 09:52:48,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 2815 transitions, 102879 flow [2023-08-26 09:52:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-26 09:52:48,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-26 09:52:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3622 transitions. [2023-08-26 09:52:48,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075157515751575 [2023-08-26 09:52:48,323 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3622 transitions. [2023-08-26 09:52:48,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3622 transitions. [2023-08-26 09:52:48,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:52:48,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3622 transitions. [2023-08-26 09:52:48,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 82.31818181818181) internal successors, (3622), 44 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:48,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:48,332 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 202.0) internal successors, (9090), 45 states have internal predecessors, (9090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:52:48,332 INFO L175 Difference]: Start difference. First operand has 589 places, 2694 transitions, 95967 flow. Second operand 44 states and 3622 transitions. [2023-08-26 09:52:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 2815 transitions, 102879 flow [2023-08-26 09:53:13,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 2815 transitions, 102056 flow, removed 253 selfloop flow, removed 11 redundant places. [2023-08-26 09:53:13,778 INFO L231 Difference]: Finished difference. Result has 626 places, 2724 transitions, 99837 flow [2023-08-26 09:53:13,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=95206, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1676, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1003, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=99837, PETRI_PLACES=626, PETRI_TRANSITIONS=2724} [2023-08-26 09:53:13,780 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 591 predicate places. [2023-08-26 09:53:13,780 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 2724 transitions, 99837 flow [2023-08-26 09:53:13,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 79.6086956521739) internal successors, (1831), 23 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:53:13,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:53:13,781 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:53:13,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-26 09:53:13,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-08-26 09:53:13,986 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:53:13,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:53:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1680543328, now seen corresponding path program 34 times [2023-08-26 09:53:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:53:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805350399] [2023-08-26 09:53:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:53:13,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:53:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:53:14,083 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 31 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:53:14,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:53:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805350399] [2023-08-26 09:53:14,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805350399] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:53:14,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583505231] [2023-08-26 09:53:14,084 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:53:14,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:53:14,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:53:14,085 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:53:14,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-26 09:53:14,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:53:14,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:53:14,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:53:14,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:53:14,355 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:53:14,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:53:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-26 09:53:14,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583505231] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:53:14,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:53:14,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 18 [2023-08-26 09:53:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666258986] [2023-08-26 09:53:14,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:53:14,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-26 09:53:14,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:53:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-26 09:53:14,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-08-26 09:53:14,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:53:14,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 2724 transitions, 99837 flow. Second operand has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 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) [2023-08-26 09:53:14,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:53:14,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:53:14,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:53:32,557 INFO L124 PetriNetUnfolderBase]: 11269/29385 cut-off events. [2023-08-26 09:53:32,557 INFO L125 PetriNetUnfolderBase]: For 1710463/1713981 co-relation queries the response was YES. [2023-08-26 09:53:33,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265756 conditions, 29385 events. 11269/29385 cut-off events. For 1710463/1713981 co-relation queries the response was YES. Maximal size of possible extension queue 1526. Compared 346979 event pairs, 2207 based on Foata normal form. 1915/30301 useless extension candidates. Maximal degree in co-relation 265574. Up to 6484 conditions per place. [2023-08-26 09:53:33,133 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 584 selfloop transitions, 2566 changer transitions 1/3157 dead transitions. [2023-08-26 09:53:33,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 3157 transitions, 118876 flow [2023-08-26 09:53:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-26 09:53:33,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-26 09:53:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2720 transitions. [2023-08-26 09:53:33,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40804080408040805 [2023-08-26 09:53:33,136 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2720 transitions. [2023-08-26 09:53:33,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2720 transitions. [2023-08-26 09:53:33,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:53:33,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2720 transitions. [2023-08-26 09:53:33,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 82.42424242424242) internal successors, (2720), 33 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:53:33,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:53:33,143 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 202.0) internal successors, (6868), 34 states have internal predecessors, (6868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:53:33,143 INFO L175 Difference]: Start difference. First operand has 626 places, 2724 transitions, 99837 flow. Second operand 33 states and 2720 transitions. [2023-08-26 09:53:33,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 3157 transitions, 118876 flow [2023-08-26 09:54:06,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 3157 transitions, 117369 flow, removed 224 selfloop flow, removed 13 redundant places. [2023-08-26 09:54:06,716 INFO L231 Difference]: Finished difference. Result has 652 places, 3057 transitions, 117570 flow [2023-08-26 09:54:06,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=98251, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=117570, PETRI_PLACES=652, PETRI_TRANSITIONS=3057} [2023-08-26 09:54:06,718 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 617 predicate places. [2023-08-26 09:54:06,719 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 3057 transitions, 117570 flow [2023-08-26 09:54:06,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 80.0) internal successors, (1440), 18 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) [2023-08-26 09:54:06,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:54:06,719 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:54:06,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-08-26 09:54:06,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:54:06,925 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:54:06,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:54:06,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1771192164, now seen corresponding path program 35 times [2023-08-26 09:54:06,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:54:06,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880328321] [2023-08-26 09:54:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:54:06,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:54:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:54:07,027 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:54:07,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:54:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880328321] [2023-08-26 09:54:07,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880328321] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:54:07,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10255803] [2023-08-26 09:54:07,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:54:07,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:54:07,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:54:07,034 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:54:07,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-08-26 09:54:07,171 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 09:54:07,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:54:07,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:54:07,173 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:54:07,327 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:54:07,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:54:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:54:07,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10255803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:54:07,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:54:07,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-26 09:54:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275124110] [2023-08-26 09:54:07,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:54:07,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:54:07,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:54:07,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:54:07,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:54:07,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:54:07,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 3057 transitions, 117570 flow. Second operand has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:54:07,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:54:07,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:54:07,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:54:29,108 INFO L124 PetriNetUnfolderBase]: 11817/31049 cut-off events. [2023-08-26 09:54:29,109 INFO L125 PetriNetUnfolderBase]: For 1928041/1932047 co-relation queries the response was YES. [2023-08-26 09:54:29,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290930 conditions, 31049 events. 11817/31049 cut-off events. For 1928041/1932047 co-relation queries the response was YES. Maximal size of possible extension queue 1641. Compared 371942 event pairs, 2251 based on Foata normal form. 2383/32451 useless extension candidates. Maximal degree in co-relation 290741. Up to 6890 conditions per place. [2023-08-26 09:54:29,768 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 451 selfloop transitions, 2859 changer transitions 5/3321 dead transitions. [2023-08-26 09:54:29,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 691 places, 3321 transitions, 130951 flow [2023-08-26 09:54:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-26 09:54:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-26 09:54:29,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3292 transitions. [2023-08-26 09:54:29,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074257425742574 [2023-08-26 09:54:29,770 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3292 transitions. [2023-08-26 09:54:29,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3292 transitions. [2023-08-26 09:54:29,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:54:29,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3292 transitions. [2023-08-26 09:54:29,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 82.3) internal successors, (3292), 40 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:54:29,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 202.0) internal successors, (8282), 41 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:54:29,777 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 202.0) internal successors, (8282), 41 states have internal predecessors, (8282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:54:29,777 INFO L175 Difference]: Start difference. First operand has 652 places, 3057 transitions, 117570 flow. Second operand 40 states and 3292 transitions. [2023-08-26 09:54:29,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 691 places, 3321 transitions, 130951 flow [2023-08-26 09:55:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 3321 transitions, 129410 flow, removed 368 selfloop flow, removed 17 redundant places. [2023-08-26 09:55:12,432 INFO L231 Difference]: Finished difference. Result has 678 places, 3235 transitions, 129217 flow [2023-08-26 09:55:12,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=116115, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3057, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2682, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=129217, PETRI_PLACES=678, PETRI_TRANSITIONS=3235} [2023-08-26 09:55:12,434 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 643 predicate places. [2023-08-26 09:55:12,434 INFO L495 AbstractCegarLoop]: Abstraction has has 678 places, 3235 transitions, 129217 flow [2023-08-26 09:55:12,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:55:12,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:55:12,434 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:55:12,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-08-26 09:55:12,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:55:12,635 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:55:12,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:55:12,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1681370420, now seen corresponding path program 36 times [2023-08-26 09:55:12,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:55:12,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674086433] [2023-08-26 09:55:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:55:12,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:55:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:55:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:55:12,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:55:12,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674086433] [2023-08-26 09:55:12,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674086433] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:55:12,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920188593] [2023-08-26 09:55:12,735 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:55:12,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:55:12,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:55:12,737 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:55:12,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-08-26 09:55:12,896 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-26 09:55:12,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:55:12,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:55:12,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:55:13,016 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:55:13,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:55:13,094 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:55:13,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920188593] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:55:13,094 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:55:13,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-26 09:55:13,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554169378] [2023-08-26 09:55:13,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:55:13,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:55:13,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:55:13,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:55:13,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:55:13,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:55:13,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 3235 transitions, 129217 flow. Second operand has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:55:13,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:55:13,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:55:13,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:55:39,775 INFO L124 PetriNetUnfolderBase]: 12965/33074 cut-off events. [2023-08-26 09:55:39,775 INFO L125 PetriNetUnfolderBase]: For 2329746/2333503 co-relation queries the response was YES. [2023-08-26 09:55:40,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331314 conditions, 33074 events. 12965/33074 cut-off events. For 2329746/2333503 co-relation queries the response was YES. Maximal size of possible extension queue 1772. Compared 394621 event pairs, 2945 based on Foata normal form. 2258/33990 useless extension candidates. Maximal degree in co-relation 331120. Up to 7003 conditions per place. [2023-08-26 09:55:40,616 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 688 selfloop transitions, 2985 changer transitions 4/3683 dead transitions. [2023-08-26 09:55:40,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 3683 transitions, 152320 flow [2023-08-26 09:55:40,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-26 09:55:40,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-26 09:55:40,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2650 transitions. [2023-08-26 09:55:40,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099628712871287 [2023-08-26 09:55:40,619 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2650 transitions. [2023-08-26 09:55:40,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2650 transitions. [2023-08-26 09:55:40,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:55:40,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2650 transitions. [2023-08-26 09:55:40,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 82.8125) internal successors, (2650), 32 states have internal predecessors, (2650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:55:40,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 202.0) internal successors, (6666), 33 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:55:40,626 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 202.0) internal successors, (6666), 33 states have internal predecessors, (6666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:55:40,626 INFO L175 Difference]: Start difference. First operand has 678 places, 3235 transitions, 129217 flow. Second operand 32 states and 2650 transitions. [2023-08-26 09:55:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 3683 transitions, 152320 flow [2023-08-26 09:56:33,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 3683 transitions, 150131 flow, removed 397 selfloop flow, removed 21 redundant places. [2023-08-26 09:56:33,753 INFO L231 Difference]: Finished difference. Result has 691 places, 3590 transitions, 149274 flow [2023-08-26 09:56:33,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=127204, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=149274, PETRI_PLACES=691, PETRI_TRANSITIONS=3590} [2023-08-26 09:56:33,755 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 656 predicate places. [2023-08-26 09:56:33,756 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 3590 transitions, 149274 flow [2023-08-26 09:56:33,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:56:33,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:56:33,756 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:56:33,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-08-26 09:56:33,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-26 09:56:33,957 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:56:33,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:56:33,957 INFO L85 PathProgramCache]: Analyzing trace with hash -763117882, now seen corresponding path program 37 times [2023-08-26 09:56:33,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:56:33,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950921488] [2023-08-26 09:56:33,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:56:33,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:56:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:56:34,054 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:56:34,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:56:34,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950921488] [2023-08-26 09:56:34,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950921488] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:56:34,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215927407] [2023-08-26 09:56:34,055 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:56:34,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:56:34,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:56:34,056 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:56:34,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-08-26 09:56:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:56:34,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:56:34,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:56:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:56:34,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:56:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:56:34,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215927407] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:56:34,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:56:34,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-26 09:56:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670755109] [2023-08-26 09:56:34,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:56:34,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:56:34,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:56:34,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:56:34,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:56:34,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:56:34,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 3590 transitions, 149274 flow. Second operand has 19 states, 19 states have (on average 79.6842105263158) internal successors, (1514), 19 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:56:34,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:56:34,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:56:34,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:57:02,109 INFO L124 PetriNetUnfolderBase]: 12932/33805 cut-off events. [2023-08-26 09:57:02,109 INFO L125 PetriNetUnfolderBase]: For 2560245/2564110 co-relation queries the response was YES. [2023-08-26 09:57:03,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342300 conditions, 33805 events. 12932/33805 cut-off events. For 2560245/2564110 co-relation queries the response was YES. Maximal size of possible extension queue 1807. Compared 413255 event pairs, 4380 based on Foata normal form. 1862/34519 useless extension candidates. Maximal degree in co-relation 342105. Up to 12622 conditions per place. [2023-08-26 09:57:03,376 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1262 selfloop transitions, 2404 changer transitions 0/3672 dead transitions. [2023-08-26 09:57:03,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 3672 transitions, 157711 flow [2023-08-26 09:57:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-26 09:57:03,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-26 09:57:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2224 transitions. [2023-08-26 09:57:03,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077741107444078 [2023-08-26 09:57:03,379 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2224 transitions. [2023-08-26 09:57:03,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2224 transitions. [2023-08-26 09:57:03,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:57:03,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2224 transitions. [2023-08-26 09:57:03,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 82.37037037037037) internal successors, (2224), 27 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:57:03,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:57:03,385 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 202.0) internal successors, (5656), 28 states have internal predecessors, (5656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:57:03,385 INFO L175 Difference]: Start difference. First operand has 691 places, 3590 transitions, 149274 flow. Second operand 27 states and 2224 transitions. [2023-08-26 09:57:03,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 3672 transitions, 157711 flow [2023-08-26 09:57:57,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 3672 transitions, 156186 flow, removed 668 selfloop flow, removed 11 redundant places. [2023-08-26 09:57:57,405 INFO L231 Difference]: Finished difference. Result has 708 places, 3592 transitions, 152702 flow [2023-08-26 09:57:57,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=147749, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2402, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=152702, PETRI_PLACES=708, PETRI_TRANSITIONS=3592} [2023-08-26 09:57:57,407 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 673 predicate places. [2023-08-26 09:57:57,407 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 3592 transitions, 152702 flow [2023-08-26 09:57:57,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.6842105263158) internal successors, (1514), 19 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:57:57,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:57:57,408 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:57:57,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-08-26 09:57:57,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-08-26 09:57:57,612 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:57:57,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:57:57,612 INFO L85 PathProgramCache]: Analyzing trace with hash 653325320, now seen corresponding path program 38 times [2023-08-26 09:57:57,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:57:57,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972138837] [2023-08-26 09:57:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:57:57,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:57:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:57:57,712 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:57:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:57:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972138837] [2023-08-26 09:57:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972138837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:57:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626422428] [2023-08-26 09:57:57,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:57:57,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:57:57,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:57:57,717 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:57:57,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-08-26 09:57:57,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:57:57,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:57:57,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:57:57,843 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:57:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:57:57,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:57:58,010 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-26 09:57:58,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626422428] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:57:58,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:57:58,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-26 09:57:58,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095576688] [2023-08-26 09:57:58,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:57:58,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:57:58,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:57:58,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:57:58,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:57:58,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:57:58,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 3592 transitions, 152702 flow. Second operand has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:57:58,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:57:58,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:57:58,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:58:28,350 INFO L124 PetriNetUnfolderBase]: 13328/34913 cut-off events. [2023-08-26 09:58:28,350 INFO L125 PetriNetUnfolderBase]: For 2716752/2720345 co-relation queries the response was YES. [2023-08-26 09:58:29,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360304 conditions, 34913 events. 13328/34913 cut-off events. For 2716752/2720345 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 427152 event pairs, 3652 based on Foata normal form. 1145/34873 useless extension candidates. Maximal degree in co-relation 360106. Up to 8953 conditions per place. [2023-08-26 09:58:29,919 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 2196 selfloop transitions, 1611 changer transitions 7/3820 dead transitions. [2023-08-26 09:58:29,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 736 places, 3820 transitions, 167026 flow [2023-08-26 09:58:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-26 09:58:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-26 09:58:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2396 transitions. [2023-08-26 09:58:29,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090133151246159 [2023-08-26 09:58:29,922 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2396 transitions. [2023-08-26 09:58:29,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2396 transitions. [2023-08-26 09:58:29,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:58:29,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2396 transitions. [2023-08-26 09:58:29,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 82.62068965517241) internal successors, (2396), 29 states have internal predecessors, (2396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:58:29,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:58:29,926 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 202.0) internal successors, (6060), 30 states have internal predecessors, (6060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:58:29,926 INFO L175 Difference]: Start difference. First operand has 708 places, 3592 transitions, 152702 flow. Second operand 29 states and 2396 transitions. [2023-08-26 09:58:29,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 736 places, 3820 transitions, 167026 flow [2023-08-26 09:59:28,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 3820 transitions, 162660 flow, removed 31 selfloop flow, removed 21 redundant places. [2023-08-26 09:59:29,094 INFO L231 Difference]: Finished difference. Result has 723 places, 3689 transitions, 157173 flow [2023-08-26 09:59:29,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=148474, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1508, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2013, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=157173, PETRI_PLACES=723, PETRI_TRANSITIONS=3689} [2023-08-26 09:59:29,097 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 688 predicate places. [2023-08-26 09:59:29,097 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 3689 transitions, 157173 flow [2023-08-26 09:59:29,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.89473684210526) internal successors, (1518), 19 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:59:29,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:59:29,098 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:59:29,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-08-26 09:59:29,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-08-26 09:59:29,304 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 09:59:29,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:59:29,304 INFO L85 PathProgramCache]: Analyzing trace with hash -623009750, now seen corresponding path program 39 times [2023-08-26 09:59:29,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:59:29,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160740504] [2023-08-26 09:59:29,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:59:29,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:59:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:59:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:59:29,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:59:29,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160740504] [2023-08-26 09:59:29,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160740504] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:59:29,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550759849] [2023-08-26 09:59:29,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:59:29,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:59:29,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:59:29,402 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:59:29,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-08-26 09:59:29,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-26 09:59:29,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:59:29,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 09:59:29,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:59:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:59:29,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:59:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:59:29,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550759849] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:59:29,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:59:29,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-26 09:59:29,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945053014] [2023-08-26 09:59:29,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:59:29,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-26 09:59:29,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:59:29,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-26 09:59:29,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2023-08-26 09:59:29,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 09:59:29,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 723 places, 3689 transitions, 157173 flow. Second operand has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:59:29,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:59:29,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 09:59:29,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 10:00:02,307 INFO L124 PetriNetUnfolderBase]: 13633/35477 cut-off events. [2023-08-26 10:00:02,307 INFO L125 PetriNetUnfolderBase]: For 2758009/2761641 co-relation queries the response was YES. [2023-08-26 10:00:03,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367285 conditions, 35477 events. 13633/35477 cut-off events. For 2758009/2761641 co-relation queries the response was YES. Maximal size of possible extension queue 1896. Compared 432063 event pairs, 3040 based on Foata normal form. 1173/35338 useless extension candidates. Maximal degree in co-relation 367081. Up to 7669 conditions per place. [2023-08-26 10:00:03,913 INFO L140 encePairwiseOnDemand]: 196/202 looper letters, 1387 selfloop transitions, 2477 changer transitions 1/3871 dead transitions. [2023-08-26 10:00:03,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 3871 transitions, 169048 flow [2023-08-26 10:00:03,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-26 10:00:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-26 10:00:03,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2561 transitions. [2023-08-26 10:00:03,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089747684445864 [2023-08-26 10:00:03,915 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2561 transitions. [2023-08-26 10:00:03,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2561 transitions. [2023-08-26 10:00:03,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 10:00:03,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2561 transitions. [2023-08-26 10:00:03,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 82.61290322580645) internal successors, (2561), 31 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:00:03,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 202.0) internal successors, (6464), 32 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:00:03,920 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 202.0) internal successors, (6464), 32 states have internal predecessors, (6464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:00:03,920 INFO L175 Difference]: Start difference. First operand has 723 places, 3689 transitions, 157173 flow. Second operand 31 states and 2561 transitions. [2023-08-26 10:00:03,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 3871 transitions, 169048 flow [2023-08-26 10:01:14,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 744 places, 3871 transitions, 167999 flow, removed 413 selfloop flow, removed 9 redundant places. [2023-08-26 10:01:15,048 INFO L231 Difference]: Finished difference. Result has 752 places, 3769 transitions, 166896 flow [2023-08-26 10:01:15,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=156126, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2398, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=166896, PETRI_PLACES=752, PETRI_TRANSITIONS=3769} [2023-08-26 10:01:15,051 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 717 predicate places. [2023-08-26 10:01:15,051 INFO L495 AbstractCegarLoop]: Abstraction has has 752 places, 3769 transitions, 166896 flow [2023-08-26 10:01:15,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 79.73684210526316) internal successors, (1515), 19 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:01:15,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 10:01:15,051 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 10:01:15,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-08-26 10:01:15,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-08-26 10:01:15,257 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 10:01:15,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 10:01:15,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1197907050, now seen corresponding path program 40 times [2023-08-26 10:01:15,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 10:01:15,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386879223] [2023-08-26 10:01:15,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 10:01:15,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 10:01:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 10:01:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:01:15,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 10:01:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386879223] [2023-08-26 10:01:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386879223] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 10:01:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568979864] [2023-08-26 10:01:15,365 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 10:01:15,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:01:15,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 10:01:15,369 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 10:01:15,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-08-26 10:01:15,503 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 10:01:15,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 10:01:15,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-26 10:01:15,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 10:01:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:01:15,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 10:01:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 10:01:15,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568979864] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 10:01:15,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 10:01:15,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-08-26 10:01:15,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98539737] [2023-08-26 10:01:15,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 10:01:15,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-26 10:01:15,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 10:01:15,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-26 10:01:15,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-08-26 10:01:15,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 202 [2023-08-26 10:01:15,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 752 places, 3769 transitions, 166896 flow. Second operand has 21 states, 21 states have (on average 79.66666666666667) internal successors, (1673), 21 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 10:01:15,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 10:01:15,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 202 [2023-08-26 10:01:15,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-26 10:01:43,095 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 10:01:43,096 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-26 10:01:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-26 10:01:43,563 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (20 of 21 remaining) [2023-08-26 10:01:43,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-08-26 10:01:43,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 10:01:43,764 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). [2023-08-26 10:01:43,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-26 10:01:43,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-26 10:01:43,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-26 10:01:43,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-26 10:01:43,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-26 10:01:43,766 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-26 10:01:43,767 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-26 10:01:43,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-26 10:01:43,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-26 10:01:43,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-26 10:01:43,768 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-26 10:01:43,769 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-26 10:01:43,769 INFO L445 BasicCegarLoop]: Path program histogram: [40, 6, 1, 1, 1] [2023-08-26 10:01:43,773 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 10:01:43,773 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 10:01:43,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 10:01:43 BasicIcfg [2023-08-26 10:01:43,777 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 10:01:43,778 INFO L158 Benchmark]: Toolchain (without parser) took 813321.04ms. Allocated memory was 343.9MB in the beginning and 12.2GB in the end (delta: 11.8GB). Free memory was 320.3MB in the beginning and 10.3GB in the end (delta: -10.0GB). Peak memory consumption was 2.0GB. Max. memory is 16.0GB. [2023-08-26 10:01:43,778 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 320.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 10:01:43,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.09ms. Allocated memory is still 343.9MB. Free memory was 320.3MB in the beginning and 309.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2023-08-26 10:01:43,779 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.96ms. Allocated memory is still 343.9MB. Free memory was 309.0MB in the beginning and 307.5MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-26 10:01:43,779 INFO L158 Benchmark]: Boogie Preprocessor took 35.74ms. Allocated memory is still 343.9MB. Free memory was 307.5MB in the beginning and 305.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 10:01:43,779 INFO L158 Benchmark]: RCFGBuilder took 453.34ms. Allocated memory is still 343.9MB. Free memory was 305.9MB in the beginning and 286.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 10:01:43,780 INFO L158 Benchmark]: TraceAbstraction took 812542.06ms. Allocated memory was 343.9MB in the beginning and 12.2GB in the end (delta: 11.8GB). Free memory was 286.0MB in the beginning and 10.3GB in the end (delta: -10.0GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. [2023-08-26 10:01:43,781 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 343.9MB. Free memory is still 320.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 237.09ms. Allocated memory is still 343.9MB. Free memory was 320.3MB in the beginning and 309.0MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.96ms. Allocated memory is still 343.9MB. Free memory was 309.0MB in the beginning and 307.5MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.74ms. Allocated memory is still 343.9MB. Free memory was 307.5MB in the beginning and 305.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 453.34ms. Allocated memory is still 343.9MB. Free memory was 305.9MB in the beginning and 286.5MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 812542.06ms. Allocated memory was 343.9MB in the beginning and 12.2GB in the end (delta: 11.8GB). Free memory was 286.0MB in the beginning and 10.3GB in the end (delta: -10.0GB). Peak memory consumption was 1.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 98 PlacesBefore, 35 PlacesAfterwards, 96 TransitionsBefore, 32 TransitionsAfterwards, 1636 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 95 TotalNumberOfCompositions, 3843 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2506, independent: 2372, independent conditional: 0, independent unconditional: 2372, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 956, independent: 931, independent conditional: 0, independent unconditional: 931, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2506, independent: 1441, independent conditional: 0, independent unconditional: 1441, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 956, unknown conditional: 0, unknown unconditional: 956] , Statistics on independence cache: Total cache size (in pairs): 121, Positive cache size: 105, Positive conditional cache size: 0, Positive unconditional cache size: 105, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (21states, 78/202 universal loopers) in iteration 49,while PetriNetUnfolder was constructing finite prefix that currently has 285016 conditions, 27959 events (10325/27958 cut-off events. For 2302754/2305904 co-relation queries the response was YES. Maximal size of possible extension queue 1942. Compared 359781 event pairs, 3290 based on Foata normal form. 970/28986 useless extension candidates. Maximal degree in co-relation 284803. Up to 6972 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 136 locations, 21 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: 812.4s, OverallIterations: 49, TraceHistogramMax: 5, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 784.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2000 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2000 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 6.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 306 mSDsCounter, 341 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14451 IncrementalHoareTripleChecker+Invalid, 14792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 341 mSolverCounterUnsat, 172 mSDtfsCounter, 14451 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3432 GetRequests, 2073 SyntacticMatches, 216 SemanticMatches, 1143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12968 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166896occurred in iteration=48, InterpolantAutomatonStates: 960, 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: 0.5s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 2607 NumberOfCodeBlocks, 2583 NumberOfCodeBlocksAsserted, 161 NumberOfCheckSat, 3731 ConstructedInterpolants, 0 QuantifiedInterpolants, 14877 SizeOfPredicates, 39 NumberOfNonLiveVariables, 7514 ConjunctsInSsa, 359 ConjunctsInUnsatCore, 133 InterpolantComputations, 7 PerfectInterpolantSequences, 862/3053 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown