/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 06:39:05,935 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 06:39:06,012 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 06:39:06,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 06:39:06,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 06:39:06,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 06:39:06,048 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 06:39:06,048 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 06:39:06,049 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 06:39:06,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 06:39:06,052 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 06:39:06,053 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 06:39:06,053 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 06:39:06,054 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 06:39:06,054 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 06:39:06,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 06:39:06,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 06:39:06,055 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 06:39:06,055 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 06:39:06,056 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 06:39:06,056 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 06:39:06,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 06:39:06,057 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 06:39:06,057 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 06:39:06,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 06:39:06,058 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 06:39:06,058 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 06:39:06,058 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:39:06,058 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 06:39:06,059 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 06:39:06,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 06:39:06,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 06:39:06,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 06:39:06,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 06:39:06,060 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 06:39:06,061 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 06:39:06,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 06:39:06,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 06:39:06,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 06:39:06,410 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 06:39:06,410 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 06:39:06,411 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-08-25 06:39:07,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 06:39:07,819 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 06:39:07,820 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-08-25 06:39:07,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da83a64c2/ac5cc2443f9644c7bf7346b1dbee9ac7/FLAG7daa9eab7 [2023-08-25 06:39:07,835 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da83a64c2/ac5cc2443f9644c7bf7346b1dbee9ac7 [2023-08-25 06:39:07,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 06:39:07,837 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 06:39:07,838 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 06:39:07,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 06:39:07,840 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 06:39:07,841 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:39:07" (1/1) ... [2023-08-25 06:39:07,842 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37f5f8b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:07, skipping insertion in model container [2023-08-25 06:39:07,842 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:39:07" (1/1) ... [2023-08-25 06:39:07,856 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 06:39:07,976 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:39:07,984 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 06:39:08,002 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 06:39:08,009 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:39:08,009 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-25 06:39:08,014 INFO L206 MainTranslator]: Completed translation [2023-08-25 06:39:08,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08 WrapperNode [2023-08-25 06:39:08,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 06:39:08,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 06:39:08,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 06:39:08,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 06:39:08,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,028 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,044 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 81 [2023-08-25 06:39:08,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 06:39:08,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 06:39:08,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 06:39:08,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 06:39:08,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,062 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,077 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 06:39:08,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 06:39:08,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 06:39:08,080 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 06:39:08,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (1/1) ... [2023-08-25 06:39:08,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 06:39:08,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:08,114 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 06:39:08,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 06:39:08,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 06:39:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 06:39:08,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 06:39:08,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 06:39:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 06:39:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 06:39:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 06:39:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 06:39:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-25 06:39:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-25 06:39:08,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 06:39:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 06:39:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 06:39:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 06:39:08,160 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 06:39:08,270 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 06:39:08,273 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 06:39:08,520 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 06:39:08,571 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 06:39:08,571 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 06:39:08,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:39:08 BoogieIcfgContainer [2023-08-25 06:39:08,574 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 06:39:08,576 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 06:39:08,576 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 06:39:08,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 06:39:08,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:39:07" (1/3) ... [2023-08-25 06:39:08,579 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9062bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:39:08, skipping insertion in model container [2023-08-25 06:39:08,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:39:08" (2/3) ... [2023-08-25 06:39:08,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9062bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:39:08, skipping insertion in model container [2023-08-25 06:39:08,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:39:08" (3/3) ... [2023-08-25 06:39:08,581 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2023-08-25 06:39:08,593 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 06:39:08,593 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-25 06:39:08,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 06:39:08,653 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 06:39:08,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 122 transitions, 260 flow [2023-08-25 06:39:08,721 INFO L124 PetriNetUnfolderBase]: 6/120 cut-off events. [2023-08-25 06:39:08,721 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:39:08,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 120 events. 6/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 103 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-25 06:39:08,727 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 122 transitions, 260 flow [2023-08-25 06:39:08,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 111 transitions, 234 flow [2023-08-25 06:39:08,733 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 06:39:08,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 111 transitions, 234 flow [2023-08-25 06:39:08,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 111 transitions, 234 flow [2023-08-25 06:39:08,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 111 transitions, 234 flow [2023-08-25 06:39:08,769 INFO L124 PetriNetUnfolderBase]: 6/111 cut-off events. [2023-08-25 06:39:08,769 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 06:39:08,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 6/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 102 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-25 06:39:08,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 1490 [2023-08-25 06:39:11,291 INFO L134 LiptonReduction]: Checked pairs total: 4802 [2023-08-25 06:39:11,291 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-25 06:39:11,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 06:39:11,308 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;@1004d6cd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 06:39:11,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-08-25 06:39:11,309 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 06:39:11,310 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 06:39:11,310 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 06:39:11,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:11,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 06:39:11,311 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:11,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:11,315 INFO L85 PathProgramCache]: Analyzing trace with hash 503, now seen corresponding path program 1 times [2023-08-25 06:39:11,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:11,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924218989] [2023-08-25 06:39:11,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:11,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:11,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924218989] [2023-08-25 06:39:11,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924218989] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:39:11,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:39:11,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 06:39:11,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334081728] [2023-08-25 06:39:11,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:39:11,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 06:39:11,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 06:39:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 06:39:11,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 231 [2023-08-25 06:39:11,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:11,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 231 [2023-08-25 06:39:11,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:11,475 INFO L124 PetriNetUnfolderBase]: 57/116 cut-off events. [2023-08-25 06:39:11,475 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-25 06:39:11,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 116 events. 57/116 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 418 event pairs, 27 based on Foata normal form. 26/115 useless extension candidates. Maximal degree in co-relation 172. Up to 95 conditions per place. [2023-08-25 06:39:11,477 INFO L140 encePairwiseOnDemand]: 216/231 looper letters, 14 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-25 06:39:11,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 82 flow [2023-08-25 06:39:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 06:39:11,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 06:39:11,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 237 transitions. [2023-08-25 06:39:11,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512987012987013 [2023-08-25 06:39:11,489 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 237 transitions. [2023-08-25 06:39:11,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 237 transitions. [2023-08-25 06:39:11,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:11,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 237 transitions. [2023-08-25 06:39:11,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 118.5) internal successors, (237), 2 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,498 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,500 INFO L175 Difference]: Start difference. First operand has 39 places, 36 transitions, 84 flow. Second operand 2 states and 237 transitions. [2023-08-25 06:39:11,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 82 flow [2023-08-25 06:39:11,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 74 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 06:39:11,503 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-25 06:39:11,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-25 06:39:11,508 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -16 predicate places. [2023-08-25 06:39:11,508 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-25 06:39:11,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 104.5) internal successors, (209), 2 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:11,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 06:39:11,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 06:39:11,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:11,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:11,509 INFO L85 PathProgramCache]: Analyzing trace with hash 479489179, now seen corresponding path program 1 times [2023-08-25 06:39:11,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:11,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347249322] [2023-08-25 06:39:11,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:11,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:11,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:11,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:11,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347249322] [2023-08-25 06:39:11,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347249322] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:39:11,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:39:11,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 06:39:11,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812298313] [2023-08-25 06:39:11,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:39:11,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 06:39:11,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:11,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 06:39:11,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 06:39:11,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:11,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:11,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:11,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:11,624 INFO L124 PetriNetUnfolderBase]: 90/163 cut-off events. [2023-08-25 06:39:11,624 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-25 06:39:11,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 163 events. 90/163 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 509 event pairs, 66 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 329. Up to 160 conditions per place. [2023-08-25 06:39:11,625 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-25 06:39:11,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-08-25 06:39:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 06:39:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 06:39:11,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 295 transitions. [2023-08-25 06:39:11,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42568542568542567 [2023-08-25 06:39:11,628 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 295 transitions. [2023-08-25 06:39:11,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 295 transitions. [2023-08-25 06:39:11,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:11,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 295 transitions. [2023-08-25 06:39:11,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,632 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 295 transitions. [2023-08-25 06:39:11,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-08-25 06:39:11,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:39:11,633 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-25 06:39:11,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-25 06:39:11,634 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -16 predicate places. [2023-08-25 06:39:11,634 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-25 06:39:11,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:11,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:11,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 06:39:11,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:11,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1101130589, now seen corresponding path program 1 times [2023-08-25 06:39:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166098177] [2023-08-25 06:39:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:11,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:11,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166098177] [2023-08-25 06:39:11,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166098177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:39:11,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:39:11,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 06:39:11,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429221050] [2023-08-25 06:39:11,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:39:11,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:39:11,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:11,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:39:11,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:39:11,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 231 [2023-08-25 06:39:11,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:11,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:11,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 231 [2023-08-25 06:39:11,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:11,992 INFO L124 PetriNetUnfolderBase]: 66/141 cut-off events. [2023-08-25 06:39:11,993 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-25 06:39:11,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 141 events. 66/141 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 467 event pairs, 15 based on Foata normal form. 10/124 useless extension candidates. Maximal degree in co-relation 261. Up to 89 conditions per place. [2023-08-25 06:39:11,994 INFO L140 encePairwiseOnDemand]: 227/231 looper letters, 19 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-08-25 06:39:11,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 103 flow [2023-08-25 06:39:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:39:11,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:39:11,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 395 transitions. [2023-08-25 06:39:11,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274891774891775 [2023-08-25 06:39:11,996 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 395 transitions. [2023-08-25 06:39:11,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 395 transitions. [2023-08-25 06:39:11,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:11,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 395 transitions. [2023-08-25 06:39:11,998 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) [2023-08-25 06:39:12,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 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) [2023-08-25 06:39:12,001 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 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) [2023-08-25 06:39:12,001 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 4 states and 395 transitions. [2023-08-25 06:39:12,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 103 flow [2023-08-25 06:39:12,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 06:39:12,002 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 57 flow [2023-08-25 06:39:12,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-08-25 06:39:12,003 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -13 predicate places. [2023-08-25 06:39:12,003 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 57 flow [2023-08-25 06:39:12,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:12,004 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:12,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 06:39:12,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:12,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:12,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2134813121, now seen corresponding path program 1 times [2023-08-25 06:39:12,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:12,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607525588] [2023-08-25 06:39:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:12,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:12,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607525588] [2023-08-25 06:39:12,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607525588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:39:12,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:39:12,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 06:39:12,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731019953] [2023-08-25 06:39:12,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:39:12,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 06:39:12,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:12,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 06:39:12,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-25 06:39:12,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:12,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 57 flow. Second operand has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:12,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:12,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:12,211 INFO L124 PetriNetUnfolderBase]: 115/244 cut-off events. [2023-08-25 06:39:12,212 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2023-08-25 06:39:12,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 244 events. 115/244 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 999 event pairs, 45 based on Foata normal form. 2/219 useless extension candidates. Maximal degree in co-relation 549. Up to 119 conditions per place. [2023-08-25 06:39:12,213 INFO L140 encePairwiseOnDemand]: 226/231 looper letters, 28 selfloop transitions, 5 changer transitions 2/38 dead transitions. [2023-08-25 06:39:12,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 38 transitions, 178 flow [2023-08-25 06:39:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 06:39:12,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 06:39:12,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 494 transitions. [2023-08-25 06:39:12,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4277056277056277 [2023-08-25 06:39:12,215 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 494 transitions. [2023-08-25 06:39:12,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 494 transitions. [2023-08-25 06:39:12,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:12,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 494 transitions. [2023-08-25 06:39:12,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.8) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,220 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 57 flow. Second operand 5 states and 494 transitions. [2023-08-25 06:39:12,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 38 transitions, 178 flow [2023-08-25 06:39:12,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 38 transitions, 171 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 06:39:12,221 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 92 flow [2023-08-25 06:39:12,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-08-25 06:39:12,222 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-25 06:39:12,222 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 92 flow [2023-08-25 06:39:12,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:12,223 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:12,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 06:39:12,223 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:12,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1175919213, now seen corresponding path program 2 times [2023-08-25 06:39:12,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:12,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193568878] [2023-08-25 06:39:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:12,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:12,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193568878] [2023-08-25 06:39:12,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193568878] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 06:39:12,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 06:39:12,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 06:39:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015936821] [2023-08-25 06:39:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:39:12,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 06:39:12,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:12,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 06:39:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-25 06:39:12,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 231 [2023-08-25 06:39:12,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:12,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 231 [2023-08-25 06:39:12,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:12,373 INFO L124 PetriNetUnfolderBase]: 83/177 cut-off events. [2023-08-25 06:39:12,374 INFO L125 PetriNetUnfolderBase]: For 189/202 co-relation queries the response was YES. [2023-08-25 06:39:12,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 177 events. 83/177 cut-off events. For 189/202 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 654 event pairs, 35 based on Foata normal form. 17/180 useless extension candidates. Maximal degree in co-relation 470. Up to 96 conditions per place. [2023-08-25 06:39:12,375 INFO L140 encePairwiseOnDemand]: 227/231 looper letters, 22 selfloop transitions, 4 changer transitions 0/31 dead transitions. [2023-08-25 06:39:12,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 169 flow [2023-08-25 06:39:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:39:12,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:39:12,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2023-08-25 06:39:12,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44047619047619047 [2023-08-25 06:39:12,377 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2023-08-25 06:39:12,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2023-08-25 06:39:12,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:12,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2023-08-25 06:39:12,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 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) [2023-08-25 06:39:12,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 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) [2023-08-25 06:39:12,381 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 92 flow. Second operand 4 states and 407 transitions. [2023-08-25 06:39:12,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 169 flow [2023-08-25 06:39:12,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 165 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-25 06:39:12,383 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 103 flow [2023-08-25 06:39:12,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-25 06:39:12,383 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-08-25 06:39:12,384 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 103 flow [2023-08-25 06:39:12,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:12,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:12,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 06:39:12,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:12,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:12,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1292515356, now seen corresponding path program 1 times [2023-08-25 06:39:12,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:12,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131093484] [2023-08-25 06:39:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:12,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:39:12,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:12,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131093484] [2023-08-25 06:39:12,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131093484] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:12,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692096194] [2023-08-25 06:39:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:12,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:12,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:12,585 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:12,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-25 06:39:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:12,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-25 06:39:12,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:39:12,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:39:12,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692096194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:12,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:12,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-08-25 06:39:12,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837669757] [2023-08-25 06:39:12,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-25 06:39:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-25 06:39:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-25 06:39:12,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 231 [2023-08-25 06:39:12,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 103 flow. Second operand has 10 states, 10 states have (on average 96.6) internal successors, (966), 10 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:12,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:12,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 231 [2023-08-25 06:39:12,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:13,091 INFO L124 PetriNetUnfolderBase]: 112/238 cut-off events. [2023-08-25 06:39:13,091 INFO L125 PetriNetUnfolderBase]: For 268/273 co-relation queries the response was YES. [2023-08-25 06:39:13,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 658 conditions, 238 events. 112/238 cut-off events. For 268/273 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 909 event pairs, 18 based on Foata normal form. 13/242 useless extension candidates. Maximal degree in co-relation 649. Up to 83 conditions per place. [2023-08-25 06:39:13,094 INFO L140 encePairwiseOnDemand]: 225/231 looper letters, 32 selfloop transitions, 13 changer transitions 0/50 dead transitions. [2023-08-25 06:39:13,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 292 flow [2023-08-25 06:39:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-25 06:39:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-25 06:39:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 699 transitions. [2023-08-25 06:39:13,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4322820037105751 [2023-08-25 06:39:13,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 699 transitions. [2023-08-25 06:39:13,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 699 transitions. [2023-08-25 06:39:13,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:13,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 699 transitions. [2023-08-25 06:39:13,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:13,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:13,101 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:13,101 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 103 flow. Second operand 7 states and 699 transitions. [2023-08-25 06:39:13,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 292 flow [2023-08-25 06:39:13,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 278 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-25 06:39:13,104 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 208 flow [2023-08-25 06:39:13,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2023-08-25 06:39:13,105 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-08-25 06:39:13,105 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 208 flow [2023-08-25 06:39:13,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 96.6) internal successors, (966), 10 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:13,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:13,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:13,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:13,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-25 06:39:13,313 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:13,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash -915032494, now seen corresponding path program 2 times [2023-08-25 06:39:13,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:13,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442987965] [2023-08-25 06:39:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:13,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:13,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:13,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:13,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442987965] [2023-08-25 06:39:13,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442987965] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146826663] [2023-08-25 06:39:13,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:39:13,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:13,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:13,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:13,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-25 06:39:13,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:39:13,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:13,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 06:39:13,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:13,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:39:14,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146826663] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:14,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-25 06:39:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 12 [2023-08-25 06:39:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010813165] [2023-08-25 06:39:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 06:39:14,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 06:39:14,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 06:39:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:39:14,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 231 [2023-08-25 06:39:14,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 208 flow. Second operand has 6 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) [2023-08-25 06:39:14,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:14,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 231 [2023-08-25 06:39:14,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:14,130 INFO L124 PetriNetUnfolderBase]: 220/480 cut-off events. [2023-08-25 06:39:14,130 INFO L125 PetriNetUnfolderBase]: For 914/923 co-relation queries the response was YES. [2023-08-25 06:39:14,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 480 events. 220/480 cut-off events. For 914/923 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2372 event pairs, 46 based on Foata normal form. 6/475 useless extension candidates. Maximal degree in co-relation 1491. Up to 173 conditions per place. [2023-08-25 06:39:14,133 INFO L140 encePairwiseOnDemand]: 227/231 looper letters, 42 selfloop transitions, 12 changer transitions 4/63 dead transitions. [2023-08-25 06:39:14,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 63 transitions, 463 flow [2023-08-25 06:39:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 06:39:14,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 06:39:14,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 429 transitions. [2023-08-25 06:39:14,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2023-08-25 06:39:14,135 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 429 transitions. [2023-08-25 06:39:14,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 429 transitions. [2023-08-25 06:39:14,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:14,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 429 transitions. [2023-08-25 06:39:14,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.25) internal successors, (429), 4 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:14,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 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) [2023-08-25 06:39:14,138 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 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) [2023-08-25 06:39:14,138 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 208 flow. Second operand 4 states and 429 transitions. [2023-08-25 06:39:14,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 63 transitions, 463 flow [2023-08-25 06:39:14,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 461 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-25 06:39:14,142 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 306 flow [2023-08-25 06:39:14,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-08-25 06:39:14,143 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-25 06:39:14,143 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 306 flow [2023-08-25 06:39:14,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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) [2023-08-25 06:39:14,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:14,144 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:14,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:14,349 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,SelfDestructingSolverStorable6 [2023-08-25 06:39:14,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:14,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash 510947444, now seen corresponding path program 3 times [2023-08-25 06:39:14,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:14,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624743436] [2023-08-25 06:39:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:14,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:14,612 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:14,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:14,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624743436] [2023-08-25 06:39:14,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624743436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:14,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6697407] [2023-08-25 06:39:14,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:39:14,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:14,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:14,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:14,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-25 06:39:14,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-25 06:39:14,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:14,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:39:14,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:14,838 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:15,260 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6697407] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:15,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:15,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 06:39:15,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681921719] [2023-08-25 06:39:15,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:15,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 06:39:15,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:15,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 06:39:15,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-25 06:39:15,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:15,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 306 flow. Second operand has 13 states, 13 states have (on average 94.38461538461539) internal successors, (1227), 13 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:15,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:15,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:15,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:15,908 INFO L124 PetriNetUnfolderBase]: 415/868 cut-off events. [2023-08-25 06:39:15,908 INFO L125 PetriNetUnfolderBase]: For 2376/2380 co-relation queries the response was YES. [2023-08-25 06:39:15,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 868 events. 415/868 cut-off events. For 2376/2380 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4817 event pairs, 56 based on Foata normal form. 16/876 useless extension candidates. Maximal degree in co-relation 3124. Up to 389 conditions per place. [2023-08-25 06:39:15,915 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 54 selfloop transitions, 53 changer transitions 9/119 dead transitions. [2023-08-25 06:39:15,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 119 transitions, 1080 flow [2023-08-25 06:39:15,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-25 06:39:15,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-25 06:39:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1367 transitions. [2023-08-25 06:39:15,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226963512677798 [2023-08-25 06:39:15,919 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1367 transitions. [2023-08-25 06:39:15,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1367 transitions. [2023-08-25 06:39:15,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:15,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1367 transitions. [2023-08-25 06:39:15,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 97.64285714285714) internal successors, (1367), 14 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:15,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 231.0) internal successors, (3465), 15 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:15,930 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 231.0) internal successors, (3465), 15 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:15,930 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 306 flow. Second operand 14 states and 1367 transitions. [2023-08-25 06:39:15,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 119 transitions, 1080 flow [2023-08-25 06:39:15,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 119 transitions, 1080 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 06:39:15,937 INFO L231 Difference]: Finished difference. Result has 69 places, 81 transitions, 908 flow [2023-08-25 06:39:15,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=908, PETRI_PLACES=69, PETRI_TRANSITIONS=81} [2023-08-25 06:39:15,940 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2023-08-25 06:39:15,941 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 81 transitions, 908 flow [2023-08-25 06:39:15,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.38461538461539) internal successors, (1227), 13 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:15,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:15,943 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:15,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:16,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:16,149 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:16,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1055203340, now seen corresponding path program 4 times [2023-08-25 06:39:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:16,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407977874] [2023-08-25 06:39:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:16,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407977874] [2023-08-25 06:39:16,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407977874] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:16,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401183055] [2023-08-25 06:39:16,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:39:16,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:16,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:16,379 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:16,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-25 06:39:16,500 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:39:16,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:16,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:39:16,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:16,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401183055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:16,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-25 06:39:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26466732] [2023-08-25 06:39:16,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:16,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-25 06:39:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-25 06:39:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-08-25 06:39:16,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:16,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 81 transitions, 908 flow. Second operand has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:16,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:16,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:16,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:18,109 INFO L124 PetriNetUnfolderBase]: 474/1033 cut-off events. [2023-08-25 06:39:18,109 INFO L125 PetriNetUnfolderBase]: For 6156/6186 co-relation queries the response was YES. [2023-08-25 06:39:18,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4702 conditions, 1033 events. 474/1033 cut-off events. For 6156/6186 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5866 event pairs, 67 based on Foata normal form. 58/1082 useless extension candidates. Maximal degree in co-relation 4676. Up to 322 conditions per place. [2023-08-25 06:39:18,118 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 80 selfloop transitions, 91 changer transitions 0/174 dead transitions. [2023-08-25 06:39:18,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 174 transitions, 1902 flow [2023-08-25 06:39:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-25 06:39:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-25 06:39:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2150 transitions. [2023-08-25 06:39:18,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230617866981503 [2023-08-25 06:39:18,124 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2150 transitions. [2023-08-25 06:39:18,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2150 transitions. [2023-08-25 06:39:18,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:18,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2150 transitions. [2023-08-25 06:39:18,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 97.72727272727273) internal successors, (2150), 22 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:18,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 231.0) internal successors, (5313), 23 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:18,137 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 231.0) internal successors, (5313), 23 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:18,137 INFO L175 Difference]: Start difference. First operand has 69 places, 81 transitions, 908 flow. Second operand 22 states and 2150 transitions. [2023-08-25 06:39:18,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 174 transitions, 1902 flow [2023-08-25 06:39:18,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 174 transitions, 1815 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-08-25 06:39:18,155 INFO L231 Difference]: Finished difference. Result has 99 places, 115 transitions, 1545 flow [2023-08-25 06:39:18,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1545, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2023-08-25 06:39:18,156 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 60 predicate places. [2023-08-25 06:39:18,156 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 1545 flow [2023-08-25 06:39:18,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:18,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:18,157 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:18,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-25 06:39:18,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:18,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:18,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1690472794, now seen corresponding path program 5 times [2023-08-25 06:39:18,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174526806] [2023-08-25 06:39:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:18,567 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:18,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:18,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174526806] [2023-08-25 06:39:18,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174526806] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:18,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493452538] [2023-08-25 06:39:18,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:39:18,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:18,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:18,569 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:18,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-25 06:39:18,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-25 06:39:18,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:18,647 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:39:18,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:18,794 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:18,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:18,965 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:18,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493452538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:18,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:18,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 18 [2023-08-25 06:39:18,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378944081] [2023-08-25 06:39:18,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:39:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:39:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:39:18,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:18,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 115 transitions, 1545 flow. Second operand has 18 states, 18 states have (on average 94.16666666666667) internal successors, (1695), 18 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:18,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:18,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:18,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:20,166 INFO L124 PetriNetUnfolderBase]: 740/1580 cut-off events. [2023-08-25 06:39:20,166 INFO L125 PetriNetUnfolderBase]: For 15541/15577 co-relation queries the response was YES. [2023-08-25 06:39:20,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8398 conditions, 1580 events. 740/1580 cut-off events. For 15541/15577 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9659 event pairs, 51 based on Foata normal form. 68/1643 useless extension candidates. Maximal degree in co-relation 8361. Up to 439 conditions per place. [2023-08-25 06:39:20,182 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 106 selfloop transitions, 172 changer transitions 26/307 dead transitions. [2023-08-25 06:39:20,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 307 transitions, 4081 flow [2023-08-25 06:39:20,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 06:39:20,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 06:39:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3307 transitions. [2023-08-25 06:39:20,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4210593328240387 [2023-08-25 06:39:20,191 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3307 transitions. [2023-08-25 06:39:20,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3307 transitions. [2023-08-25 06:39:20,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:20,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3307 transitions. [2023-08-25 06:39:20,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 97.26470588235294) internal successors, (3307), 34 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:20,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 231.0) internal successors, (8085), 35 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:20,210 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 231.0) internal successors, (8085), 35 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:20,210 INFO L175 Difference]: Start difference. First operand has 99 places, 115 transitions, 1545 flow. Second operand 34 states and 3307 transitions. [2023-08-25 06:39:20,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 307 transitions, 4081 flow [2023-08-25 06:39:20,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 307 transitions, 3869 flow, removed 83 selfloop flow, removed 7 redundant places. [2023-08-25 06:39:20,262 INFO L231 Difference]: Finished difference. Result has 132 places, 209 transitions, 3108 flow [2023-08-25 06:39:20,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3108, PETRI_PLACES=132, PETRI_TRANSITIONS=209} [2023-08-25 06:39:20,263 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2023-08-25 06:39:20,263 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 209 transitions, 3108 flow [2023-08-25 06:39:20,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 94.16666666666667) internal successors, (1695), 18 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:20,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:20,265 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:20,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:20,473 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,SelfDestructingSolverStorable9 [2023-08-25 06:39:20,473 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:20,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:20,474 INFO L85 PathProgramCache]: Analyzing trace with hash -204097382, now seen corresponding path program 6 times [2023-08-25 06:39:20,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:20,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287046694] [2023-08-25 06:39:20,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:20,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:20,661 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:20,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287046694] [2023-08-25 06:39:20,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287046694] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:20,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110328609] [2023-08-25 06:39:20,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:39:20,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:20,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:20,663 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:20,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-25 06:39:20,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-25 06:39:20,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:20,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:39:20,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:20,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:21,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110328609] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:21,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:21,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-25 06:39:21,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223157532] [2023-08-25 06:39:21,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:21,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:39:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:39:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:39:21,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-25 06:39:21,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 209 transitions, 3108 flow. Second operand has 16 states, 16 states have (on average 92.4375) internal successors, (1479), 16 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:21,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:21,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-25 06:39:21,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:22,113 INFO L124 PetriNetUnfolderBase]: 1044/2238 cut-off events. [2023-08-25 06:39:22,113 INFO L125 PetriNetUnfolderBase]: For 27255/27339 co-relation queries the response was YES. [2023-08-25 06:39:22,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13192 conditions, 2238 events. 1044/2238 cut-off events. For 27255/27339 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14775 event pairs, 30 based on Foata normal form. 58/2296 useless extension candidates. Maximal degree in co-relation 13150. Up to 643 conditions per place. [2023-08-25 06:39:22,142 INFO L140 encePairwiseOnDemand]: 223/231 looper letters, 160 selfloop transitions, 278 changer transitions 4/445 dead transitions. [2023-08-25 06:39:22,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 445 transitions, 7152 flow [2023-08-25 06:39:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 06:39:22,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 06:39:22,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2672 transitions. [2023-08-25 06:39:22,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131106988249845 [2023-08-25 06:39:22,149 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2672 transitions. [2023-08-25 06:39:22,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2672 transitions. [2023-08-25 06:39:22,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:22,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2672 transitions. [2023-08-25 06:39:22,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 95.42857142857143) internal successors, (2672), 28 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:22,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 231.0) internal successors, (6699), 29 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:22,164 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 231.0) internal successors, (6699), 29 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:22,165 INFO L175 Difference]: Start difference. First operand has 132 places, 209 transitions, 3108 flow. Second operand 28 states and 2672 transitions. [2023-08-25 06:39:22,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 445 transitions, 7152 flow [2023-08-25 06:39:22,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 445 transitions, 5834 flow, removed 548 selfloop flow, removed 9 redundant places. [2023-08-25 06:39:22,272 INFO L231 Difference]: Finished difference. Result has 164 places, 372 transitions, 5639 flow [2023-08-25 06:39:22,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=2433, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5639, PETRI_PLACES=164, PETRI_TRANSITIONS=372} [2023-08-25 06:39:22,273 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2023-08-25 06:39:22,273 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 372 transitions, 5639 flow [2023-08-25 06:39:22,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 92.4375) internal successors, (1479), 16 states have internal predecessors, (1479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:22,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:22,274 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:22,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-25 06:39:22,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:22,475 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:22,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:22,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1504850296, now seen corresponding path program 7 times [2023-08-25 06:39:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:22,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275011827] [2023-08-25 06:39:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:22,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:22,654 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:22,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275011827] [2023-08-25 06:39:22,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275011827] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:22,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510929351] [2023-08-25 06:39:22,655 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:39:22,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:22,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:22,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:22,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-25 06:39:22,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:22,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:39:22,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:22,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:23,073 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:23,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510929351] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:23,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:23,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-08-25 06:39:23,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488495773] [2023-08-25 06:39:23,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:23,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 06:39:23,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:23,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 06:39:23,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:39:23,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:23,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 372 transitions, 5639 flow. Second operand has 14 states, 14 states have (on average 94.07142857142857) internal successors, (1317), 14 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:23,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:23,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:23,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:23,942 INFO L124 PetriNetUnfolderBase]: 1127/2372 cut-off events. [2023-08-25 06:39:23,943 INFO L125 PetriNetUnfolderBase]: For 24621/24719 co-relation queries the response was YES. [2023-08-25 06:39:23,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13638 conditions, 2372 events. 1127/2372 cut-off events. For 24621/24719 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15748 event pairs, 91 based on Foata normal form. 96/2467 useless extension candidates. Maximal degree in co-relation 13590. Up to 728 conditions per place. [2023-08-25 06:39:23,972 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 200 selfloop transitions, 275 changer transitions 6/484 dead transitions. [2023-08-25 06:39:23,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 484 transitions, 7798 flow [2023-08-25 06:39:23,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 06:39:23,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 06:39:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1944 transitions. [2023-08-25 06:39:23,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42077922077922075 [2023-08-25 06:39:23,976 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1944 transitions. [2023-08-25 06:39:23,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1944 transitions. [2023-08-25 06:39:23,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:23,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1944 transitions. [2023-08-25 06:39:23,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 97.2) internal successors, (1944), 20 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:23,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:23,985 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:23,985 INFO L175 Difference]: Start difference. First operand has 164 places, 372 transitions, 5639 flow. Second operand 20 states and 1944 transitions. [2023-08-25 06:39:23,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 484 transitions, 7798 flow [2023-08-25 06:39:24,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 484 transitions, 7587 flow, removed 80 selfloop flow, removed 8 redundant places. [2023-08-25 06:39:24,128 INFO L231 Difference]: Finished difference. Result has 184 places, 417 transitions, 7110 flow [2023-08-25 06:39:24,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=7110, PETRI_PLACES=184, PETRI_TRANSITIONS=417} [2023-08-25 06:39:24,129 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 145 predicate places. [2023-08-25 06:39:24,129 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 417 transitions, 7110 flow [2023-08-25 06:39:24,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 94.07142857142857) internal successors, (1317), 14 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:24,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:24,130 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:24,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:24,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:24,330 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:24,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -84163234, now seen corresponding path program 8 times [2023-08-25 06:39:24,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:24,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329545157] [2023-08-25 06:39:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:24,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:24,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:24,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329545157] [2023-08-25 06:39:24,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329545157] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:24,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946015403] [2023-08-25 06:39:24,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:39:24,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:24,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:24,581 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:24,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-25 06:39:24,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:39:24,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:24,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:39:24,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:24,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:24,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:24,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946015403] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:24,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:24,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2023-08-25 06:39:24,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898514270] [2023-08-25 06:39:24,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:24,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-25 06:39:24,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-25 06:39:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-08-25 06:39:24,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:24,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 417 transitions, 7110 flow. Second operand has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:24,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:24,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:24,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:26,161 INFO L124 PetriNetUnfolderBase]: 1201/2565 cut-off events. [2023-08-25 06:39:26,161 INFO L125 PetriNetUnfolderBase]: For 34522/34627 co-relation queries the response was YES. [2023-08-25 06:39:26,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16400 conditions, 2565 events. 1201/2565 cut-off events. For 34522/34627 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 17516 event pairs, 66 based on Foata normal form. 116/2679 useless extension candidates. Maximal degree in co-relation 16348. Up to 639 conditions per place. [2023-08-25 06:39:26,195 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 180 selfloop transitions, 354 changer transitions 1/538 dead transitions. [2023-08-25 06:39:26,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 538 transitions, 9482 flow [2023-08-25 06:39:26,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-25 06:39:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-25 06:39:26,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3004 transitions. [2023-08-25 06:39:26,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41949448401061307 [2023-08-25 06:39:26,200 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3004 transitions. [2023-08-25 06:39:26,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3004 transitions. [2023-08-25 06:39:26,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:26,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3004 transitions. [2023-08-25 06:39:26,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 96.90322580645162) internal successors, (3004), 31 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:26,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 231.0) internal successors, (7392), 32 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:26,212 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 231.0) internal successors, (7392), 32 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:26,212 INFO L175 Difference]: Start difference. First operand has 184 places, 417 transitions, 7110 flow. Second operand 31 states and 3004 transitions. [2023-08-25 06:39:26,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 538 transitions, 9482 flow [2023-08-25 06:39:26,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 538 transitions, 9321 flow, removed 51 selfloop flow, removed 7 redundant places. [2023-08-25 06:39:26,408 INFO L231 Difference]: Finished difference. Result has 214 places, 453 transitions, 8685 flow [2023-08-25 06:39:26,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=6954, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=8685, PETRI_PLACES=214, PETRI_TRANSITIONS=453} [2023-08-25 06:39:26,409 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 175 predicate places. [2023-08-25 06:39:26,409 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 453 transitions, 8685 flow [2023-08-25 06:39:26,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 94.0) internal successors, (1410), 15 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:26,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:26,410 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:26,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-25 06:39:26,615 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,SelfDestructingSolverStorable12 [2023-08-25 06:39:26,616 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:26,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:26,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1715402594, now seen corresponding path program 9 times [2023-08-25 06:39:26,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:26,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390698726] [2023-08-25 06:39:26,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:26,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:26,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:26,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:26,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390698726] [2023-08-25 06:39:26,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390698726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:26,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800233539] [2023-08-25 06:39:26,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:39:26,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:26,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:26,800 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:26,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-25 06:39:26,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-25 06:39:26,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:26,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:39:26,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:26,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:27,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800233539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:27,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:27,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-08-25 06:39:27,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254837602] [2023-08-25 06:39:27,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:27,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-25 06:39:27,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-25 06:39:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-08-25 06:39:27,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-25 06:39:27,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 453 transitions, 8685 flow. Second operand has 14 states, 14 states have (on average 92.28571428571429) internal successors, (1292), 14 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:27,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:27,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-25 06:39:27,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:28,113 INFO L124 PetriNetUnfolderBase]: 1400/3002 cut-off events. [2023-08-25 06:39:28,113 INFO L125 PetriNetUnfolderBase]: For 48853/48967 co-relation queries the response was YES. [2023-08-25 06:39:28,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20755 conditions, 3002 events. 1400/3002 cut-off events. For 48853/48967 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 21261 event pairs, 34 based on Foata normal form. 42/3044 useless extension candidates. Maximal degree in co-relation 20696. Up to 803 conditions per place. [2023-08-25 06:39:28,147 INFO L140 encePairwiseOnDemand]: 223/231 looper letters, 179 selfloop transitions, 395 changer transitions 1/578 dead transitions. [2023-08-25 06:39:28,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 578 transitions, 11732 flow [2023-08-25 06:39:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-25 06:39:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-25 06:39:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1911 transitions. [2023-08-25 06:39:28,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41363636363636364 [2023-08-25 06:39:28,151 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1911 transitions. [2023-08-25 06:39:28,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1911 transitions. [2023-08-25 06:39:28,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:28,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1911 transitions. [2023-08-25 06:39:28,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.55) internal successors, (1911), 20 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:28,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:28,160 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:28,160 INFO L175 Difference]: Start difference. First operand has 214 places, 453 transitions, 8685 flow. Second operand 20 states and 1911 transitions. [2023-08-25 06:39:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 578 transitions, 11732 flow [2023-08-25 06:39:28,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 578 transitions, 11380 flow, removed 49 selfloop flow, removed 16 redundant places. [2023-08-25 06:39:28,526 INFO L231 Difference]: Finished difference. Result has 222 places, 528 transitions, 11420 flow [2023-08-25 06:39:28,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=8358, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11420, PETRI_PLACES=222, PETRI_TRANSITIONS=528} [2023-08-25 06:39:28,526 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 183 predicate places. [2023-08-25 06:39:28,526 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 528 transitions, 11420 flow [2023-08-25 06:39:28,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 92.28571428571429) internal successors, (1292), 14 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:28,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:28,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:28,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:28,727 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,SelfDestructingSolverStorable13 [2023-08-25 06:39:28,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:28,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 723396150, now seen corresponding path program 10 times [2023-08-25 06:39:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493975409] [2023-08-25 06:39:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:28,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493975409] [2023-08-25 06:39:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493975409] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128833999] [2023-08-25 06:39:28,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:39:28,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:28,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:28,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-25 06:39:29,012 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:39:29,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:29,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-25 06:39:29,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:29,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:29,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:29,331 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:29,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128833999] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:29,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:29,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2023-08-25 06:39:29,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732297468] [2023-08-25 06:39:29,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:29,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-25 06:39:29,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:29,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-25 06:39:29,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-08-25 06:39:29,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 231 [2023-08-25 06:39:29,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 528 transitions, 11420 flow. Second operand has 16 states, 16 states have (on average 93.75) internal successors, (1500), 16 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:29,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:29,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 231 [2023-08-25 06:39:29,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:30,461 INFO L124 PetriNetUnfolderBase]: 1425/3013 cut-off events. [2023-08-25 06:39:30,461 INFO L125 PetriNetUnfolderBase]: For 62262/62400 co-relation queries the response was YES. [2023-08-25 06:39:30,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23270 conditions, 3013 events. 1425/3013 cut-off events. For 62262/62400 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21037 event pairs, 180 based on Foata normal form. 104/3107 useless extension candidates. Maximal degree in co-relation 23205. Up to 1293 conditions per place. [2023-08-25 06:39:30,491 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 232 selfloop transitions, 345 changer transitions 4/584 dead transitions. [2023-08-25 06:39:30,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 584 transitions, 13358 flow [2023-08-25 06:39:30,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-25 06:39:30,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-25 06:39:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1750 transitions. [2023-08-25 06:39:30,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4208754208754209 [2023-08-25 06:39:30,494 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1750 transitions. [2023-08-25 06:39:30,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1750 transitions. [2023-08-25 06:39:30,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:30,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1750 transitions. [2023-08-25 06:39:30,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 97.22222222222223) internal successors, (1750), 18 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:30,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:30,502 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:30,502 INFO L175 Difference]: Start difference. First operand has 222 places, 528 transitions, 11420 flow. Second operand 18 states and 1750 transitions. [2023-08-25 06:39:30,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 584 transitions, 13358 flow [2023-08-25 06:39:30,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 584 transitions, 13198 flow, removed 32 selfloop flow, removed 7 redundant places. [2023-08-25 06:39:30,981 INFO L231 Difference]: Finished difference. Result has 237 places, 538 transitions, 12683 flow [2023-08-25 06:39:30,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=11233, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=330, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=12683, PETRI_PLACES=237, PETRI_TRANSITIONS=538} [2023-08-25 06:39:30,981 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2023-08-25 06:39:30,981 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 538 transitions, 12683 flow [2023-08-25 06:39:30,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 93.75) internal successors, (1500), 16 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:30,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:30,982 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:30,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:31,187 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,SelfDestructingSolverStorable14 [2023-08-25 06:39:31,188 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:31,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1844441007, now seen corresponding path program 11 times [2023-08-25 06:39:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:31,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335362866] [2023-08-25 06:39:31,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:31,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:31,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:31,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335362866] [2023-08-25 06:39:31,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335362866] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:31,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477351153] [2023-08-25 06:39:31,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:39:31,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:31,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:31,413 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:31,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-25 06:39:31,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 06:39:31,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:31,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:39:31,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:31,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:31,938 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:31,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477351153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:31,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:31,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2023-08-25 06:39:31,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700495080] [2023-08-25 06:39:31,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:31,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-25 06:39:31,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:31,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-25 06:39:31,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-08-25 06:39:31,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-25 06:39:31,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 538 transitions, 12683 flow. Second operand has 18 states, 18 states have (on average 92.33333333333333) internal successors, (1662), 18 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:31,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:31,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-25 06:39:31,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:33,471 INFO L124 PetriNetUnfolderBase]: 1683/3568 cut-off events. [2023-08-25 06:39:33,471 INFO L125 PetriNetUnfolderBase]: For 89517/89649 co-relation queries the response was YES. [2023-08-25 06:39:33,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29608 conditions, 3568 events. 1683/3568 cut-off events. For 89517/89649 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25951 event pairs, 45 based on Foata normal form. 120/3686 useless extension candidates. Maximal degree in co-relation 29540. Up to 1024 conditions per place. [2023-08-25 06:39:33,508 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 334 selfloop transitions, 428 changer transitions 3/768 dead transitions. [2023-08-25 06:39:33,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 768 transitions, 18482 flow [2023-08-25 06:39:33,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-25 06:39:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-25 06:39:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2862 transitions. [2023-08-25 06:39:33,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412987012987013 [2023-08-25 06:39:33,513 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2862 transitions. [2023-08-25 06:39:33,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2862 transitions. [2023-08-25 06:39:33,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:33,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2862 transitions. [2023-08-25 06:39:33,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 95.4) internal successors, (2862), 30 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:33,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 231.0) internal successors, (7161), 31 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:33,525 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 231.0) internal successors, (7161), 31 states have internal predecessors, (7161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:33,525 INFO L175 Difference]: Start difference. First operand has 237 places, 538 transitions, 12683 flow. Second operand 30 states and 2862 transitions. [2023-08-25 06:39:33,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 768 transitions, 18482 flow [2023-08-25 06:39:34,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 768 transitions, 18242 flow, removed 19 selfloop flow, removed 9 redundant places. [2023-08-25 06:39:34,246 INFO L231 Difference]: Finished difference. Result has 270 places, 654 transitions, 16976 flow [2023-08-25 06:39:34,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=12460, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=328, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16976, PETRI_PLACES=270, PETRI_TRANSITIONS=654} [2023-08-25 06:39:34,247 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 231 predicate places. [2023-08-25 06:39:34,247 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 654 transitions, 16976 flow [2023-08-25 06:39:34,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 92.33333333333333) internal successors, (1662), 18 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:34,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:34,247 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:34,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:34,453 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,SelfDestructingSolverStorable15 [2023-08-25 06:39:34,453 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:34,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 241455415, now seen corresponding path program 12 times [2023-08-25 06:39:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:34,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41123128] [2023-08-25 06:39:34,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:34,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:34,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:34,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41123128] [2023-08-25 06:39:34,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41123128] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702993898] [2023-08-25 06:39:34,783 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:39:34,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:34,785 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:34,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-25 06:39:34,904 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-25 06:39:34,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:34,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-25 06:39:34,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-25 06:39:35,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:35,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702993898] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:35,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:35,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-25 06:39:35,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041593047] [2023-08-25 06:39:35,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:35,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 06:39:35,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 06:39:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=393, Unknown=0, NotChecked=0, Total=506 [2023-08-25 06:39:35,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:39:35,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 654 transitions, 16976 flow. Second operand has 23 states, 23 states have (on average 87.1304347826087) internal successors, (2004), 23 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:35,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:35,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:39:35,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:37,973 INFO L124 PetriNetUnfolderBase]: 1908/4063 cut-off events. [2023-08-25 06:39:37,973 INFO L125 PetriNetUnfolderBase]: For 127124/127276 co-relation queries the response was YES. [2023-08-25 06:39:37,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36668 conditions, 4063 events. 1908/4063 cut-off events. For 127124/127276 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30560 event pairs, 34 based on Foata normal form. 103/4166 useless extension candidates. Maximal degree in co-relation 36588. Up to 1633 conditions per place. [2023-08-25 06:39:38,018 INFO L140 encePairwiseOnDemand]: 221/231 looper letters, 338 selfloop transitions, 476 changer transitions 17/834 dead transitions. [2023-08-25 06:39:38,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 834 transitions, 22012 flow [2023-08-25 06:39:38,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-25 06:39:38,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-25 06:39:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2260 transitions. [2023-08-25 06:39:38,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3913419913419913 [2023-08-25 06:39:38,031 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2260 transitions. [2023-08-25 06:39:38,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2260 transitions. [2023-08-25 06:39:38,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:38,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2260 transitions. [2023-08-25 06:39:38,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 90.4) internal successors, (2260), 25 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:38,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 231.0) internal successors, (6006), 26 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:38,046 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 231.0) internal successors, (6006), 26 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:38,046 INFO L175 Difference]: Start difference. First operand has 270 places, 654 transitions, 16976 flow. Second operand 25 states and 2260 transitions. [2023-08-25 06:39:38,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 834 transitions, 22012 flow [2023-08-25 06:39:38,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 834 transitions, 21832 flow, removed 74 selfloop flow, removed 4 redundant places. [2023-08-25 06:39:39,008 INFO L231 Difference]: Finished difference. Result has 297 places, 749 transitions, 21133 flow [2023-08-25 06:39:39,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=16770, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=21133, PETRI_PLACES=297, PETRI_TRANSITIONS=749} [2023-08-25 06:39:39,009 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 258 predicate places. [2023-08-25 06:39:39,009 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 749 transitions, 21133 flow [2023-08-25 06:39:39,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 87.1304347826087) internal successors, (2004), 23 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:39,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:39,009 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:39,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:39,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-25 06:39:39,215 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:39,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash 238492211, now seen corresponding path program 13 times [2023-08-25 06:39:39,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:39,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167503301] [2023-08-25 06:39:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:39,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:39,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167503301] [2023-08-25 06:39:39,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167503301] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:39,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664148025] [2023-08-25 06:39:39,531 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:39:39,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:39,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:39,533 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:39,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-25 06:39:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:39,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-25 06:39:39,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:40,285 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:41,156 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:41,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664148025] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:41,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:41,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 21 [2023-08-25 06:39:41,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122098848] [2023-08-25 06:39:41,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:41,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:39:41,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:41,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:39:41,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:39:41,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:39:41,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 749 transitions, 21133 flow. Second operand has 22 states, 22 states have (on average 87.04545454545455) internal successors, (1915), 22 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:41,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:41,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:39:41,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:44,092 INFO L124 PetriNetUnfolderBase]: 2264/4804 cut-off events. [2023-08-25 06:39:44,092 INFO L125 PetriNetUnfolderBase]: For 186104/186295 co-relation queries the response was YES. [2023-08-25 06:39:44,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47214 conditions, 4804 events. 2264/4804 cut-off events. For 186104/186295 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 37449 event pairs, 33 based on Foata normal form. 166/4969 useless extension candidates. Maximal degree in co-relation 47125. Up to 1661 conditions per place. [2023-08-25 06:39:44,142 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 422 selfloop transitions, 558 changer transitions 10/993 dead transitions. [2023-08-25 06:39:44,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 993 transitions, 28755 flow [2023-08-25 06:39:44,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-25 06:39:44,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-25 06:39:44,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2439 transitions. [2023-08-25 06:39:44,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39105339105339104 [2023-08-25 06:39:44,145 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2439 transitions. [2023-08-25 06:39:44,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2439 transitions. [2023-08-25 06:39:44,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:44,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2439 transitions. [2023-08-25 06:39:44,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 90.33333333333333) internal successors, (2439), 27 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:44,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 231.0) internal successors, (6468), 28 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:44,154 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 231.0) internal successors, (6468), 28 states have internal predecessors, (6468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:44,154 INFO L175 Difference]: Start difference. First operand has 297 places, 749 transitions, 21133 flow. Second operand 27 states and 2439 transitions. [2023-08-25 06:39:44,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 993 transitions, 28755 flow [2023-08-25 06:39:45,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 993 transitions, 28502 flow, removed 109 selfloop flow, removed 5 redundant places. [2023-08-25 06:39:45,524 INFO L231 Difference]: Finished difference. Result has 330 places, 874 transitions, 27015 flow [2023-08-25 06:39:45,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=20938, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=27015, PETRI_PLACES=330, PETRI_TRANSITIONS=874} [2023-08-25 06:39:45,525 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 291 predicate places. [2023-08-25 06:39:45,525 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 874 transitions, 27015 flow [2023-08-25 06:39:45,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 87.04545454545455) internal successors, (1915), 22 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:45,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:45,526 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:45,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:45,727 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,SelfDestructingSolverStorable17 [2023-08-25 06:39:45,727 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:45,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2020722903, now seen corresponding path program 14 times [2023-08-25 06:39:45,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:45,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239639351] [2023-08-25 06:39:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:46,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239639351] [2023-08-25 06:39:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239639351] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020632175] [2023-08-25 06:39:46,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:39:46,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:46,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:46,019 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:46,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-25 06:39:46,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:39:46,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:46,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-25 06:39:46,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:46,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:46,711 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:46,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020632175] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:46,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:46,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 9 [2023-08-25 06:39:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585932848] [2023-08-25 06:39:46,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-25 06:39:46,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:46,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-25 06:39:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-08-25 06:39:46,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 231 [2023-08-25 06:39:46,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 874 transitions, 27015 flow. Second operand has 11 states, 11 states have (on average 99.9090909090909) internal successors, (1099), 11 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:46,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:46,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 231 [2023-08-25 06:39:46,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:48,835 INFO L124 PetriNetUnfolderBase]: 2829/6074 cut-off events. [2023-08-25 06:39:48,836 INFO L125 PetriNetUnfolderBase]: For 292171/292429 co-relation queries the response was YES. [2023-08-25 06:39:48,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64772 conditions, 6074 events. 2829/6074 cut-off events. For 292171/292429 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 50281 event pairs, 169 based on Foata normal form. 110/6172 useless extension candidates. Maximal degree in co-relation 64672. Up to 2551 conditions per place. [2023-08-25 06:39:48,918 INFO L140 encePairwiseOnDemand]: 227/231 looper letters, 734 selfloop transitions, 282 changer transitions 173/1204 dead transitions. [2023-08-25 06:39:48,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 1204 transitions, 39949 flow [2023-08-25 06:39:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-25 06:39:48,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-25 06:39:48,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1052 transitions. [2023-08-25 06:39:48,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45541125541125543 [2023-08-25 06:39:48,921 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1052 transitions. [2023-08-25 06:39:48,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1052 transitions. [2023-08-25 06:39:48,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:48,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1052 transitions. [2023-08-25 06:39:48,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 105.2) internal successors, (1052), 10 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:48,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 231.0) internal successors, (2541), 11 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:48,925 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 231.0) internal successors, (2541), 11 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:48,925 INFO L175 Difference]: Start difference. First operand has 330 places, 874 transitions, 27015 flow. Second operand 10 states and 1052 transitions. [2023-08-25 06:39:48,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 1204 transitions, 39949 flow [2023-08-25 06:39:51,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 1204 transitions, 39545 flow, removed 88 selfloop flow, removed 14 redundant places. [2023-08-25 06:39:51,704 INFO L231 Difference]: Finished difference. Result has 330 places, 880 transitions, 28147 flow [2023-08-25 06:39:51,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=26645, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=28147, PETRI_PLACES=330, PETRI_TRANSITIONS=880} [2023-08-25 06:39:51,705 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 291 predicate places. [2023-08-25 06:39:51,705 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 880 transitions, 28147 flow [2023-08-25 06:39:51,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 99.9090909090909) internal successors, (1099), 11 states have internal predecessors, (1099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:51,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:51,705 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:51,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:51,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:51,906 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:51,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:51,906 INFO L85 PathProgramCache]: Analyzing trace with hash -24728617, now seen corresponding path program 15 times [2023-08-25 06:39:51,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:51,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262201695] [2023-08-25 06:39:51,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:51,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262201695] [2023-08-25 06:39:52,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262201695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:52,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884986564] [2023-08-25 06:39:52,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:39:52,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:52,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:52,209 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:52,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-25 06:39:52,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 06:39:52,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:52,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 06:39:52,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:52,630 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:52,971 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:52,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884986564] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:52,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:52,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 19 [2023-08-25 06:39:52,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491155406] [2023-08-25 06:39:52,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:52,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:39:52,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:52,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:39:52,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:39:52,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:39:52,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 880 transitions, 28147 flow. Second operand has 20 states, 20 states have (on average 87.35) internal successors, (1747), 20 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:52,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:52,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:39:52,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:39:55,502 INFO L124 PetriNetUnfolderBase]: 2561/5614 cut-off events. [2023-08-25 06:39:55,502 INFO L125 PetriNetUnfolderBase]: For 281476/281761 co-relation queries the response was YES. [2023-08-25 06:39:55,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60787 conditions, 5614 events. 2561/5614 cut-off events. For 281476/281761 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 46633 event pairs, 23 based on Foata normal form. 260/5873 useless extension candidates. Maximal degree in co-relation 60683. Up to 1938 conditions per place. [2023-08-25 06:39:55,583 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 411 selfloop transitions, 569 changer transitions 52/1035 dead transitions. [2023-08-25 06:39:55,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1035 transitions, 34160 flow [2023-08-25 06:39:55,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-25 06:39:55,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-25 06:39:55,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1734 transitions. [2023-08-25 06:39:55,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3950786056049214 [2023-08-25 06:39:55,586 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1734 transitions. [2023-08-25 06:39:55,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1734 transitions. [2023-08-25 06:39:55,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:39:55,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1734 transitions. [2023-08-25 06:39:55,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 91.26315789473684) internal successors, (1734), 19 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:55,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 231.0) internal successors, (4620), 20 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:55,593 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 231.0) internal successors, (4620), 20 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:55,593 INFO L175 Difference]: Start difference. First operand has 330 places, 880 transitions, 28147 flow. Second operand 19 states and 1734 transitions. [2023-08-25 06:39:55,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1035 transitions, 34160 flow [2023-08-25 06:39:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 1035 transitions, 33825 flow, removed 86 selfloop flow, removed 10 redundant places. [2023-08-25 06:39:57,819 INFO L231 Difference]: Finished difference. Result has 341 places, 905 transitions, 31104 flow [2023-08-25 06:39:57,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=27454, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=528, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=31104, PETRI_PLACES=341, PETRI_TRANSITIONS=905} [2023-08-25 06:39:57,820 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 302 predicate places. [2023-08-25 06:39:57,820 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 905 transitions, 31104 flow [2023-08-25 06:39:57,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 87.35) internal successors, (1747), 20 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:57,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:39:57,821 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:39:57,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-25 06:39:58,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:58,026 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:39:58,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:39:58,027 INFO L85 PathProgramCache]: Analyzing trace with hash 868284633, now seen corresponding path program 16 times [2023-08-25 06:39:58,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:39:58,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326436927] [2023-08-25 06:39:58,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:39:58,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:39:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:39:58,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:58,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:39:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326436927] [2023-08-25 06:39:58,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326436927] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:39:58,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42058556] [2023-08-25 06:39:58,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:39:58,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:39:58,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:39:58,353 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:39:58,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-25 06:39:58,454 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:39:58,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:39:58,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 06:39:58,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:39:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:58,590 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:39:58,979 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:39:58,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42058556] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:39:58,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:39:58,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-25 06:39:58,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539854915] [2023-08-25 06:39:58,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:39:58,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:39:58,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:39:58,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:39:58,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:39:58,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-25 06:39:58,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 905 transitions, 31104 flow. Second operand has 21 states, 21 states have (on average 91.76190476190476) internal successors, (1927), 21 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:39:58,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:39:58,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-25 06:39:58,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:40:02,433 INFO L124 PetriNetUnfolderBase]: 2891/6330 cut-off events. [2023-08-25 06:40:02,433 INFO L125 PetriNetUnfolderBase]: For 355272/355587 co-relation queries the response was YES. [2023-08-25 06:40:02,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71427 conditions, 6330 events. 2891/6330 cut-off events. For 355272/355587 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 53096 event pairs, 59 based on Foata normal form. 264/6592 useless extension candidates. Maximal degree in co-relation 71326. Up to 1938 conditions per place. [2023-08-25 06:40:02,511 INFO L140 encePairwiseOnDemand]: 223/231 looper letters, 481 selfloop transitions, 688 changer transitions 1/1173 dead transitions. [2023-08-25 06:40:02,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 1173 transitions, 41010 flow [2023-08-25 06:40:02,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-25 06:40:02,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-25 06:40:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2657 transitions. [2023-08-25 06:40:02,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41079158936301796 [2023-08-25 06:40:02,514 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2657 transitions. [2023-08-25 06:40:02,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2657 transitions. [2023-08-25 06:40:02,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:40:02,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2657 transitions. [2023-08-25 06:40:02,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 94.89285714285714) internal successors, (2657), 28 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:02,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 231.0) internal successors, (6699), 29 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:02,520 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 231.0) internal successors, (6699), 29 states have internal predecessors, (6699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:02,520 INFO L175 Difference]: Start difference. First operand has 341 places, 905 transitions, 31104 flow. Second operand 28 states and 2657 transitions. [2023-08-25 06:40:02,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 1173 transitions, 41010 flow [2023-08-25 06:40:05,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1173 transitions, 40223 flow, removed 148 selfloop flow, removed 18 redundant places. [2023-08-25 06:40:05,056 INFO L231 Difference]: Finished difference. Result has 355 places, 1027 transitions, 37996 flow [2023-08-25 06:40:05,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=30368, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=898, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=565, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=37996, PETRI_PLACES=355, PETRI_TRANSITIONS=1027} [2023-08-25 06:40:05,057 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 316 predicate places. [2023-08-25 06:40:05,057 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 1027 transitions, 37996 flow [2023-08-25 06:40:05,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 91.76190476190476) internal successors, (1927), 21 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:05,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:40:05,058 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:40:05,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-25 06:40:05,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:05,262 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:40:05,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:40:05,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1474923545, now seen corresponding path program 17 times [2023-08-25 06:40:05,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:40:05,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618116719] [2023-08-25 06:40:05,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:40:05,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:40:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:40:05,817 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:05,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:40:05,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618116719] [2023-08-25 06:40:05,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618116719] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:40:05,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755175501] [2023-08-25 06:40:05,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:40:05,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:05,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:40:05,819 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:40:05,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-25 06:40:05,926 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 06:40:05,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:40:05,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 06:40:05,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:40:06,322 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:06,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:40:06,764 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:06,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755175501] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:40:06,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:40:06,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 27 [2023-08-25 06:40:06,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502669041] [2023-08-25 06:40:06,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:40:06,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-25 06:40:06,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:40:06,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-25 06:40:06,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2023-08-25 06:40:06,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:40:06,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 1027 transitions, 37996 flow. Second operand has 27 states, 27 states have (on average 86.77777777777777) internal successors, (2343), 27 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:06,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:40:06,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:40:06,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:40:15,547 INFO L124 PetriNetUnfolderBase]: 3787/8138 cut-off events. [2023-08-25 06:40:15,548 INFO L125 PetriNetUnfolderBase]: For 513774/514204 co-relation queries the response was YES. [2023-08-25 06:40:15,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96368 conditions, 8138 events. 3787/8138 cut-off events. For 513774/514204 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 69788 event pairs, 54 based on Foata normal form. 376/8514 useless extension candidates. Maximal degree in co-relation 96266. Up to 2446 conditions per place. [2023-08-25 06:40:15,765 INFO L140 encePairwiseOnDemand]: 223/231 looper letters, 568 selfloop transitions, 978 changer transitions 8/1557 dead transitions. [2023-08-25 06:40:15,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1557 transitions, 56980 flow [2023-08-25 06:40:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-25 06:40:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-25 06:40:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 4226 transitions. [2023-08-25 06:40:15,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892419637100488 [2023-08-25 06:40:15,769 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 4226 transitions. [2023-08-25 06:40:15,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 4226 transitions. [2023-08-25 06:40:15,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:40:15,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 4226 transitions. [2023-08-25 06:40:15,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 89.91489361702128) internal successors, (4226), 47 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:15,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 231.0) internal successors, (11088), 48 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:15,782 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 231.0) internal successors, (11088), 48 states have internal predecessors, (11088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:15,782 INFO L175 Difference]: Start difference. First operand has 355 places, 1027 transitions, 37996 flow. Second operand 47 states and 4226 transitions. [2023-08-25 06:40:15,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1557 transitions, 56980 flow [2023-08-25 06:40:20,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 1557 transitions, 56642 flow, removed 114 selfloop flow, removed 11 redundant places. [2023-08-25 06:40:20,299 INFO L231 Difference]: Finished difference. Result has 407 places, 1389 transitions, 54362 flow [2023-08-25 06:40:20,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=37727, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1027, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=54362, PETRI_PLACES=407, PETRI_TRANSITIONS=1389} [2023-08-25 06:40:20,300 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 368 predicate places. [2023-08-25 06:40:20,300 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 1389 transitions, 54362 flow [2023-08-25 06:40:20,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 86.77777777777777) internal successors, (2343), 27 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:20,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:40:20,301 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:40:20,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-25 06:40:20,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:20,509 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:40:20,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:40:20,510 INFO L85 PathProgramCache]: Analyzing trace with hash 993484077, now seen corresponding path program 18 times [2023-08-25 06:40:20,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:40:20,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84013554] [2023-08-25 06:40:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:40:20,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:40:20,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:40:20,939 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:20,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:40:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84013554] [2023-08-25 06:40:20,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84013554] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:40:20,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789196718] [2023-08-25 06:40:20,940 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:40:20,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:20,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:40:20,941 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:40:20,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-25 06:40:21,061 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 06:40:21,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:40:21,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 06:40:21,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:40:21,328 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:21,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:40:21,994 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:21,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789196718] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:40:21,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:40:21,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2023-08-25 06:40:21,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529917633] [2023-08-25 06:40:21,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:40:21,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 06:40:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:40:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 06:40:21,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-08-25 06:40:21,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-25 06:40:21,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 1389 transitions, 54362 flow. Second operand has 23 states, 23 states have (on average 91.91304347826087) internal successors, (2114), 23 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:21,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:40:21,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-25 06:40:21,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:40:28,873 INFO L124 PetriNetUnfolderBase]: 4393/9412 cut-off events. [2023-08-25 06:40:28,874 INFO L125 PetriNetUnfolderBase]: For 722235/722905 co-relation queries the response was YES. [2023-08-25 06:40:28,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120394 conditions, 9412 events. 4393/9412 cut-off events. For 722235/722905 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 82090 event pairs, 51 based on Foata normal form. 580/9992 useless extension candidates. Maximal degree in co-relation 120275. Up to 2717 conditions per place. [2023-08-25 06:40:29,043 INFO L140 encePairwiseOnDemand]: 223/231 looper letters, 749 selfloop transitions, 992 changer transitions 37/1781 dead transitions. [2023-08-25 06:40:29,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 1781 transitions, 71201 flow [2023-08-25 06:40:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-25 06:40:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-25 06:40:29,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3236 transitions. [2023-08-25 06:40:29,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4120193531958238 [2023-08-25 06:40:29,048 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3236 transitions. [2023-08-25 06:40:29,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3236 transitions. [2023-08-25 06:40:29,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:40:29,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3236 transitions. [2023-08-25 06:40:29,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 95.17647058823529) internal successors, (3236), 34 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:29,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 231.0) internal successors, (8085), 35 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:29,060 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 231.0) internal successors, (8085), 35 states have internal predecessors, (8085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:29,060 INFO L175 Difference]: Start difference. First operand has 407 places, 1389 transitions, 54362 flow. Second operand 34 states and 3236 transitions. [2023-08-25 06:40:29,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 1781 transitions, 71201 flow [2023-08-25 06:40:37,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 1781 transitions, 69497 flow, removed 825 selfloop flow, removed 9 redundant places. [2023-08-25 06:40:37,516 INFO L231 Difference]: Finished difference. Result has 447 places, 1545 transitions, 63882 flow [2023-08-25 06:40:37,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=52940, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=817, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=63882, PETRI_PLACES=447, PETRI_TRANSITIONS=1545} [2023-08-25 06:40:37,518 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 408 predicate places. [2023-08-25 06:40:37,519 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 1545 transitions, 63882 flow [2023-08-25 06:40:37,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 91.91304347826087) internal successors, (2114), 23 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:37,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:40:37,519 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:40:37,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-25 06:40:37,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:37,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:40:37,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:40:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash -653264459, now seen corresponding path program 19 times [2023-08-25 06:40:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:40:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983903036] [2023-08-25 06:40:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:40:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:40:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:40:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:40:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983903036] [2023-08-25 06:40:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983903036] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:40:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015470549] [2023-08-25 06:40:38,242 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:40:38,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:38,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:40:38,245 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:40:38,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-25 06:40:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:40:38,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:40:38,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:40:38,638 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:38,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:40:40,278 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:40,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015470549] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:40:40,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:40:40,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 24 [2023-08-25 06:40:40,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692159067] [2023-08-25 06:40:40,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:40:40,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 06:40:40,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:40:40,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 06:40:40,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2023-08-25 06:40:40,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:40:40,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 1545 transitions, 63882 flow. Second operand has 24 states, 24 states have (on average 86.91666666666667) internal successors, (2086), 24 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:40,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:40:40,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:40:40,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:40:49,469 INFO L124 PetriNetUnfolderBase]: 4376/9409 cut-off events. [2023-08-25 06:40:49,469 INFO L125 PetriNetUnfolderBase]: For 784117/784843 co-relation queries the response was YES. [2023-08-25 06:40:49,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123486 conditions, 9409 events. 4376/9409 cut-off events. For 784117/784843 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 81872 event pairs, 60 based on Foata normal form. 596/10005 useless extension candidates. Maximal degree in co-relation 123350. Up to 4331 conditions per place. [2023-08-25 06:40:49,619 INFO L140 encePairwiseOnDemand]: 223/231 looper letters, 690 selfloop transitions, 980 changer transitions 6/1679 dead transitions. [2023-08-25 06:40:49,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1679 transitions, 70662 flow [2023-08-25 06:40:49,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-25 06:40:49,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-25 06:40:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2071 transitions. [2023-08-25 06:40:49,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38979860718991155 [2023-08-25 06:40:49,622 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2071 transitions. [2023-08-25 06:40:49,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2071 transitions. [2023-08-25 06:40:49,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:40:49,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2071 transitions. [2023-08-25 06:40:49,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 90.04347826086956) internal successors, (2071), 23 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:49,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 231.0) internal successors, (5544), 24 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:49,629 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 231.0) internal successors, (5544), 24 states have internal predecessors, (5544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:49,629 INFO L175 Difference]: Start difference. First operand has 447 places, 1545 transitions, 63882 flow. Second operand 23 states and 2071 transitions. [2023-08-25 06:40:49,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1679 transitions, 70662 flow [2023-08-25 06:40:57,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 1679 transitions, 70178 flow, removed 162 selfloop flow, removed 13 redundant places. [2023-08-25 06:40:57,607 INFO L231 Difference]: Finished difference. Result has 461 places, 1577 transitions, 68366 flow [2023-08-25 06:40:57,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=63182, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=937, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=68366, PETRI_PLACES=461, PETRI_TRANSITIONS=1577} [2023-08-25 06:40:57,609 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 422 predicate places. [2023-08-25 06:40:57,609 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 1577 transitions, 68366 flow [2023-08-25 06:40:57,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 86.91666666666667) internal successors, (2086), 24 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:57,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:40:57,610 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:40:57,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-25 06:40:57,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:57,810 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:40:57,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:40:57,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1972177029, now seen corresponding path program 20 times [2023-08-25 06:40:57,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:40:57,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096958027] [2023-08-25 06:40:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:40:57,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:40:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:40:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:40:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096958027] [2023-08-25 06:40:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096958027] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:40:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082003257] [2023-08-25 06:40:58,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:40:58,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:40:58,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:40:58,125 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:40:58,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-25 06:40:58,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:40:58,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:40:58,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 06:40:58,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:40:58,553 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:58,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:40:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:40:58,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082003257] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:40:58,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:40:58,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 21 [2023-08-25 06:40:58,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359959350] [2023-08-25 06:40:58,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:40:58,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:40:58,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:40:58,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:40:58,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:40:58,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:40:58,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 1577 transitions, 68366 flow. Second operand has 21 states, 21 states have (on average 86.71428571428571) internal successors, (1821), 21 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:40:58,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:40:58,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:40:58,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:41:09,980 INFO L124 PetriNetUnfolderBase]: 6337/12965 cut-off events. [2023-08-25 06:41:09,980 INFO L125 PetriNetUnfolderBase]: For 1202484/1203420 co-relation queries the response was YES. [2023-08-25 06:41:10,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179705 conditions, 12965 events. 6337/12965 cut-off events. For 1202484/1203420 co-relation queries the response was YES. Maximal size of possible extension queue 697. Compared 113610 event pairs, 432 based on Foata normal form. 798/13665 useless extension candidates. Maximal degree in co-relation 179564. Up to 3163 conditions per place. [2023-08-25 06:41:10,216 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 724 selfloop transitions, 1883 changer transitions 40/2650 dead transitions. [2023-08-25 06:41:10,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 2650 transitions, 111637 flow [2023-08-25 06:41:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-08-25 06:41:10,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-08-25 06:41:10,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 6367 transitions. [2023-08-25 06:41:10,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38820803609536003 [2023-08-25 06:41:10,220 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 6367 transitions. [2023-08-25 06:41:10,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 6367 transitions. [2023-08-25 06:41:10,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:41:10,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 6367 transitions. [2023-08-25 06:41:10,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 89.67605633802818) internal successors, (6367), 71 states have internal predecessors, (6367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:10,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 231.0) internal successors, (16632), 72 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:10,240 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 231.0) internal successors, (16632), 72 states have internal predecessors, (16632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:10,240 INFO L175 Difference]: Start difference. First operand has 461 places, 1577 transitions, 68366 flow. Second operand 71 states and 6367 transitions. [2023-08-25 06:41:10,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 2650 transitions, 111637 flow [2023-08-25 06:41:23,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 2650 transitions, 111307 flow, removed 72 selfloop flow, removed 13 redundant places. [2023-08-25 06:41:23,985 INFO L231 Difference]: Finished difference. Result has 550 places, 2387 transitions, 107892 flow [2023-08-25 06:41:23,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=68113, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=107892, PETRI_PLACES=550, PETRI_TRANSITIONS=2387} [2023-08-25 06:41:23,987 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 511 predicate places. [2023-08-25 06:41:23,987 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 2387 transitions, 107892 flow [2023-08-25 06:41:23,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 86.71428571428571) internal successors, (1821), 21 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:23,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:41:23,987 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:41:23,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-25 06:41:24,188 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,SelfDestructingSolverStorable24 [2023-08-25 06:41:24,188 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:41:24,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:41:24,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1861742309, now seen corresponding path program 21 times [2023-08-25 06:41:24,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:41:24,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943900880] [2023-08-25 06:41:24,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:41:24,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:41:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:41:24,504 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:41:24,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:41:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943900880] [2023-08-25 06:41:24,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943900880] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:41:24,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018693166] [2023-08-25 06:41:24,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:41:24,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:41:24,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:41:24,509 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:41:24,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-25 06:41:24,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 06:41:24,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:41:24,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 06:41:24,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:41:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:41:24,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:41:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:41:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018693166] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:41:25,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:41:25,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 06:41:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693830356] [2023-08-25 06:41:25,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:41:25,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:41:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:41:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:41:25,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:41:25,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 231 [2023-08-25 06:41:25,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 2387 transitions, 107892 flow. Second operand has 21 states, 21 states have (on average 90.0952380952381) internal successors, (1892), 21 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:25,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:41:25,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 231 [2023-08-25 06:41:25,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:41:39,632 INFO L124 PetriNetUnfolderBase]: 6936/14348 cut-off events. [2023-08-25 06:41:39,632 INFO L125 PetriNetUnfolderBase]: For 1480820/1481932 co-relation queries the response was YES. [2023-08-25 06:41:39,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210460 conditions, 14348 events. 6936/14348 cut-off events. For 1480820/1481932 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 128782 event pairs, 65 based on Foata normal form. 909/15257 useless extension candidates. Maximal degree in co-relation 210284. Up to 4743 conditions per place. [2023-08-25 06:41:39,903 INFO L140 encePairwiseOnDemand]: 221/231 looper letters, 975 selfloop transitions, 1816 changer transitions 48/2842 dead transitions. [2023-08-25 06:41:39,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 2842 transitions, 129731 flow [2023-08-25 06:41:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-25 06:41:39,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-25 06:41:39,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4190 transitions. [2023-08-25 06:41:39,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4030784030784031 [2023-08-25 06:41:39,906 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4190 transitions. [2023-08-25 06:41:39,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4190 transitions. [2023-08-25 06:41:39,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:41:39,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4190 transitions. [2023-08-25 06:41:39,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 93.11111111111111) internal successors, (4190), 45 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:39,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 231.0) internal successors, (10626), 46 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:39,919 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 231.0) internal successors, (10626), 46 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:41:39,919 INFO L175 Difference]: Start difference. First operand has 550 places, 2387 transitions, 107892 flow. Second operand 45 states and 4190 transitions. [2023-08-25 06:41:39,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 2842 transitions, 129731 flow [2023-08-25 06:42:00,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 2842 transitions, 127388 flow, removed 1088 selfloop flow, removed 11 redundant places. [2023-08-25 06:42:01,018 INFO L231 Difference]: Finished difference. Result has 602 places, 2652 transitions, 123445 flow [2023-08-25 06:42:01,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=105947, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1554, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=123445, PETRI_PLACES=602, PETRI_TRANSITIONS=2652} [2023-08-25 06:42:01,021 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 563 predicate places. [2023-08-25 06:42:01,021 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 2652 transitions, 123445 flow [2023-08-25 06:42:01,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 90.0952380952381) internal successors, (1892), 21 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:42:01,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:42:01,021 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:42:01,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-25 06:42:01,221 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,SelfDestructingSolverStorable25 [2023-08-25 06:42:01,222 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:42:01,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:42:01,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1700971765, now seen corresponding path program 22 times [2023-08-25 06:42:01,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:42:01,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982873076] [2023-08-25 06:42:01,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:42:01,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:42:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:42:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:42:01,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:42:01,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982873076] [2023-08-25 06:42:01,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982873076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:42:01,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043694326] [2023-08-25 06:42:01,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:42:01,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:42:01,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:42:01,485 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:42:01,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-25 06:42:01,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:42:01,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:42:01,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:42:01,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:42:01,830 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:42:01,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:42:02,221 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:42:02,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043694326] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:42:02,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:42:02,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2023-08-25 06:42:02,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630548754] [2023-08-25 06:42:02,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:42:02,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-25 06:42:02,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:42:02,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-25 06:42:02,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2023-08-25 06:42:02,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:42:02,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 2652 transitions, 123445 flow. Second operand has 20 states, 20 states have (on average 86.9) internal successors, (1738), 20 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:42:02,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:42:02,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:42:02,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:42:17,467 INFO L124 PetriNetUnfolderBase]: 7836/15994 cut-off events. [2023-08-25 06:42:17,467 INFO L125 PetriNetUnfolderBase]: For 1785550/1786880 co-relation queries the response was YES. [2023-08-25 06:42:17,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241861 conditions, 15994 events. 7836/15994 cut-off events. For 1785550/1786880 co-relation queries the response was YES. Maximal size of possible extension queue 781. Compared 143604 event pairs, 442 based on Foata normal form. 1156/17145 useless extension candidates. Maximal degree in co-relation 241667. Up to 4480 conditions per place. [2023-08-25 06:42:17,832 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 1095 selfloop transitions, 2054 changer transitions 46/3198 dead transitions. [2023-08-25 06:42:17,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 3198 transitions, 152002 flow [2023-08-25 06:42:17,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-25 06:42:17,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-25 06:42:17,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2610 transitions. [2023-08-25 06:42:17,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38961038961038963 [2023-08-25 06:42:17,835 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2610 transitions. [2023-08-25 06:42:17,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2610 transitions. [2023-08-25 06:42:17,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:42:17,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2610 transitions. [2023-08-25 06:42:17,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 90.0) internal successors, (2610), 29 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:42:17,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 231.0) internal successors, (6930), 30 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:42:17,841 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 231.0) internal successors, (6930), 30 states have internal predecessors, (6930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:42:17,841 INFO L175 Difference]: Start difference. First operand has 602 places, 2652 transitions, 123445 flow. Second operand 29 states and 2610 transitions. [2023-08-25 06:42:17,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 3198 transitions, 152002 flow [2023-08-25 06:42:45,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 3198 transitions, 151057 flow, removed 287 selfloop flow, removed 15 redundant places. [2023-08-25 06:42:45,720 INFO L231 Difference]: Finished difference. Result has 621 places, 2987 transitions, 144669 flow [2023-08-25 06:42:45,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=122280, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1709, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=830, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=144669, PETRI_PLACES=621, PETRI_TRANSITIONS=2987} [2023-08-25 06:42:45,722 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 582 predicate places. [2023-08-25 06:42:45,723 INFO L495 AbstractCegarLoop]: Abstraction has has 621 places, 2987 transitions, 144669 flow [2023-08-25 06:42:45,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 86.9) internal successors, (1738), 20 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:42:45,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:42:45,723 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:42:45,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-25 06:42:45,923 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,SelfDestructingSolverStorable26 [2023-08-25 06:42:45,924 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:42:45,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:42:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1769066437, now seen corresponding path program 23 times [2023-08-25 06:42:45,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:42:45,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226793633] [2023-08-25 06:42:45,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:42:45,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:42:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:42:46,211 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:42:46,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:42:46,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226793633] [2023-08-25 06:42:46,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226793633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:42:46,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941277600] [2023-08-25 06:42:46,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-25 06:42:46,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:42:46,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:42:46,213 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:42:46,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-25 06:42:46,311 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-25 06:42:46,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:42:46,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:42:46,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:42:46,554 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:42:46,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:42:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:42:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941277600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:42:47,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:42:47,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2023-08-25 06:42:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049884140] [2023-08-25 06:42:47,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:42:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:42:47,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:42:47,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:42:47,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:42:47,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:42:47,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 621 places, 2987 transitions, 144669 flow. Second operand has 22 states, 22 states have (on average 87.13636363636364) internal successors, (1917), 22 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:42:47,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:42:47,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:42:47,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:43:05,416 INFO L124 PetriNetUnfolderBase]: 8035/16453 cut-off events. [2023-08-25 06:43:05,416 INFO L125 PetriNetUnfolderBase]: For 1974238/1975470 co-relation queries the response was YES. [2023-08-25 06:43:05,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260454 conditions, 16453 events. 8035/16453 cut-off events. For 1974238/1975470 co-relation queries the response was YES. Maximal size of possible extension queue 800. Compared 148607 event pairs, 260 based on Foata normal form. 1078/17517 useless extension candidates. Maximal degree in co-relation 260254. Up to 3787 conditions per place. [2023-08-25 06:43:05,798 INFO L140 encePairwiseOnDemand]: 224/231 looper letters, 946 selfloop transitions, 2348 changer transitions 6/3303 dead transitions. [2023-08-25 06:43:05,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 3303 transitions, 162453 flow [2023-08-25 06:43:05,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-25 06:43:05,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-25 06:43:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4044 transitions. [2023-08-25 06:43:05,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.389033189033189 [2023-08-25 06:43:05,804 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4044 transitions. [2023-08-25 06:43:05,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4044 transitions. [2023-08-25 06:43:05,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:43:05,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4044 transitions. [2023-08-25 06:43:05,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 89.86666666666666) internal successors, (4044), 45 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:43:05,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 231.0) internal successors, (10626), 46 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:43:05,816 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 231.0) internal successors, (10626), 46 states have internal predecessors, (10626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:43:05,816 INFO L175 Difference]: Start difference. First operand has 621 places, 2987 transitions, 144669 flow. Second operand 45 states and 4044 transitions. [2023-08-25 06:43:05,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 3303 transitions, 162453 flow [2023-08-25 06:43:35,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 3303 transitions, 161464 flow, removed 297 selfloop flow, removed 15 redundant places. [2023-08-25 06:43:35,371 INFO L231 Difference]: Finished difference. Result has 648 places, 3115 transitions, 157817 flow [2023-08-25 06:43:35,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=143413, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2977, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=737, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=157817, PETRI_PLACES=648, PETRI_TRANSITIONS=3115} [2023-08-25 06:43:35,373 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 609 predicate places. [2023-08-25 06:43:35,373 INFO L495 AbstractCegarLoop]: Abstraction has has 648 places, 3115 transitions, 157817 flow [2023-08-25 06:43:35,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 87.13636363636364) internal successors, (1917), 22 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:43:35,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:43:35,374 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:43:35,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-25 06:43:35,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:43:35,579 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:43:35,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:43:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1404254449, now seen corresponding path program 24 times [2023-08-25 06:43:35,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:43:35,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399934749] [2023-08-25 06:43:35,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:43:35,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:43:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:43:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:43:36,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:43:36,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399934749] [2023-08-25 06:43:36,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399934749] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:43:36,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844780352] [2023-08-25 06:43:36,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-25 06:43:36,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:43:36,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:43:36,017 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:43:36,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-25 06:43:36,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-25 06:43:36,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:43:36,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-25 06:43:36,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:43:36,417 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:43:36,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:43:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:43:36,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844780352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:43:36,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:43:36,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2023-08-25 06:43:36,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698329191] [2023-08-25 06:43:36,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:43:36,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-25 06:43:36,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:43:36,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-25 06:43:36,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2023-08-25 06:43:36,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 231 [2023-08-25 06:43:36,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 3115 transitions, 157817 flow. Second operand has 24 states, 24 states have (on average 92.04166666666667) internal successors, (2209), 24 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:43:36,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:43:36,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 231 [2023-08-25 06:43:36,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:44:06,800 INFO L124 PetriNetUnfolderBase]: 9896/20348 cut-off events. [2023-08-25 06:44:06,800 INFO L125 PetriNetUnfolderBase]: For 2648925/2650675 co-relation queries the response was YES. [2023-08-25 06:44:07,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336654 conditions, 20348 events. 9896/20348 cut-off events. For 2648925/2650675 co-relation queries the response was YES. Maximal size of possible extension queue 947. Compared 188585 event pairs, 150 based on Foata normal form. 1210/21558 useless extension candidates. Maximal degree in co-relation 336456. Up to 4871 conditions per place. [2023-08-25 06:44:07,328 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 920 selfloop transitions, 3131 changer transitions 65/4119 dead transitions. [2023-08-25 06:44:07,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 4119 transitions, 213184 flow [2023-08-25 06:44:07,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-08-25 06:44:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-08-25 06:44:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 7208 transitions. [2023-08-25 06:44:07,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105718842560948 [2023-08-25 06:44:07,333 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 7208 transitions. [2023-08-25 06:44:07,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 7208 transitions. [2023-08-25 06:44:07,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:44:07,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 7208 transitions. [2023-08-25 06:44:07,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 94.84210526315789) internal successors, (7208), 76 states have internal predecessors, (7208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:44:07,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 231.0) internal successors, (17787), 77 states have internal predecessors, (17787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:44:07,352 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 231.0) internal successors, (17787), 77 states have internal predecessors, (17787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:44:07,352 INFO L175 Difference]: Start difference. First operand has 648 places, 3115 transitions, 157817 flow. Second operand 76 states and 7208 transitions. [2023-08-25 06:44:07,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 4119 transitions, 213184 flow [2023-08-25 06:44:50,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 4119 transitions, 210039 flow, removed 235 selfloop flow, removed 24 redundant places. [2023-08-25 06:44:50,706 INFO L231 Difference]: Finished difference. Result has 720 places, 3833 transitions, 204754 flow [2023-08-25 06:44:50,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=155084, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2432, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=204754, PETRI_PLACES=720, PETRI_TRANSITIONS=3833} [2023-08-25 06:44:50,708 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 681 predicate places. [2023-08-25 06:44:50,708 INFO L495 AbstractCegarLoop]: Abstraction has has 720 places, 3833 transitions, 204754 flow [2023-08-25 06:44:50,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 92.04166666666667) internal successors, (2209), 24 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:44:50,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:44:50,709 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:44:50,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-25 06:44:50,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-25 06:44:50,915 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:44:50,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:44:50,915 INFO L85 PathProgramCache]: Analyzing trace with hash -337930983, now seen corresponding path program 25 times [2023-08-25 06:44:50,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:44:50,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213234422] [2023-08-25 06:44:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:44:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:44:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:44:51,185 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:44:51,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:44:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213234422] [2023-08-25 06:44:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213234422] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:44:51,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882426391] [2023-08-25 06:44:51,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-25 06:44:51,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:44:51,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:44:51,186 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:44:51,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-25 06:44:51,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:44:51,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-25 06:44:51,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:44:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:44:51,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:44:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:44:51,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882426391] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:44:51,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:44:51,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-08-25 06:44:51,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500709047] [2023-08-25 06:44:51,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:44:51,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-25 06:44:51,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:44:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-25 06:44:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-08-25 06:44:51,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:44:51,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 3833 transitions, 204754 flow. Second operand has 21 states, 21 states have (on average 87.0) internal successors, (1827), 21 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:44:51,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:44:51,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:44:51,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:45:20,405 INFO L124 PetriNetUnfolderBase]: 10628/21734 cut-off events. [2023-08-25 06:45:20,405 INFO L125 PetriNetUnfolderBase]: For 2987014/2988792 co-relation queries the response was YES. [2023-08-25 06:45:20,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374913 conditions, 21734 events. 10628/21734 cut-off events. For 2987014/2988792 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 202903 event pairs, 99 based on Foata normal form. 1464/23198 useless extension candidates. Maximal degree in co-relation 374699. Up to 5243 conditions per place. [2023-08-25 06:45:20,928 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 841 selfloop transitions, 3585 changer transitions 31/4460 dead transitions. [2023-08-25 06:45:20,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 760 places, 4460 transitions, 241369 flow [2023-08-25 06:45:20,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-25 06:45:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-25 06:45:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 3792 transitions. [2023-08-25 06:45:20,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3908472479901051 [2023-08-25 06:45:20,931 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 3792 transitions. [2023-08-25 06:45:20,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 3792 transitions. [2023-08-25 06:45:20,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:45:20,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 3792 transitions. [2023-08-25 06:45:20,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 90.28571428571429) internal successors, (3792), 42 states have internal predecessors, (3792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:45:20,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 231.0) internal successors, (9933), 43 states have internal predecessors, (9933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:45:20,938 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 231.0) internal successors, (9933), 43 states have internal predecessors, (9933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:45:20,938 INFO L175 Difference]: Start difference. First operand has 720 places, 3833 transitions, 204754 flow. Second operand 42 states and 3792 transitions. [2023-08-25 06:45:20,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 760 places, 4460 transitions, 241369 flow [2023-08-25 06:46:21,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 4460 transitions, 237807 flow, removed 1337 selfloop flow, removed 36 redundant places. [2023-08-25 06:46:21,982 INFO L231 Difference]: Finished difference. Result has 733 places, 4287 transitions, 237451 flow [2023-08-25 06:46:21,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=201568, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=237451, PETRI_PLACES=733, PETRI_TRANSITIONS=4287} [2023-08-25 06:46:21,985 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 694 predicate places. [2023-08-25 06:46:21,985 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 4287 transitions, 237451 flow [2023-08-25 06:46:21,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 87.0) internal successors, (1827), 21 states have internal predecessors, (1827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:46:21,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:46:21,986 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:46:21,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-25 06:46:22,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:46:22,191 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:46:22,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:46:22,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1767566003, now seen corresponding path program 26 times [2023-08-25 06:46:22,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:46:22,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284819279] [2023-08-25 06:46:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:46:22,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:46:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:46:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:46:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:46:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284819279] [2023-08-25 06:46:22,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284819279] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:46:22,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073844632] [2023-08-25 06:46:22,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-25 06:46:22,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:46:22,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:46:22,513 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:46:22,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-25 06:46:22,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-25 06:46:22,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:46:22,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-25 06:46:22,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:46:22,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:46:22,929 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:46:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:46:23,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073844632] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:46:23,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:46:23,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 22 [2023-08-25 06:46:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870927886] [2023-08-25 06:46:23,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:46:23,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:46:23,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:46:23,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:46:23,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:46:23,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:46:23,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 4287 transitions, 237451 flow. Second operand has 22 states, 22 states have (on average 87.13636363636364) internal successors, (1917), 22 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:46:23,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:46:23,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:46:23,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:46:57,194 INFO L124 PetriNetUnfolderBase]: 10924/22539 cut-off events. [2023-08-25 06:46:57,194 INFO L125 PetriNetUnfolderBase]: For 3374910/3377056 co-relation queries the response was YES. [2023-08-25 06:46:57,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402661 conditions, 22539 events. 10924/22539 cut-off events. For 3374910/3377056 co-relation queries the response was YES. Maximal size of possible extension queue 1060. Compared 213492 event pairs, 126 based on Foata normal form. 1822/24361 useless extension candidates. Maximal degree in co-relation 402446. Up to 5475 conditions per place. [2023-08-25 06:46:57,754 INFO L140 encePairwiseOnDemand]: 223/231 looper letters, 1332 selfloop transitions, 3208 changer transitions 3/4546 dead transitions. [2023-08-25 06:46:57,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 772 places, 4546 transitions, 257250 flow [2023-08-25 06:46:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-25 06:46:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-25 06:46:57,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3586 transitions. [2023-08-25 06:46:57,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2023-08-25 06:46:57,757 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3586 transitions. [2023-08-25 06:46:57,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3586 transitions. [2023-08-25 06:46:57,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:46:57,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3586 transitions. [2023-08-25 06:46:57,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 89.65) internal successors, (3586), 40 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:46:57,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 231.0) internal successors, (9471), 41 states have internal predecessors, (9471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:46:57,766 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 231.0) internal successors, (9471), 41 states have internal predecessors, (9471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:46:57,767 INFO L175 Difference]: Start difference. First operand has 733 places, 4287 transitions, 237451 flow. Second operand 40 states and 3586 transitions. [2023-08-25 06:46:57,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 772 places, 4546 transitions, 257250 flow [2023-08-25 06:48:15,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 4546 transitions, 256486 flow, removed 261 selfloop flow, removed 14 redundant places. [2023-08-25 06:48:16,147 INFO L231 Difference]: Finished difference. Result has 770 places, 4414 transitions, 257372 flow [2023-08-25 06:48:16,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=236762, PETRI_DIFFERENCE_MINUEND_PLACES=719, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3082, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=257372, PETRI_PLACES=770, PETRI_TRANSITIONS=4414} [2023-08-25 06:48:16,151 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 731 predicate places. [2023-08-25 06:48:16,151 INFO L495 AbstractCegarLoop]: Abstraction has has 770 places, 4414 transitions, 257372 flow [2023-08-25 06:48:16,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 87.13636363636364) internal successors, (1917), 22 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:48:16,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:48:16,152 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:48:16,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-25 06:48:16,359 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,SelfDestructingSolverStorable30 [2023-08-25 06:48:16,359 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:48:16,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:48:16,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1888873675, now seen corresponding path program 27 times [2023-08-25 06:48:16,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:48:16,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137608748] [2023-08-25 06:48:16,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:48:16,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:48:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:48:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:48:16,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:48:16,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137608748] [2023-08-25 06:48:16,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137608748] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:48:16,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410864665] [2023-08-25 06:48:16,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-25 06:48:16,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:48:16,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:48:16,673 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:48:16,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-25 06:48:16,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-25 06:48:16,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:48:16,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-25 06:48:16,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:48:17,182 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:48:17,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:48:17,443 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:48:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410864665] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:48:17,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:48:17,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2023-08-25 06:48:17,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486775072] [2023-08-25 06:48:17,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:48:17,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-25 06:48:17,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:48:17,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-25 06:48:17,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-08-25 06:48:17,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 231 [2023-08-25 06:48:17,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 4414 transitions, 257372 flow. Second operand has 23 states, 23 states have (on average 90.04347826086956) internal successors, (2071), 23 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:48:17,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:48:17,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 231 [2023-08-25 06:48:17,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:48:54,186 INFO L124 PetriNetUnfolderBase]: 11104/22948 cut-off events. [2023-08-25 06:48:54,187 INFO L125 PetriNetUnfolderBase]: For 3836695/3838861 co-relation queries the response was YES. [2023-08-25 06:48:54,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428125 conditions, 22948 events. 11104/22948 cut-off events. For 3836695/3838861 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 218867 event pairs, 94 based on Foata normal form. 1841/24789 useless extension candidates. Maximal degree in co-relation 427901. Up to 5577 conditions per place. [2023-08-25 06:48:54,774 INFO L140 encePairwiseOnDemand]: 221/231 looper letters, 764 selfloop transitions, 3877 changer transitions 39/4683 dead transitions. [2023-08-25 06:48:54,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 835 places, 4683 transitions, 275861 flow [2023-08-25 06:48:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-08-25 06:48:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-08-25 06:48:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 6116 transitions. [2023-08-25 06:48:54,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40115440115440115 [2023-08-25 06:48:54,779 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 6116 transitions. [2023-08-25 06:48:54,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 6116 transitions. [2023-08-25 06:48:54,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:48:54,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 6116 transitions. [2023-08-25 06:48:54,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 92.66666666666667) internal successors, (6116), 66 states have internal predecessors, (6116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:48:54,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 231.0) internal successors, (15477), 67 states have internal predecessors, (15477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:48:54,795 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 231.0) internal successors, (15477), 67 states have internal predecessors, (15477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:48:54,795 INFO L175 Difference]: Start difference. First operand has 770 places, 4414 transitions, 257372 flow. Second operand 66 states and 6116 transitions. [2023-08-25 06:48:54,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 835 places, 4683 transitions, 275861 flow [2023-08-25 06:50:33,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 4683 transitions, 275256 flow, removed 182 selfloop flow, removed 19 redundant places. [2023-08-25 06:50:33,532 INFO L231 Difference]: Finished difference. Result has 829 places, 4500 transitions, 272179 flow [2023-08-25 06:50:33,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=256768, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3775, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=614, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=272179, PETRI_PLACES=829, PETRI_TRANSITIONS=4500} [2023-08-25 06:50:33,534 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 790 predicate places. [2023-08-25 06:50:33,534 INFO L495 AbstractCegarLoop]: Abstraction has has 829 places, 4500 transitions, 272179 flow [2023-08-25 06:50:33,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 90.04347826086956) internal successors, (2071), 23 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:50:33,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 06:50:33,535 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 06:50:33,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-25 06:50:33,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:50:33,736 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-25 06:50:33,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 06:50:33,736 INFO L85 PathProgramCache]: Analyzing trace with hash -783967555, now seen corresponding path program 28 times [2023-08-25 06:50:33,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 06:50:33,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559309671] [2023-08-25 06:50:33,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 06:50:33,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 06:50:33,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 06:50:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:50:33,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 06:50:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559309671] [2023-08-25 06:50:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559309671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-25 06:50:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060077570] [2023-08-25 06:50:33,976 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-25 06:50:33,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:50:33,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 06:50:33,977 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-25 06:50:33,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-25 06:50:34,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-25 06:50:34,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-25 06:50:34,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-25 06:50:34,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-25 06:50:34,446 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:50:34,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-25 06:50:34,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 06:50:34,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060077570] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-25 06:50:34,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-25 06:50:34,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 22 [2023-08-25 06:50:34,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845236938] [2023-08-25 06:50:34,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-25 06:50:34,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-25 06:50:34,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 06:50:34,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-25 06:50:34,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2023-08-25 06:50:34,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 231 [2023-08-25 06:50:34,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 4500 transitions, 272179 flow. Second operand has 22 states, 22 states have (on average 86.68181818181819) internal successors, (1907), 22 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:50:34,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 06:50:34,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 231 [2023-08-25 06:50:34,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 06:51:20,996 INFO L124 PetriNetUnfolderBase]: 12271/24952 cut-off events. [2023-08-25 06:51:20,997 INFO L125 PetriNetUnfolderBase]: For 4591739/4594337 co-relation queries the response was YES. [2023-08-25 06:51:21,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486979 conditions, 24952 events. 12271/24952 cut-off events. For 4591739/4594337 co-relation queries the response was YES. Maximal size of possible extension queue 1165. Compared 237473 event pairs, 719 based on Foata normal form. 2298/27241 useless extension candidates. Maximal degree in co-relation 486742. Up to 7063 conditions per place. [2023-08-25 06:51:22,115 INFO L140 encePairwiseOnDemand]: 222/231 looper letters, 1171 selfloop transitions, 4055 changer transitions 39/5268 dead transitions. [2023-08-25 06:51:22,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 5268 transitions, 323965 flow [2023-08-25 06:51:22,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-25 06:51:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-25 06:51:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4306 transitions. [2023-08-25 06:51:22,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38834776334776333 [2023-08-25 06:51:22,119 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4306 transitions. [2023-08-25 06:51:22,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4306 transitions. [2023-08-25 06:51:22,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 06:51:22,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4306 transitions. [2023-08-25 06:51:22,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 89.70833333333333) internal successors, (4306), 48 states have internal predecessors, (4306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 231.0) internal successors, (11319), 49 states have internal predecessors, (11319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,128 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 231.0) internal successors, (11319), 49 states have internal predecessors, (11319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 06:51:22,128 INFO L175 Difference]: Start difference. First operand has 829 places, 4500 transitions, 272179 flow. Second operand 48 states and 4306 transitions. [2023-08-25 06:51:22,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 5268 transitions, 323965 flow Received shutdown request... [2023-08-25 06:52:46,057 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 06:52:46,057 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-25 06:52:46,221 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (26 of 27 remaining) [2023-08-25 06:52:46,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-25 06:52:46,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-25 06:52:46,422 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-25 06:52:46,423 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (25 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (24 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (23 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (22 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (21 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (20 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (19 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (18 of 27 remaining) [2023-08-25 06:52:46,424 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (17 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (14 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (12 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (11 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 27 remaining) [2023-08-25 06:52:46,425 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONDATA_RACE (8 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONDATA_RACE (7 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONDATA_RACE (6 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONDATA_RACE (5 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONDATA_RACE (4 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONDATA_RACE (3 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONDATA_RACE (2 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONDATA_RACE (1 of 27 remaining) [2023-08-25 06:52:46,426 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4ASSERT_VIOLATIONDATA_RACE (0 of 27 remaining) [2023-08-25 06:52:46,427 INFO L445 BasicCegarLoop]: Path program histogram: [28, 2, 1, 1, 1] [2023-08-25 06:52:46,431 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 06:52:46,431 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 06:52:46,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 06:52:46 BasicIcfg [2023-08-25 06:52:46,433 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 06:52:46,433 INFO L158 Benchmark]: Toolchain (without parser) took 818596.11ms. Allocated memory was 339.7MB in the beginning and 8.1GB in the end (delta: 7.8GB). Free memory was 315.9MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-08-25 06:52:46,434 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory was 317.4MB in the beginning and 317.3MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 06:52:46,434 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.85ms. Allocated memory is still 339.7MB. Free memory was 315.4MB in the beginning and 304.4MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-25 06:52:46,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.18ms. Allocated memory is still 339.7MB. Free memory was 304.4MB in the beginning and 302.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 06:52:46,434 INFO L158 Benchmark]: Boogie Preprocessor took 33.36ms. Allocated memory is still 339.7MB. Free memory was 302.9MB in the beginning and 301.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 06:52:46,434 INFO L158 Benchmark]: RCFGBuilder took 494.88ms. Allocated memory is still 339.7MB. Free memory was 301.3MB in the beginning and 280.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-25 06:52:46,435 INFO L158 Benchmark]: TraceAbstraction took 817857.08ms. Allocated memory was 339.7MB in the beginning and 8.1GB in the end (delta: 7.8GB). Free memory was 280.0MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2023-08-25 06:52:46,436 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory was 317.4MB in the beginning and 317.3MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 176.85ms. Allocated memory is still 339.7MB. Free memory was 315.4MB in the beginning and 304.4MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.18ms. Allocated memory is still 339.7MB. Free memory was 304.4MB in the beginning and 302.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 33.36ms. Allocated memory is still 339.7MB. Free memory was 302.9MB in the beginning and 301.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 494.88ms. Allocated memory is still 339.7MB. Free memory was 301.3MB in the beginning and 280.5MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 817857.08ms. Allocated memory was 339.7MB in the beginning and 8.1GB in the end (delta: 7.8GB). Free memory was 280.0MB in the beginning and 4.3GB in the end (delta: -4.0GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 112 PlacesBefore, 39 PlacesAfterwards, 111 TransitionsBefore, 36 TransitionsAfterwards, 1490 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 109 TotalNumberOfCompositions, 4802 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2989, independent: 2796, independent conditional: 0, independent unconditional: 2796, dependent: 193, dependent conditional: 0, dependent unconditional: 193, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 891, independent: 869, independent conditional: 0, independent unconditional: 869, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2989, independent: 1927, independent conditional: 0, independent unconditional: 1927, dependent: 171, dependent conditional: 0, dependent unconditional: 171, unknown: 891, unknown conditional: 0, unknown unconditional: 891] , Statistics on independence cache: Total cache size (in pairs): 134, Positive cache size: 121, Positive conditional cache size: 0, Positive unconditional cache size: 121, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 43]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 52]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 54]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that there are no data races Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 148 locations, 27 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: 817.8s, OverallIterations: 33, TraceHistogramMax: 4, PathProgramHistogramMax: 28, EmptinessCheckTime: 0.0s, AutomataDifference: 780.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3220 SdHoareTripleChecker+Valid, 19.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3220 mSDsluCounter, 443 SdHoareTripleChecker+Invalid, 17.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 311 mSDsCounter, 1018 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16498 IncrementalHoareTripleChecker+Invalid, 17516 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1018 mSolverCounterUnsat, 132 mSDtfsCounter, 16498 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2582 GetRequests, 1475 SyntacticMatches, 34 SemanticMatches, 1073 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 15049 ImplicationChecksByTransitivity, 41.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272179occurred in iteration=32, InterpolantAutomatonStates: 873, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 25.0s InterpolantComputationTime, 1569 NumberOfCodeBlocks, 1569 NumberOfCodeBlocksAsserted, 106 NumberOfCheckSat, 2236 ConstructedInterpolants, 1 QuantifiedInterpolants, 26909 SizeOfPredicates, 375 NumberOfNonLiveVariables, 4950 ConjunctsInSsa, 401 ConjunctsInUnsatCore, 89 InterpolantComputations, 6 PerfectInterpolantSequences, 232/1288 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