/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 18:44:13,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 18:44:13,775 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 18:44:13,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 18:44:13,779 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 18:44:13,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 18:44:13,806 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 18:44:13,806 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 18:44:13,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 18:44:13,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 18:44:13,811 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 18:44:13,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 18:44:13,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 18:44:13,813 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 18:44:13,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 18:44:13,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 18:44:13,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 18:44:13,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 18:44:13,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 18:44:13,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 18:44:13,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 18:44:13,814 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 18:44:13,814 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 18:44:13,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 18:44:13,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 18:44:13,815 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 18:44:13,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 18:44:13,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:44:13,815 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 18:44:13,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 18:44:13,816 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 18:44:13,816 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 18:44:13,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 18:44:13,817 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 18:44:13,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 18:44:13,817 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 18:44:14,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 18:44:14,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 18:44:14,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 18:44:14,076 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 18:44:14,077 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 18:44:14,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-25 18:44:15,126 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 18:44:15,343 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 18:44:15,344 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-25 18:44:15,353 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28143f9b/a51a00b60af847c29d8c40ddc501e23e/FLAG54847c717 [2023-08-25 18:44:15,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28143f9b/a51a00b60af847c29d8c40ddc501e23e [2023-08-25 18:44:15,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 18:44:15,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 18:44:15,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 18:44:15,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 18:44:15,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 18:44:15,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:44:15" (1/1) ... [2023-08-25 18:44:15,683 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628e54c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:15, skipping insertion in model container [2023-08-25 18:44:15,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 06:44:15" (1/1) ... [2023-08-25 18:44:15,737 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 18:44:16,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:44:16,026 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 18:44:16,050 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [236] [2023-08-25 18:44:16,052 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-25 18:44:16,080 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 18:44:16,112 INFO L206 MainTranslator]: Completed translation [2023-08-25 18:44:16,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16 WrapperNode [2023-08-25 18:44:16,113 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 18:44:16,114 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 18:44:16,114 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 18:44:16,114 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 18:44:16,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,148 INFO L138 Inliner]: procedures = 165, calls = 43, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 183 [2023-08-25 18:44:16,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 18:44:16,149 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 18:44:16,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 18:44:16,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 18:44:16,155 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,158 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,158 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,162 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,163 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,167 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 18:44:16,167 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 18:44:16,167 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 18:44:16,168 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 18:44:16,168 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (1/1) ... [2023-08-25 18:44:16,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 18:44:16,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 18:44:16,217 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 18:44:16,222 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 18:44:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 18:44:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 18:44:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 18:44:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 18:44:16,240 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-25 18:44:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-25 18:44:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 18:44:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 18:44:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 18:44:16,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 18:44:16,242 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 18:44:16,325 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 18:44:16,326 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 18:44:16,629 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 18:44:16,636 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 18:44:16,636 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-25 18:44:16,638 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:44:16 BoogieIcfgContainer [2023-08-25 18:44:16,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 18:44:16,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 18:44:16,640 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 18:44:16,642 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 18:44:16,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 06:44:15" (1/3) ... [2023-08-25 18:44:16,642 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7199b8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:44:16, skipping insertion in model container [2023-08-25 18:44:16,642 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 06:44:16" (2/3) ... [2023-08-25 18:44:16,643 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7199b8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 06:44:16, skipping insertion in model container [2023-08-25 18:44:16,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 06:44:16" (3/3) ... [2023-08-25 18:44:16,643 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-08-25 18:44:16,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 18:44:16,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-25 18:44:16,662 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 18:44:16,796 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-25 18:44:16,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 218 transitions, 441 flow [2023-08-25 18:44:16,894 INFO L124 PetriNetUnfolderBase]: 11/220 cut-off events. [2023-08-25 18:44:16,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:44:16,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 220 events. 11/220 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 256 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-08-25 18:44:16,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 218 transitions, 441 flow [2023-08-25 18:44:16,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 216 transitions, 435 flow [2023-08-25 18:44:16,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 18:44:16,921 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 216 transitions, 435 flow [2023-08-25 18:44:16,926 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 216 transitions, 435 flow [2023-08-25 18:44:16,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 216 transitions, 435 flow [2023-08-25 18:44:16,979 INFO L124 PetriNetUnfolderBase]: 11/216 cut-off events. [2023-08-25 18:44:16,979 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:44:16,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 216 events. 11/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 248 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2023-08-25 18:44:16,987 INFO L119 LiptonReduction]: Number of co-enabled transitions 14484 [2023-08-25 18:44:21,140 INFO L134 LiptonReduction]: Checked pairs total: 40029 [2023-08-25 18:44:21,140 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-08-25 18:44:21,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 18:44:21,161 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;@75b78e85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 18:44:21,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-25 18:44:21,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 18:44:21,166 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-25 18:44:21,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:44:21,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:21,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-25 18:44:21,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:21,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1465505727, now seen corresponding path program 1 times [2023-08-25 18:44:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:21,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269322297] [2023-08-25 18:44:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:21,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:21,346 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 18:44:21,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:21,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269322297] [2023-08-25 18:44:21,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269322297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:21,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:21,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:21,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824026926] [2023-08-25 18:44:21,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:21,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:21,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:21,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 424 [2023-08-25 18:44:21,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:21,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 424 [2023-08-25 18:44:21,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:21,601 INFO L124 PetriNetUnfolderBase]: 486/1349 cut-off events. [2023-08-25 18:44:21,601 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 18:44:21,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2378 conditions, 1349 events. 486/1349 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9172 event pairs, 63 based on Foata normal form. 93/1157 useless extension candidates. Maximal degree in co-relation 2369. Up to 523 conditions per place. [2023-08-25 18:44:21,609 INFO L140 encePairwiseOnDemand]: 417/424 looper letters, 66 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-08-25 18:44:21,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 89 transitions, 319 flow [2023-08-25 18:44:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:21,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2023-08-25 18:44:21,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267295597484277 [2023-08-25 18:44:21,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2023-08-25 18:44:21,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2023-08-25 18:44:21,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:21,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2023-08-25 18:44:21,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,632 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,633 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 127 flow. Second operand 3 states and 670 transitions. [2023-08-25 18:44:21,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 89 transitions, 319 flow [2023-08-25 18:44:21,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 89 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 18:44:21,637 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 140 flow [2023-08-25 18:44:21,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2023-08-25 18:44:21,640 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2023-08-25 18:44:21,640 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 140 flow [2023-08-25 18:44:21,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:21,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:21,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 18:44:21,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:21,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:21,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1756077037, now seen corresponding path program 1 times [2023-08-25 18:44:21,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:21,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160389780] [2023-08-25 18:44:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:21,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:21,673 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 18:44:21,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:21,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160389780] [2023-08-25 18:44:21,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160389780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:21,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:21,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:21,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553307522] [2023-08-25 18:44:21,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:21,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:21,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:21,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:21,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:21,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 424 [2023-08-25 18:44:21,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:21,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 424 [2023-08-25 18:44:21,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:21,811 INFO L124 PetriNetUnfolderBase]: 705/1674 cut-off events. [2023-08-25 18:44:21,811 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-25 18:44:21,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 1674 events. 705/1674 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 10383 event pairs, 624 based on Foata normal form. 0/1318 useless extension candidates. Maximal degree in co-relation 3251. Up to 1391 conditions per place. [2023-08-25 18:44:21,816 INFO L140 encePairwiseOnDemand]: 418/424 looper letters, 65 selfloop transitions, 5 changer transitions 0/84 dead transitions. [2023-08-25 18:44:21,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 332 flow [2023-08-25 18:44:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 637 transitions. [2023-08-25 18:44:21,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5007861635220126 [2023-08-25 18:44:21,818 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 637 transitions. [2023-08-25 18:44:21,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 637 transitions. [2023-08-25 18:44:21,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:21,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 637 transitions. [2023-08-25 18:44:21,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,822 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 140 flow. Second operand 3 states and 637 transitions. [2023-08-25 18:44:21,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 332 flow [2023-08-25 18:44:21,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 84 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 18:44:21,824 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 172 flow [2023-08-25 18:44:21,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-25 18:44:21,825 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2023-08-25 18:44:21,825 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 172 flow [2023-08-25 18:44:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:21,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:21,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 18:44:21,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:21,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:21,826 INFO L85 PathProgramCache]: Analyzing trace with hash -538009984, now seen corresponding path program 1 times [2023-08-25 18:44:21,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:21,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682543278] [2023-08-25 18:44:21,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:21,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:21,889 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 18:44:21,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:21,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682543278] [2023-08-25 18:44:21,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682543278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:21,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:21,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:21,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232977363] [2023-08-25 18:44:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:21,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:21,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:21,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:21,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 424 [2023-08-25 18:44:21,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:21,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:21,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 424 [2023-08-25 18:44:21,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:22,152 INFO L124 PetriNetUnfolderBase]: 915/2357 cut-off events. [2023-08-25 18:44:22,153 INFO L125 PetriNetUnfolderBase]: For 100/128 co-relation queries the response was YES. [2023-08-25 18:44:22,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 2357 events. 915/2357 cut-off events. For 100/128 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17370 event pairs, 95 based on Foata normal form. 14/1805 useless extension candidates. Maximal degree in co-relation 4508. Up to 1006 conditions per place. [2023-08-25 18:44:22,162 INFO L140 encePairwiseOnDemand]: 419/424 looper letters, 72 selfloop transitions, 4 changer transitions 0/97 dead transitions. [2023-08-25 18:44:22,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 396 flow [2023-08-25 18:44:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:22,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:22,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-08-25 18:44:22,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188679245283019 [2023-08-25 18:44:22,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-08-25 18:44:22,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-08-25 18:44:22,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:22,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-08-25 18:44:22,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,169 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 172 flow. Second operand 3 states and 660 transitions. [2023-08-25 18:44:22,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 396 flow [2023-08-25 18:44:22,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 18:44:22,174 INFO L231 Difference]: Finished difference. Result has 68 places, 67 transitions, 192 flow [2023-08-25 18:44:22,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=68, PETRI_TRANSITIONS=67} [2023-08-25 18:44:22,176 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 6 predicate places. [2023-08-25 18:44:22,178 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 67 transitions, 192 flow [2023-08-25 18:44:22,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:22,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:22,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 18:44:22,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:22,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:22,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1704976290, now seen corresponding path program 1 times [2023-08-25 18:44:22,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:22,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280278800] [2023-08-25 18:44:22,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:22,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:22,229 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 18:44:22,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:22,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280278800] [2023-08-25 18:44:22,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280278800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:22,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:22,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:22,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444061519] [2023-08-25 18:44:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:22,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:22,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:22,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 424 [2023-08-25 18:44:22,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:22,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 424 [2023-08-25 18:44:22,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:22,423 INFO L124 PetriNetUnfolderBase]: 742/2155 cut-off events. [2023-08-25 18:44:22,424 INFO L125 PetriNetUnfolderBase]: For 177/203 co-relation queries the response was YES. [2023-08-25 18:44:22,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4098 conditions, 2155 events. 742/2155 cut-off events. For 177/203 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 16569 event pairs, 615 based on Foata normal form. 12/1738 useless extension candidates. Maximal degree in co-relation 4086. Up to 1509 conditions per place. [2023-08-25 18:44:22,431 INFO L140 encePairwiseOnDemand]: 420/424 looper letters, 58 selfloop transitions, 4 changer transitions 0/87 dead transitions. [2023-08-25 18:44:22,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 87 transitions, 362 flow [2023-08-25 18:44:22,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:22,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-25 18:44:22,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5062893081761006 [2023-08-25 18:44:22,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-25 18:44:22,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-25 18:44:22,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:22,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-25 18:44:22,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,438 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 192 flow. Second operand 3 states and 644 transitions. [2023-08-25 18:44:22,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 87 transitions, 362 flow [2023-08-25 18:44:22,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 354 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 18:44:22,442 INFO L231 Difference]: Finished difference. Result has 69 places, 69 transitions, 208 flow [2023-08-25 18:44:22,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=69, PETRI_TRANSITIONS=69} [2023-08-25 18:44:22,443 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 7 predicate places. [2023-08-25 18:44:22,444 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 69 transitions, 208 flow [2023-08-25 18:44:22,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.66666666666666) internal successors, (593), 3 states have internal predecessors, (593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:22,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:22,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 18:44:22,444 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:22,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash 501560490, now seen corresponding path program 1 times [2023-08-25 18:44:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322567132] [2023-08-25 18:44:22,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:22,536 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 18:44:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322567132] [2023-08-25 18:44:22,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322567132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:22,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:22,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922713820] [2023-08-25 18:44:22,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:44:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:22,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:44:22,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:44:22,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 424 [2023-08-25 18:44:22,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 69 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:22,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 424 [2023-08-25 18:44:22,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:22,718 INFO L124 PetriNetUnfolderBase]: 731/2179 cut-off events. [2023-08-25 18:44:22,718 INFO L125 PetriNetUnfolderBase]: For 253/289 co-relation queries the response was YES. [2023-08-25 18:44:22,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4235 conditions, 2179 events. 731/2179 cut-off events. For 253/289 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 16870 event pairs, 432 based on Foata normal form. 11/1786 useless extension candidates. Maximal degree in co-relation 4222. Up to 1380 conditions per place. [2023-08-25 18:44:22,727 INFO L140 encePairwiseOnDemand]: 418/424 looper letters, 69 selfloop transitions, 6 changer transitions 0/103 dead transitions. [2023-08-25 18:44:22,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 103 transitions, 440 flow [2023-08-25 18:44:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 18:44:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 18:44:22,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2023-08-25 18:44:22,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830188679245283 [2023-08-25 18:44:22,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2023-08-25 18:44:22,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2023-08-25 18:44:22,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:22,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2023-08-25 18:44:22,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 424.0) internal successors, (2544), 6 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,735 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 424.0) internal successors, (2544), 6 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,735 INFO L175 Difference]: Start difference. First operand has 69 places, 69 transitions, 208 flow. Second operand 5 states and 1024 transitions. [2023-08-25 18:44:22,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 103 transitions, 440 flow [2023-08-25 18:44:22,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 103 transitions, 434 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 18:44:22,738 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 245 flow [2023-08-25 18:44:22,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=245, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-08-25 18:44:22,738 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 13 predicate places. [2023-08-25 18:44:22,738 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 245 flow [2023-08-25 18:44:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.75) internal successors, (767), 4 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:22,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 18:44:22,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:22,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 963244793, now seen corresponding path program 1 times [2023-08-25 18:44:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:22,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277528074] [2023-08-25 18:44:22,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:22,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:22,827 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 18:44:22,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:22,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277528074] [2023-08-25 18:44:22,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277528074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:22,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:22,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 18:44:22,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088655651] [2023-08-25 18:44:22,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:22,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 18:44:22,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:22,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 18:44:22,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 18:44:22,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 424 [2023-08-25 18:44:22,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 245 flow. Second operand has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:22,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:22,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 424 [2023-08-25 18:44:22,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:23,174 INFO L124 PetriNetUnfolderBase]: 803/2425 cut-off events. [2023-08-25 18:44:23,174 INFO L125 PetriNetUnfolderBase]: For 505/539 co-relation queries the response was YES. [2023-08-25 18:44:23,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 2425 events. 803/2425 cut-off events. For 505/539 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 19294 event pairs, 341 based on Foata normal form. 10/2048 useless extension candidates. Maximal degree in co-relation 4975. Up to 927 conditions per place. [2023-08-25 18:44:23,182 INFO L140 encePairwiseOnDemand]: 413/424 looper letters, 98 selfloop transitions, 30 changer transitions 0/156 dead transitions. [2023-08-25 18:44:23,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 156 transitions, 731 flow [2023-08-25 18:44:23,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-25 18:44:23,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-25 18:44:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2356 transitions. [2023-08-25 18:44:23,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4630503144654088 [2023-08-25 18:44:23,187 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2356 transitions. [2023-08-25 18:44:23,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2356 transitions. [2023-08-25 18:44:23,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:23,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2356 transitions. [2023-08-25 18:44:23,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.33333333333334) internal successors, (2356), 12 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 424.0) internal successors, (5512), 13 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,198 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 424.0) internal successors, (5512), 13 states have internal predecessors, (5512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,198 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 245 flow. Second operand 12 states and 2356 transitions. [2023-08-25 18:44:23,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 156 transitions, 731 flow [2023-08-25 18:44:23,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 156 transitions, 726 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 18:44:23,201 INFO L231 Difference]: Finished difference. Result has 89 places, 92 transitions, 402 flow [2023-08-25 18:44:23,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=402, PETRI_PLACES=89, PETRI_TRANSITIONS=92} [2023-08-25 18:44:23,202 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 27 predicate places. [2023-08-25 18:44:23,202 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 92 transitions, 402 flow [2023-08-25 18:44:23,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 187.5) internal successors, (1125), 6 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:23,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:23,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 18:44:23,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:23,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:23,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1644702557, now seen corresponding path program 1 times [2023-08-25 18:44:23,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:23,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153548501] [2023-08-25 18:44:23,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:23,238 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 18:44:23,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:23,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153548501] [2023-08-25 18:44:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153548501] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:23,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:23,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 18:44:23,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653273596] [2023-08-25 18:44:23,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:23,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:23,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 424 [2023-08-25 18:44:23,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 92 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:23,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 424 [2023-08-25 18:44:23,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:23,365 INFO L124 PetriNetUnfolderBase]: 371/1062 cut-off events. [2023-08-25 18:44:23,365 INFO L125 PetriNetUnfolderBase]: For 533/535 co-relation queries the response was YES. [2023-08-25 18:44:23,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2606 conditions, 1062 events. 371/1062 cut-off events. For 533/535 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 6826 event pairs, 136 based on Foata normal form. 24/926 useless extension candidates. Maximal degree in co-relation 2584. Up to 513 conditions per place. [2023-08-25 18:44:23,369 INFO L140 encePairwiseOnDemand]: 414/424 looper letters, 88 selfloop transitions, 14 changer transitions 0/124 dead transitions. [2023-08-25 18:44:23,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 124 transitions, 731 flow [2023-08-25 18:44:23,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:23,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:23,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-25 18:44:23,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921383647798742 [2023-08-25 18:44:23,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-25 18:44:23,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-25 18:44:23,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:23,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-25 18:44:23,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,375 INFO L175 Difference]: Start difference. First operand has 89 places, 92 transitions, 402 flow. Second operand 3 states and 626 transitions. [2023-08-25 18:44:23,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 124 transitions, 731 flow [2023-08-25 18:44:23,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 124 transitions, 658 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-25 18:44:23,379 INFO L231 Difference]: Finished difference. Result has 81 places, 91 transitions, 393 flow [2023-08-25 18:44:23,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=393, PETRI_PLACES=81, PETRI_TRANSITIONS=91} [2023-08-25 18:44:23,379 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2023-08-25 18:44:23,379 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 91 transitions, 393 flow [2023-08-25 18:44:23,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:23,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 18:44:23,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:23,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:23,380 INFO L85 PathProgramCache]: Analyzing trace with hash -651711455, now seen corresponding path program 1 times [2023-08-25 18:44:23,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:23,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748923758] [2023-08-25 18:44:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:23,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:23,398 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 18:44:23,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748923758] [2023-08-25 18:44:23,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748923758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:23,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:23,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:23,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262986534] [2023-08-25 18:44:23,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:23,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:23,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:23,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 424 [2023-08-25 18:44:23,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 91 transitions, 393 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:23,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 424 [2023-08-25 18:44:23,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:23,491 INFO L124 PetriNetUnfolderBase]: 348/1015 cut-off events. [2023-08-25 18:44:23,492 INFO L125 PetriNetUnfolderBase]: For 379/387 co-relation queries the response was YES. [2023-08-25 18:44:23,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 1015 events. 348/1015 cut-off events. For 379/387 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6416 event pairs, 264 based on Foata normal form. 4/828 useless extension candidates. Maximal degree in co-relation 2597. Up to 749 conditions per place. [2023-08-25 18:44:23,495 INFO L140 encePairwiseOnDemand]: 421/424 looper letters, 75 selfloop transitions, 4 changer transitions 0/100 dead transitions. [2023-08-25 18:44:23,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 100 transitions, 585 flow [2023-08-25 18:44:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:23,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 625 transitions. [2023-08-25 18:44:23,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4913522012578616 [2023-08-25 18:44:23,497 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 625 transitions. [2023-08-25 18:44:23,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 625 transitions. [2023-08-25 18:44:23,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:23,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 625 transitions. [2023-08-25 18:44:23,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.33333333333334) internal successors, (625), 3 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,500 INFO L175 Difference]: Start difference. First operand has 81 places, 91 transitions, 393 flow. Second operand 3 states and 625 transitions. [2023-08-25 18:44:23,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 100 transitions, 585 flow [2023-08-25 18:44:23,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 569 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 18:44:23,502 INFO L231 Difference]: Finished difference. Result has 81 places, 90 transitions, 385 flow [2023-08-25 18:44:23,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=385, PETRI_PLACES=81, PETRI_TRANSITIONS=90} [2023-08-25 18:44:23,503 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2023-08-25 18:44:23,503 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 90 transitions, 385 flow [2023-08-25 18:44:23,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:23,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:23,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 18:44:23,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:23,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1351362735, now seen corresponding path program 1 times [2023-08-25 18:44:23,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:23,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570964965] [2023-08-25 18:44:23,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:23,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:23,524 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 18:44:23,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:23,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570964965] [2023-08-25 18:44:23,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570964965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:23,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:23,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:23,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770775732] [2023-08-25 18:44:23,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:23,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:23,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:23,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 424 [2023-08-25 18:44:23,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 90 transitions, 385 flow. Second operand has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:23,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 424 [2023-08-25 18:44:23,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:23,641 INFO L124 PetriNetUnfolderBase]: 581/1414 cut-off events. [2023-08-25 18:44:23,641 INFO L125 PetriNetUnfolderBase]: For 445/450 co-relation queries the response was YES. [2023-08-25 18:44:23,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3698 conditions, 1414 events. 581/1414 cut-off events. For 445/450 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8258 event pairs, 447 based on Foata normal form. 0/1137 useless extension candidates. Maximal degree in co-relation 3678. Up to 1217 conditions per place. [2023-08-25 18:44:23,646 INFO L140 encePairwiseOnDemand]: 419/424 looper letters, 95 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-08-25 18:44:23,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 113 transitions, 670 flow [2023-08-25 18:44:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:23,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:23,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2023-08-25 18:44:23,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015723270440252 [2023-08-25 18:44:23,648 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2023-08-25 18:44:23,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2023-08-25 18:44:23,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:23,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2023-08-25 18:44:23,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,651 INFO L175 Difference]: Start difference. First operand has 81 places, 90 transitions, 385 flow. Second operand 3 states and 638 transitions. [2023-08-25 18:44:23,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 113 transitions, 670 flow [2023-08-25 18:44:23,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 113 transitions, 658 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 18:44:23,654 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 408 flow [2023-08-25 18:44:23,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=408, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2023-08-25 18:44:23,654 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 20 predicate places. [2023-08-25 18:44:23,655 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 408 flow [2023-08-25 18:44:23,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:23,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-25 18:44:23,655 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:23,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:23,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1579607249, now seen corresponding path program 1 times [2023-08-25 18:44:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:23,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420889691] [2023-08-25 18:44:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:23,674 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 18:44:23,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:23,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420889691] [2023-08-25 18:44:23,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420889691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:23,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:23,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:23,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035393419] [2023-08-25 18:44:23,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:23,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:23,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:23,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:23,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:23,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 424 [2023-08-25 18:44:23,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:23,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 424 [2023-08-25 18:44:23,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:23,810 INFO L124 PetriNetUnfolderBase]: 702/1719 cut-off events. [2023-08-25 18:44:23,810 INFO L125 PetriNetUnfolderBase]: For 727/732 co-relation queries the response was YES. [2023-08-25 18:44:23,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4765 conditions, 1719 events. 702/1719 cut-off events. For 727/732 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 10808 event pairs, 298 based on Foata normal form. 0/1383 useless extension candidates. Maximal degree in co-relation 4744. Up to 1021 conditions per place. [2023-08-25 18:44:23,817 INFO L140 encePairwiseOnDemand]: 419/424 looper letters, 121 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2023-08-25 18:44:23,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 139 transitions, 860 flow [2023-08-25 18:44:23,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:23,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-25 18:44:23,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102201257861635 [2023-08-25 18:44:23,819 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-25 18:44:23,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-25 18:44:23,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:23,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-25 18:44:23,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,822 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,822 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 408 flow. Second operand 3 states and 649 transitions. [2023-08-25 18:44:23,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 139 transitions, 860 flow [2023-08-25 18:44:23,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 139 transitions, 855 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 18:44:23,826 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 443 flow [2023-08-25 18:44:23,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=443, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2023-08-25 18:44:23,826 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 23 predicate places. [2023-08-25 18:44:23,826 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 443 flow [2023-08-25 18:44:23,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:23,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:23,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-25 18:44:23,827 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:23,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:23,827 INFO L85 PathProgramCache]: Analyzing trace with hash 876633903, now seen corresponding path program 1 times [2023-08-25 18:44:23,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:23,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824213320] [2023-08-25 18:44:23,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:23,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:23,845 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 18:44:23,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:23,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824213320] [2023-08-25 18:44:23,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824213320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:23,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:23,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:23,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111105445] [2023-08-25 18:44:23,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:23,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:23,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:23,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:23,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:23,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 424 [2023-08-25 18:44:23,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 443 flow. Second operand has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:23,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 424 [2023-08-25 18:44:23,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:23,968 INFO L124 PetriNetUnfolderBase]: 487/1333 cut-off events. [2023-08-25 18:44:23,968 INFO L125 PetriNetUnfolderBase]: For 789/859 co-relation queries the response was YES. [2023-08-25 18:44:23,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 1333 events. 487/1333 cut-off events. For 789/859 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8617 event pairs, 307 based on Foata normal form. 25/1121 useless extension candidates. Maximal degree in co-relation 3707. Up to 1003 conditions per place. [2023-08-25 18:44:23,972 INFO L140 encePairwiseOnDemand]: 421/424 looper letters, 83 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-25 18:44:23,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 110 transitions, 675 flow [2023-08-25 18:44:23,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:23,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:23,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-25 18:44:23,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49056603773584906 [2023-08-25 18:44:23,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-25 18:44:23,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-25 18:44:23,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:23,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-25 18:44:23,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,977 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 443 flow. Second operand 3 states and 624 transitions. [2023-08-25 18:44:23,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 110 transitions, 675 flow [2023-08-25 18:44:23,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 661 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 18:44:23,980 INFO L231 Difference]: Finished difference. Result has 84 places, 95 transitions, 433 flow [2023-08-25 18:44:23,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=433, PETRI_PLACES=84, PETRI_TRANSITIONS=95} [2023-08-25 18:44:23,980 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 22 predicate places. [2023-08-25 18:44:23,980 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 95 transitions, 433 flow [2023-08-25 18:44:23,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:23,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:23,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:23,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-25 18:44:23,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:23,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:23,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1723185258, now seen corresponding path program 1 times [2023-08-25 18:44:23,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:23,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782000266] [2023-08-25 18:44:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:23,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:24,085 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 18:44:24,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:24,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782000266] [2023-08-25 18:44:24,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782000266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:24,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:24,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 18:44:24,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822676684] [2023-08-25 18:44:24,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:24,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 18:44:24,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:24,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 18:44:24,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-25 18:44:24,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 424 [2023-08-25 18:44:24,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 95 transitions, 433 flow. Second operand has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:24,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 424 [2023-08-25 18:44:24,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:24,316 INFO L124 PetriNetUnfolderBase]: 590/1693 cut-off events. [2023-08-25 18:44:24,316 INFO L125 PetriNetUnfolderBase]: For 951/1037 co-relation queries the response was YES. [2023-08-25 18:44:24,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4742 conditions, 1693 events. 590/1693 cut-off events. For 951/1037 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11930 event pairs, 241 based on Foata normal form. 31/1502 useless extension candidates. Maximal degree in co-relation 4720. Up to 472 conditions per place. [2023-08-25 18:44:24,323 INFO L140 encePairwiseOnDemand]: 415/424 looper letters, 121 selfloop transitions, 16 changer transitions 0/163 dead transitions. [2023-08-25 18:44:24,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 163 transitions, 977 flow [2023-08-25 18:44:24,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 18:44:24,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 18:44:24,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1567 transitions. [2023-08-25 18:44:24,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46196933962264153 [2023-08-25 18:44:24,326 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1567 transitions. [2023-08-25 18:44:24,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1567 transitions. [2023-08-25 18:44:24,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:24,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1567 transitions. [2023-08-25 18:44:24,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 195.875) internal successors, (1567), 8 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 424.0) internal successors, (3816), 9 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,333 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 424.0) internal successors, (3816), 9 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,333 INFO L175 Difference]: Start difference. First operand has 84 places, 95 transitions, 433 flow. Second operand 8 states and 1567 transitions. [2023-08-25 18:44:24,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 163 transitions, 977 flow [2023-08-25 18:44:24,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 163 transitions, 967 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 18:44:24,338 INFO L231 Difference]: Finished difference. Result has 91 places, 103 transitions, 531 flow [2023-08-25 18:44:24,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=531, PETRI_PLACES=91, PETRI_TRANSITIONS=103} [2023-08-25 18:44:24,340 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 29 predicate places. [2023-08-25 18:44:24,340 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 103 transitions, 531 flow [2023-08-25 18:44:24,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:24,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:24,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-25 18:44:24,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:24,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1530099332, now seen corresponding path program 1 times [2023-08-25 18:44:24,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:24,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441145949] [2023-08-25 18:44:24,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:24,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:24,456 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 18:44:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:24,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441145949] [2023-08-25 18:44:24,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441145949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:24,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:24,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 18:44:24,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489265752] [2023-08-25 18:44:24,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:24,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 18:44:24,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:24,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 18:44:24,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-25 18:44:24,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 424 [2023-08-25 18:44:24,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 103 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:24,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 424 [2023-08-25 18:44:24,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:24,623 INFO L124 PetriNetUnfolderBase]: 612/1552 cut-off events. [2023-08-25 18:44:24,624 INFO L125 PetriNetUnfolderBase]: For 1307/1412 co-relation queries the response was YES. [2023-08-25 18:44:24,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 1552 events. 612/1552 cut-off events. For 1307/1412 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 10152 event pairs, 256 based on Foata normal form. 42/1430 useless extension candidates. Maximal degree in co-relation 4727. Up to 852 conditions per place. [2023-08-25 18:44:24,629 INFO L140 encePairwiseOnDemand]: 419/424 looper letters, 94 selfloop transitions, 8 changer transitions 1/125 dead transitions. [2023-08-25 18:44:24,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 125 transitions, 831 flow [2023-08-25 18:44:24,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 18:44:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 18:44:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 746 transitions. [2023-08-25 18:44:24,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43985849056603776 [2023-08-25 18:44:24,631 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 746 transitions. [2023-08-25 18:44:24,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 746 transitions. [2023-08-25 18:44:24,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:24,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 746 transitions. [2023-08-25 18:44:24,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.5) internal successors, (746), 4 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,634 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,635 INFO L175 Difference]: Start difference. First operand has 91 places, 103 transitions, 531 flow. Second operand 4 states and 746 transitions. [2023-08-25 18:44:24,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 125 transitions, 831 flow [2023-08-25 18:44:24,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 125 transitions, 816 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-25 18:44:24,640 INFO L231 Difference]: Finished difference. Result has 92 places, 101 transitions, 521 flow [2023-08-25 18:44:24,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=521, PETRI_PLACES=92, PETRI_TRANSITIONS=101} [2023-08-25 18:44:24,640 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 30 predicate places. [2023-08-25 18:44:24,640 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 101 transitions, 521 flow [2023-08-25 18:44:24,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:24,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-25 18:44:24,641 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:24,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1759919606, now seen corresponding path program 2 times [2023-08-25 18:44:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436730121] [2023-08-25 18:44:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:24,712 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 18:44:24,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:24,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436730121] [2023-08-25 18:44:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436730121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 18:44:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003909915] [2023-08-25 18:44:24,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:24,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 18:44:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 18:44:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 18:44:24,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 424 [2023-08-25 18:44:24,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 101 transitions, 521 flow. Second operand has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:24,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 424 [2023-08-25 18:44:24,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:24,806 INFO L124 PetriNetUnfolderBase]: 165/543 cut-off events. [2023-08-25 18:44:24,806 INFO L125 PetriNetUnfolderBase]: For 280/283 co-relation queries the response was YES. [2023-08-25 18:44:24,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 543 events. 165/543 cut-off events. For 280/283 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2639 event pairs, 59 based on Foata normal form. 6/477 useless extension candidates. Maximal degree in co-relation 1485. Up to 273 conditions per place. [2023-08-25 18:44:24,808 INFO L140 encePairwiseOnDemand]: 415/424 looper letters, 73 selfloop transitions, 11 changer transitions 4/105 dead transitions. [2023-08-25 18:44:24,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 105 transitions, 631 flow [2023-08-25 18:44:24,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 18:44:24,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 18:44:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 784 transitions. [2023-08-25 18:44:24,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46226415094339623 [2023-08-25 18:44:24,810 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 784 transitions. [2023-08-25 18:44:24,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 784 transitions. [2023-08-25 18:44:24,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:24,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 784 transitions. [2023-08-25 18:44:24,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.0) internal successors, (784), 4 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,813 INFO L175 Difference]: Start difference. First operand has 92 places, 101 transitions, 521 flow. Second operand 4 states and 784 transitions. [2023-08-25 18:44:24,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 105 transitions, 631 flow [2023-08-25 18:44:24,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 596 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-25 18:44:24,815 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 338 flow [2023-08-25 18:44:24,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=338, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2023-08-25 18:44:24,815 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 25 predicate places. [2023-08-25 18:44:24,816 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 338 flow [2023-08-25 18:44:24,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.4) internal successors, (902), 5 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:24,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:24,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-25 18:44:24,816 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:24,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1057694226, now seen corresponding path program 1 times [2023-08-25 18:44:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:24,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299670382] [2023-08-25 18:44:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:24,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:24,906 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 18:44:24,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:24,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299670382] [2023-08-25 18:44:24,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299670382] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:24,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:24,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-25 18:44:24,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988480104] [2023-08-25 18:44:24,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:24,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 18:44:24,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:24,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 18:44:24,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 18:44:24,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 424 [2023-08-25 18:44:24,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:24,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:24,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 424 [2023-08-25 18:44:24,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:25,041 INFO L124 PetriNetUnfolderBase]: 137/502 cut-off events. [2023-08-25 18:44:25,041 INFO L125 PetriNetUnfolderBase]: For 365/366 co-relation queries the response was YES. [2023-08-25 18:44:25,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1422 conditions, 502 events. 137/502 cut-off events. For 365/366 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2485 event pairs, 76 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 1397. Up to 249 conditions per place. [2023-08-25 18:44:25,043 INFO L140 encePairwiseOnDemand]: 417/424 looper letters, 64 selfloop transitions, 6 changer transitions 4/94 dead transitions. [2023-08-25 18:44:25,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 94 transitions, 564 flow [2023-08-25 18:44:25,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 18:44:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 18:44:25,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1135 transitions. [2023-08-25 18:44:25,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461477987421384 [2023-08-25 18:44:25,045 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1135 transitions. [2023-08-25 18:44:25,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1135 transitions. [2023-08-25 18:44:25,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:25,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1135 transitions. [2023-08-25 18:44:25,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 424.0) internal successors, (2968), 7 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,050 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 424.0) internal successors, (2968), 7 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,050 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 338 flow. Second operand 6 states and 1135 transitions. [2023-08-25 18:44:25,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 94 transitions, 564 flow [2023-08-25 18:44:25,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-25 18:44:25,052 INFO L231 Difference]: Finished difference. Result has 93 places, 75 transitions, 358 flow [2023-08-25 18:44:25,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=358, PETRI_PLACES=93, PETRI_TRANSITIONS=75} [2023-08-25 18:44:25,052 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 31 predicate places. [2023-08-25 18:44:25,052 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 75 transitions, 358 flow [2023-08-25 18:44:25,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:25,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:25,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-25 18:44:25,053 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:25,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash -260722771, now seen corresponding path program 1 times [2023-08-25 18:44:25,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:25,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130126300] [2023-08-25 18:44:25,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:25,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:25,071 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 18:44:25,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:25,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130126300] [2023-08-25 18:44:25,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130126300] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:25,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:25,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 18:44:25,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571124190] [2023-08-25 18:44:25,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:25,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 18:44:25,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:25,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 18:44:25,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 18:44:25,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 424 [2023-08-25 18:44:25,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 75 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:25,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 424 [2023-08-25 18:44:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:25,155 INFO L124 PetriNetUnfolderBase]: 207/584 cut-off events. [2023-08-25 18:44:25,155 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2023-08-25 18:44:25,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 584 events. 207/584 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2713 event pairs, 110 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 1804. Up to 388 conditions per place. [2023-08-25 18:44:25,156 INFO L140 encePairwiseOnDemand]: 418/424 looper letters, 61 selfloop transitions, 9 changer transitions 24/103 dead transitions. [2023-08-25 18:44:25,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 103 transitions, 670 flow [2023-08-25 18:44:25,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 18:44:25,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 18:44:25,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-25 18:44:25,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-25 18:44:25,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-25 18:44:25,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-25 18:44:25,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:25,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-25 18:44:25,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 424.0) internal successors, (1696), 4 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,161 INFO L175 Difference]: Start difference. First operand has 93 places, 75 transitions, 358 flow. Second operand 3 states and 636 transitions. [2023-08-25 18:44:25,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 103 transitions, 670 flow [2023-08-25 18:44:25,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 103 transitions, 650 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-25 18:44:25,163 INFO L231 Difference]: Finished difference. Result has 91 places, 62 transitions, 315 flow [2023-08-25 18:44:25,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=91, PETRI_TRANSITIONS=62} [2023-08-25 18:44:25,163 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 29 predicate places. [2023-08-25 18:44:25,163 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 62 transitions, 315 flow [2023-08-25 18:44:25,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:25,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:25,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-25 18:44:25,164 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:25,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:25,164 INFO L85 PathProgramCache]: Analyzing trace with hash 292765721, now seen corresponding path program 1 times [2023-08-25 18:44:25,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:25,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874552454] [2023-08-25 18:44:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:25,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:25,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:25,219 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 18:44:25,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:25,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874552454] [2023-08-25 18:44:25,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874552454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:25,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:25,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 18:44:25,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252316646] [2023-08-25 18:44:25,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:25,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 18:44:25,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:25,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 18:44:25,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 18:44:25,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 424 [2023-08-25 18:44:25,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 62 transitions, 315 flow. Second operand has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:25,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 424 [2023-08-25 18:44:25,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:25,294 INFO L124 PetriNetUnfolderBase]: 104/335 cut-off events. [2023-08-25 18:44:25,294 INFO L125 PetriNetUnfolderBase]: For 716/740 co-relation queries the response was YES. [2023-08-25 18:44:25,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1190 conditions, 335 events. 104/335 cut-off events. For 716/740 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1332 event pairs, 22 based on Foata normal form. 11/321 useless extension candidates. Maximal degree in co-relation 1172. Up to 171 conditions per place. [2023-08-25 18:44:25,295 INFO L140 encePairwiseOnDemand]: 419/424 looper letters, 42 selfloop transitions, 4 changer transitions 5/72 dead transitions. [2023-08-25 18:44:25,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 72 transitions, 483 flow [2023-08-25 18:44:25,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-25 18:44:25,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-25 18:44:25,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1153 transitions. [2023-08-25 18:44:25,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45322327044025157 [2023-08-25 18:44:25,298 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1153 transitions. [2023-08-25 18:44:25,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1153 transitions. [2023-08-25 18:44:25,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:25,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1153 transitions. [2023-08-25 18:44:25,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 192.16666666666666) internal successors, (1153), 6 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 424.0) internal successors, (2968), 7 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,302 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 424.0) internal successors, (2968), 7 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,302 INFO L175 Difference]: Start difference. First operand has 91 places, 62 transitions, 315 flow. Second operand 6 states and 1153 transitions. [2023-08-25 18:44:25,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 72 transitions, 483 flow [2023-08-25 18:44:25,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 72 transitions, 419 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-08-25 18:44:25,304 INFO L231 Difference]: Finished difference. Result has 74 places, 61 transitions, 265 flow [2023-08-25 18:44:25,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=74, PETRI_TRANSITIONS=61} [2023-08-25 18:44:25,304 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 12 predicate places. [2023-08-25 18:44:25,305 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 61 transitions, 265 flow [2023-08-25 18:44:25,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 189.0) internal successors, (945), 5 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:25,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:25,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-25 18:44:25,305 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:25,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:25,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1450049427, now seen corresponding path program 1 times [2023-08-25 18:44:25,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:25,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415975724] [2023-08-25 18:44:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:25,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:25,401 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 18:44:25,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:25,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415975724] [2023-08-25 18:44:25,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415975724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:25,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:25,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-25 18:44:25,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580123466] [2023-08-25 18:44:25,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:25,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-25 18:44:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:25,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-25 18:44:25,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-25 18:44:25,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 424 [2023-08-25 18:44:25,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 61 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:25,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 424 [2023-08-25 18:44:25,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:25,562 INFO L124 PetriNetUnfolderBase]: 98/319 cut-off events. [2023-08-25 18:44:25,562 INFO L125 PetriNetUnfolderBase]: For 442/466 co-relation queries the response was YES. [2023-08-25 18:44:25,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 999 conditions, 319 events. 98/319 cut-off events. For 442/466 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1257 event pairs, 16 based on Foata normal form. 11/303 useless extension candidates. Maximal degree in co-relation 988. Up to 95 conditions per place. [2023-08-25 18:44:25,566 INFO L140 encePairwiseOnDemand]: 414/424 looper letters, 44 selfloop transitions, 9 changer transitions 5/79 dead transitions. [2023-08-25 18:44:25,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 493 flow [2023-08-25 18:44:25,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 18:44:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 18:44:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1496 transitions. [2023-08-25 18:44:25,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410377358490566 [2023-08-25 18:44:25,569 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1496 transitions. [2023-08-25 18:44:25,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1496 transitions. [2023-08-25 18:44:25,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:25,570 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1496 transitions. [2023-08-25 18:44:25,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 424.0) internal successors, (3816), 9 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,575 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 424.0) internal successors, (3816), 9 states have internal predecessors, (3816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,575 INFO L175 Difference]: Start difference. First operand has 74 places, 61 transitions, 265 flow. Second operand 8 states and 1496 transitions. [2023-08-25 18:44:25,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 493 flow [2023-08-25 18:44:25,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 79 transitions, 480 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-25 18:44:25,577 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 268 flow [2023-08-25 18:44:25,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=268, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2023-08-25 18:44:25,577 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 13 predicate places. [2023-08-25 18:44:25,577 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 268 flow [2023-08-25 18:44:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.14285714285714) internal successors, (1289), 7 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:25,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:25,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-25 18:44:25,578 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:25,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:25,578 INFO L85 PathProgramCache]: Analyzing trace with hash -653781526, now seen corresponding path program 1 times [2023-08-25 18:44:25,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:25,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023099390] [2023-08-25 18:44:25,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:25,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:25,764 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 18:44:25,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:25,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023099390] [2023-08-25 18:44:25,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023099390] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:25,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:25,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 18:44:25,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832659018] [2023-08-25 18:44:25,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:25,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 18:44:25,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 18:44:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-25 18:44:25,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 424 [2023-08-25 18:44:25,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:25,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 424 [2023-08-25 18:44:25,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:25,822 INFO L124 PetriNetUnfolderBase]: 20/126 cut-off events. [2023-08-25 18:44:25,823 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2023-08-25 18:44:25,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 126 events. 20/126 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 207 event pairs, 2 based on Foata normal form. 19/140 useless extension candidates. Maximal degree in co-relation 345. Up to 78 conditions per place. [2023-08-25 18:44:25,823 INFO L140 encePairwiseOnDemand]: 419/424 looper letters, 43 selfloop transitions, 4 changer transitions 5/63 dead transitions. [2023-08-25 18:44:25,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 63 transitions, 362 flow [2023-08-25 18:44:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 18:44:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 18:44:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 739 transitions. [2023-08-25 18:44:25,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357311320754717 [2023-08-25 18:44:25,825 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 739 transitions. [2023-08-25 18:44:25,825 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 739 transitions. [2023-08-25 18:44:25,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:25,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 739 transitions. [2023-08-25 18:44:25,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.75) internal successors, (739), 4 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,828 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,828 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 268 flow. Second operand 4 states and 739 transitions. [2023-08-25 18:44:25,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 63 transitions, 362 flow [2023-08-25 18:44:25,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 63 transitions, 302 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-08-25 18:44:25,829 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 141 flow [2023-08-25 18:44:25,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=141, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2023-08-25 18:44:25,830 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 1 predicate places. [2023-08-25 18:44:25,830 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 141 flow [2023-08-25 18:44:25,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.4) internal successors, (887), 5 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 18:44:25,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:25,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-25 18:44:25,831 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-25 18:44:25,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 18:44:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash 20858384, now seen corresponding path program 1 times [2023-08-25 18:44:25,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 18:44:25,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975265870] [2023-08-25 18:44:25,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 18:44:25,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 18:44:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 18:44:25,939 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 18:44:25,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 18:44:25,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975265870] [2023-08-25 18:44:25,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975265870] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 18:44:25,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 18:44:25,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-25 18:44:25,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389273183] [2023-08-25 18:44:25,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 18:44:25,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-25 18:44:25,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 18:44:25,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-25 18:44:25,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-25 18:44:25,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 424 [2023-08-25 18:44:25,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 18:44:25,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 424 [2023-08-25 18:44:25,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 18:44:25,983 INFO L124 PetriNetUnfolderBase]: 16/107 cut-off events. [2023-08-25 18:44:25,983 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-25 18:44:25,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 107 events. 16/107 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 166 event pairs, 15 based on Foata normal form. 2/109 useless extension candidates. Maximal degree in co-relation 256. Up to 70 conditions per place. [2023-08-25 18:44:25,983 INFO L140 encePairwiseOnDemand]: 421/424 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-25 18:44:25,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 42 transitions, 195 flow [2023-08-25 18:44:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 18:44:25,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 18:44:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 768 transitions. [2023-08-25 18:44:25,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528301886792453 [2023-08-25 18:44:25,985 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 768 transitions. [2023-08-25 18:44:25,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 768 transitions. [2023-08-25 18:44:25,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 18:44:25,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 768 transitions. [2023-08-25 18:44:25,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.0) internal successors, (768), 4 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,988 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,988 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 141 flow. Second operand 4 states and 768 transitions. [2023-08-25 18:44:25,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 42 transitions, 195 flow [2023-08-25 18:44:25,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 42 transitions, 183 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-25 18:44:25,989 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2023-08-25 18:44:25,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=424, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2023-08-25 18:44:25,990 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-08-25 18:44:25,990 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2023-08-25 18:44:25,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 18:44:25,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (19 of 20 remaining) [2023-08-25 18:44:25,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (18 of 20 remaining) [2023-08-25 18:44:25,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 20 remaining) [2023-08-25 18:44:25,992 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (16 of 20 remaining) [2023-08-25 18:44:25,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (15 of 20 remaining) [2023-08-25 18:44:25,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 20 remaining) [2023-08-25 18:44:25,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 20 remaining) [2023-08-25 18:44:25,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (12 of 20 remaining) [2023-08-25 18:44:25,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (11 of 20 remaining) [2023-08-25 18:44:25,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONASSERT (10 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONASSERT (7 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (6 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (4 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONASSERT (3 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (1 of 20 remaining) [2023-08-25 18:44:25,994 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONASSERT (0 of 20 remaining) [2023-08-25 18:44:25,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-25 18:44:25,994 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 18:44:25,999 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 18:44:26,000 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 18:44:26,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 06:44:26 BasicIcfg [2023-08-25 18:44:26,002 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 18:44:26,003 INFO L158 Benchmark]: Toolchain (without parser) took 10322.37ms. Allocated memory was 427.8MB in the beginning and 696.3MB in the end (delta: 268.4MB). Free memory was 402.8MB in the beginning and 289.7MB in the end (delta: 113.1MB). Peak memory consumption was 384.6MB. Max. memory is 16.0GB. [2023-08-25 18:44:26,003 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 427.8MB. Free memory is still 404.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 18:44:26,003 INFO L158 Benchmark]: CACSL2BoogieTranslator took 432.01ms. Allocated memory is still 427.8MB. Free memory was 402.3MB in the beginning and 382.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 18:44:26,003 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.21ms. Allocated memory is still 427.8MB. Free memory was 382.4MB in the beginning and 379.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 18:44:26,003 INFO L158 Benchmark]: Boogie Preprocessor took 17.69ms. Allocated memory is still 427.8MB. Free memory was 379.8MB in the beginning and 378.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 18:44:26,003 INFO L158 Benchmark]: RCFGBuilder took 470.67ms. Allocated memory is still 427.8MB. Free memory was 378.2MB in the beginning and 358.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-25 18:44:26,003 INFO L158 Benchmark]: TraceAbstraction took 9362.65ms. Allocated memory was 427.8MB in the beginning and 696.3MB in the end (delta: 268.4MB). Free memory was 357.7MB in the beginning and 289.7MB in the end (delta: 68.0MB). Peak memory consumption was 338.5MB. Max. memory is 16.0GB. [2023-08-25 18:44:26,005 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 427.8MB. Free memory is still 404.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 432.01ms. Allocated memory is still 427.8MB. Free memory was 402.3MB in the beginning and 382.4MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.21ms. Allocated memory is still 427.8MB. Free memory was 382.4MB in the beginning and 379.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.69ms. Allocated memory is still 427.8MB. Free memory was 379.8MB in the beginning and 378.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 470.67ms. Allocated memory is still 427.8MB. Free memory was 378.2MB in the beginning and 358.7MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 9362.65ms. Allocated memory was 427.8MB in the beginning and 696.3MB in the end (delta: 268.4MB). Free memory was 357.7MB in the beginning and 289.7MB in the end (delta: 68.0MB). Peak memory consumption was 338.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 236]: Unsoundness Warning unspecified type, defaulting to int C: short [236] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 209 PlacesBefore, 62 PlacesAfterwards, 216 TransitionsBefore, 62 TransitionsAfterwards, 14484 CoEnabledTransitionPairs, 7 FixpointIterations, 41 TrivialSequentialCompositions, 124 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 34 ConcurrentYvCompositions, 7 ChoiceCompositions, 206 TotalNumberOfCompositions, 40029 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16395, independent: 15652, independent conditional: 0, independent unconditional: 15652, dependent: 743, dependent conditional: 0, dependent unconditional: 743, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8176, independent: 8038, independent conditional: 0, independent unconditional: 8038, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16395, independent: 7614, independent conditional: 0, independent unconditional: 7614, dependent: 605, dependent conditional: 0, dependent unconditional: 605, unknown: 8176, unknown conditional: 0, unknown unconditional: 8176] , Statistics on independence cache: Total cache size (in pairs): 553, Positive cache size: 491, Positive conditional cache size: 0, Positive unconditional cache size: 491, Negative cache size: 62, Negative conditional cache size: 0, Negative unconditional cache size: 62, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 737]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 738]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 739]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 742]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 746]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 716]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 717]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 722]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 723]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 302 locations, 20 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: 9.2s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 851 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 851 mSDsluCounter, 61 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 63 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2395 IncrementalHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 63 mSolverCounterUnsat, 61 mSDtfsCounter, 2395 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=531occurred in iteration=12, InterpolantAutomatonStates: 91, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 361 NumberOfCodeBlocks, 361 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 341 ConstructedInterpolants, 0 QuantifiedInterpolants, 1274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 18:44:26,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...