/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 09:35:53,027 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 09:35:53,103 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 09:35:53,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 09:35:53,107 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 09:35:53,125 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 09:35:53,125 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 09:35:53,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 09:35:53,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 09:35:53,129 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 09:35:53,130 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 09:35:53,130 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 09:35:53,130 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 09:35:53,131 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 09:35:53,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 09:35:53,136 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 09:35:53,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 09:35:53,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 09:35:53,136 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 09:35:53,136 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 09:35:53,137 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 09:35:53,137 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 09:35:53,137 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 09:35:53,138 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 09:35:53,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 09:35:53,138 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 09:35:53,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 09:35:53,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:35:53,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 09:35:53,139 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 09:35:53,140 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 09:35:53,140 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 09:35:53,140 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 09:35:53,140 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 09:35:53,141 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 09:35:53,141 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 09:35:53,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 09:35:53,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 09:35:53,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 09:35:53,472 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 09:35:53,472 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 09:35:53,473 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-08-26 09:35:54,778 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 09:35:54,950 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 09:35:54,951 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2023-08-26 09:35:54,958 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa4e5d6e/0d749d4af40b4bdaaafd6ca8b7d6dd90/FLAGdbf94dd22 [2023-08-26 09:35:54,975 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/faa4e5d6e/0d749d4af40b4bdaaafd6ca8b7d6dd90 [2023-08-26 09:35:54,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 09:35:54,980 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 09:35:54,983 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 09:35:54,983 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 09:35:54,986 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 09:35:54,987 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:35:54" (1/1) ... [2023-08-26 09:35:54,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e22a830 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:54, skipping insertion in model container [2023-08-26 09:35:54,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:35:54" (1/1) ... [2023-08-26 09:35:55,008 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 09:35:55,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:35:55,191 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 09:35:55,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 09:35:55,239 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:35:55,239 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 09:35:55,247 INFO L206 MainTranslator]: Completed translation [2023-08-26 09:35:55,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55 WrapperNode [2023-08-26 09:35:55,249 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 09:35:55,250 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 09:35:55,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 09:35:55,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 09:35:55,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,273 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,300 INFO L138 Inliner]: procedures = 21, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 107 [2023-08-26 09:35:55,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 09:35:55,301 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 09:35:55,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 09:35:55,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 09:35:55,309 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,331 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,334 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,335 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 09:35:55,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 09:35:55,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 09:35:55,342 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 09:35:55,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (1/1) ... [2023-08-26 09:35:55,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 09:35:55,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:35:55,372 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 09:35:55,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 09:35:55,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 09:35:55,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 09:35:55,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 09:35:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 09:35:55,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 09:35:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 09:35:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 09:35:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 09:35:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 09:35:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 09:35:55,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 09:35:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 09:35:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 09:35:55,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 09:35:55,417 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 09:35:55,514 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 09:35:55,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 09:35:55,750 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 09:35:55,905 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 09:35:55,905 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-26 09:35:55,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:35:55 BoogieIcfgContainer [2023-08-26 09:35:55,907 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 09:35:55,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 09:35:55,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 09:35:55,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 09:35:55,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:35:54" (1/3) ... [2023-08-26 09:35:55,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f01c70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:35:55, skipping insertion in model container [2023-08-26 09:35:55,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:35:55" (2/3) ... [2023-08-26 09:35:55,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f01c70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:35:55, skipping insertion in model container [2023-08-26 09:35:55,914 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:35:55" (3/3) ... [2023-08-26 09:35:55,915 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2023-08-26 09:35:55,930 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 09:35:55,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2023-08-26 09:35:55,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 09:35:56,005 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 09:35:56,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 157 transitions, 330 flow [2023-08-26 09:35:56,131 INFO L124 PetriNetUnfolderBase]: 7/155 cut-off events. [2023-08-26 09:35:56,132 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:35:56,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164 conditions, 155 events. 7/155 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 136 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-08-26 09:35:56,138 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 157 transitions, 330 flow [2023-08-26 09:35:56,145 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 146 transitions, 304 flow [2023-08-26 09:35:56,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 09:35:56,161 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 146 transitions, 304 flow [2023-08-26 09:35:56,165 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 146 transitions, 304 flow [2023-08-26 09:35:56,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 146 transitions, 304 flow [2023-08-26 09:35:56,208 INFO L124 PetriNetUnfolderBase]: 7/146 cut-off events. [2023-08-26 09:35:56,208 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 09:35:56,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 146 events. 7/146 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 135 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2023-08-26 09:35:56,211 INFO L119 LiptonReduction]: Number of co-enabled transitions 1560 [2023-08-26 09:35:59,678 INFO L134 LiptonReduction]: Checked pairs total: 4058 [2023-08-26 09:35:59,678 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-08-26 09:35:59,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 09:35:59,696 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;@104a266b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 09:35:59,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-08-26 09:35:59,697 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 09:35:59,697 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-26 09:35:59,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 09:35:59,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:35:59,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-26 09:35:59,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:35:59,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:35:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash 716, now seen corresponding path program 1 times [2023-08-26 09:35:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:35:59,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215187378] [2023-08-26 09:35:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:35:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:35:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:35:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:35:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:35:59,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215187378] [2023-08-26 09:35:59,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215187378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:35:59,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:35:59,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-26 09:35:59,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551672937] [2023-08-26 09:35:59,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:35:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 09:35:59,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:35:59,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 09:35:59,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 09:35:59,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 321 [2023-08-26 09:35:59,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:35:59,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:35:59,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 321 [2023-08-26 09:35:59,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:35:59,839 INFO L124 PetriNetUnfolderBase]: 79/140 cut-off events. [2023-08-26 09:35:59,839 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-26 09:35:59,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 140 events. 79/140 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 359 event pairs, 57 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 240. Up to 141 conditions per place. [2023-08-26 09:35:59,841 INFO L140 encePairwiseOnDemand]: 293/321 looper letters, 18 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-26 09:35:59,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 84 flow [2023-08-26 09:35:59,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 09:35:59,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 09:35:59,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 298 transitions. [2023-08-26 09:35:59,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46417445482866043 [2023-08-26 09:35:59,853 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 298 transitions. [2023-08-26 09:35:59,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 298 transitions. [2023-08-26 09:35:59,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:35:59,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 298 transitions. [2023-08-26 09:35:59,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.0) internal successors, (298), 2 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:35:59,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:35:59,862 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 321.0) internal successors, (963), 3 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:35:59,863 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 104 flow. Second operand 2 states and 298 transitions. [2023-08-26 09:35:59,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 84 flow [2023-08-26 09:35:59,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 76 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-26 09:35:59,867 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 40 flow [2023-08-26 09:35:59,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=40, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-08-26 09:35:59,871 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -31 predicate places. [2023-08-26 09:35:59,871 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 40 flow [2023-08-26 09:35:59,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:35:59,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:35:59,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:35:59,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 09:35:59,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:35:59,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:35:59,873 INFO L85 PathProgramCache]: Analyzing trace with hash -301313628, now seen corresponding path program 1 times [2023-08-26 09:35:59,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:35:59,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988632590] [2023-08-26 09:35:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:35:59,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:35:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:36:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:00,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:36:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988632590] [2023-08-26 09:36:00,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988632590] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:36:00,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:36:00,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 09:36:00,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860424342] [2023-08-26 09:36:00,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:36:00,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:36:00,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:36:00,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:36:00,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 09:36:00,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 321 [2023-08-26 09:36:00,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:36:00,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 321 [2023-08-26 09:36:00,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:36:00,444 INFO L124 PetriNetUnfolderBase]: 125/218 cut-off events. [2023-08-26 09:36:00,444 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 09:36:00,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 218 events. 125/218 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 685 event pairs, 10 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 443. Up to 144 conditions per place. [2023-08-26 09:36:00,449 INFO L140 encePairwiseOnDemand]: 315/321 looper letters, 36 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-26 09:36:00,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 42 transitions, 175 flow [2023-08-26 09:36:00,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:36:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:36:00,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 644 transitions. [2023-08-26 09:36:00,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012461059190031 [2023-08-26 09:36:00,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 644 transitions. [2023-08-26 09:36:00,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 644 transitions. [2023-08-26 09:36:00,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:36:00,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 644 transitions. [2023-08-26 09:36:00,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.8) internal successors, (644), 5 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) [2023-08-26 09:36:00,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,465 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,465 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 40 flow. Second operand 5 states and 644 transitions. [2023-08-26 09:36:00,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 42 transitions, 175 flow [2023-08-26 09:36:00,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 42 transitions, 175 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 09:36:00,467 INFO L231 Difference]: Finished difference. Result has 27 places, 23 transitions, 85 flow [2023-08-26 09:36:00,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=27, PETRI_TRANSITIONS=23} [2023-08-26 09:36:00,468 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -24 predicate places. [2023-08-26 09:36:00,469 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 23 transitions, 85 flow [2023-08-26 09:36:00,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:36:00,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:36:00,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 09:36:00,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:36:00,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:36:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2124573542, now seen corresponding path program 1 times [2023-08-26 09:36:00,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:36:00,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477520749] [2023-08-26 09:36:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:36:00,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:36:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:36:00,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:36:00,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:36:00,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477520749] [2023-08-26 09:36:00,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477520749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:36:00,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:36:00,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 09:36:00,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204677480] [2023-08-26 09:36:00,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:36:00,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:36:00,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:36:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:36:00,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 09:36:00,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 321 [2023-08-26 09:36:00,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:36:00,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 321 [2023-08-26 09:36:00,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:36:00,746 INFO L124 PetriNetUnfolderBase]: 153/266 cut-off events. [2023-08-26 09:36:00,746 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-08-26 09:36:00,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 266 events. 153/266 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 868 event pairs, 15 based on Foata normal form. 14/280 useless extension candidates. Maximal degree in co-relation 736. Up to 153 conditions per place. [2023-08-26 09:36:00,748 INFO L140 encePairwiseOnDemand]: 317/321 looper letters, 39 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2023-08-26 09:36:00,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 42 transitions, 245 flow [2023-08-26 09:36:00,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 09:36:00,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 09:36:00,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 515 transitions. [2023-08-26 09:36:00,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40109034267912774 [2023-08-26 09:36:00,751 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 515 transitions. [2023-08-26 09:36:00,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 515 transitions. [2023-08-26 09:36:00,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:36:00,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 515 transitions. [2023-08-26 09:36:00,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,756 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,756 INFO L175 Difference]: Start difference. First operand has 27 places, 23 transitions, 85 flow. Second operand 4 states and 515 transitions. [2023-08-26 09:36:00,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 42 transitions, 245 flow [2023-08-26 09:36:00,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 42 transitions, 240 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:36:00,758 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 96 flow [2023-08-26 09:36:00,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=96, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2023-08-26 09:36:00,759 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -21 predicate places. [2023-08-26 09:36:00,761 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 96 flow [2023-08-26 09:36:00,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:36:00,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:36:00,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 09:36:00,764 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:36:00,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:36:00,765 INFO L85 PathProgramCache]: Analyzing trace with hash -2142896408, now seen corresponding path program 1 times [2023-08-26 09:36:00,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:36:00,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519706584] [2023-08-26 09:36:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:36:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:36:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:36:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:00,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:36:00,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519706584] [2023-08-26 09:36:00,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519706584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 09:36:00,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 09:36:00,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 09:36:00,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070022283] [2023-08-26 09:36:00,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 09:36:00,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 09:36:00,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:36:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 09:36:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 09:36:00,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 321 [2023-08-26 09:36:00,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:00,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:36:00,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 321 [2023-08-26 09:36:00,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:36:01,073 INFO L124 PetriNetUnfolderBase]: 160/275 cut-off events. [2023-08-26 09:36:01,074 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2023-08-26 09:36:01,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 810 conditions, 275 events. 160/275 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 868 event pairs, 26 based on Foata normal form. 16/291 useless extension candidates. Maximal degree in co-relation 802. Up to 117 conditions per place. [2023-08-26 09:36:01,076 INFO L140 encePairwiseOnDemand]: 316/321 looper letters, 35 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2023-08-26 09:36:01,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 247 flow [2023-08-26 09:36:01,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 09:36:01,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 09:36:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 639 transitions. [2023-08-26 09:36:01,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3981308411214953 [2023-08-26 09:36:01,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 639 transitions. [2023-08-26 09:36:01,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 639 transitions. [2023-08-26 09:36:01,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:36:01,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 639 transitions. [2023-08-26 09:36:01,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:01,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:01,084 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 321.0) internal successors, (1926), 6 states have internal predecessors, (1926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:01,084 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 96 flow. Second operand 5 states and 639 transitions. [2023-08-26 09:36:01,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 247 flow [2023-08-26 09:36:01,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 42 transitions, 241 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 09:36:01,088 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 142 flow [2023-08-26 09:36:01,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-26 09:36:01,089 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -16 predicate places. [2023-08-26 09:36:01,089 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 142 flow [2023-08-26 09:36:01,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.0) internal successors, (496), 4 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:01,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:36:01,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:36:01,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 09:36:01,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:36:01,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:36:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash 807166850, now seen corresponding path program 2 times [2023-08-26 09:36:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:36:01,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060895069] [2023-08-26 09:36:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:36:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:36:01,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:36:01,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:01,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:36:01,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060895069] [2023-08-26 09:36:01,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060895069] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:36:01,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207713225] [2023-08-26 09:36:01,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:36:01,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:36:01,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:36:01,901 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:36:01,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 09:36:02,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:36:02,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:36:02,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-26 09:36:02,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:36:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:02,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:36:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207713225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:36:03,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:36:03,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 23 [2023-08-26 09:36:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034528411] [2023-08-26 09:36:03,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:36:03,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-26 09:36:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:36:03,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-26 09:36:03,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2023-08-26 09:36:03,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 321 [2023-08-26 09:36:03,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 142 flow. Second operand has 25 states, 25 states have (on average 111.92) internal successors, (2798), 25 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:03,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:36:03,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 321 [2023-08-26 09:36:03,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:36:07,308 INFO L124 PetriNetUnfolderBase]: 679/1179 cut-off events. [2023-08-26 09:36:07,308 INFO L125 PetriNetUnfolderBase]: For 1367/1367 co-relation queries the response was YES. [2023-08-26 09:36:07,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3788 conditions, 1179 events. 679/1179 cut-off events. For 1367/1367 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5659 event pairs, 20 based on Foata normal form. 11/1190 useless extension candidates. Maximal degree in co-relation 3777. Up to 385 conditions per place. [2023-08-26 09:36:07,315 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 117 selfloop transitions, 113 changer transitions 83/313 dead transitions. [2023-08-26 09:36:07,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 313 transitions, 2010 flow [2023-08-26 09:36:07,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-26 09:36:07,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-26 09:36:07,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 6346 transitions. [2023-08-26 09:36:07,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944491645426224 [2023-08-26 09:36:07,369 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 6346 transitions. [2023-08-26 09:36:07,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 6346 transitions. [2023-08-26 09:36:07,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:36:07,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 6346 transitions. [2023-08-26 09:36:07,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 115.38181818181818) internal successors, (6346), 55 states have internal predecessors, (6346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:07,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 321.0) internal successors, (17976), 56 states have internal predecessors, (17976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:07,412 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 321.0) internal successors, (17976), 56 states have internal predecessors, (17976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:07,412 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 142 flow. Second operand 55 states and 6346 transitions. [2023-08-26 09:36:07,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 313 transitions, 2010 flow [2023-08-26 09:36:07,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 313 transitions, 1990 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 09:36:07,425 INFO L231 Difference]: Finished difference. Result has 127 places, 143 transitions, 1192 flow [2023-08-26 09:36:07,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1192, PETRI_PLACES=127, PETRI_TRANSITIONS=143} [2023-08-26 09:36:07,427 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 76 predicate places. [2023-08-26 09:36:07,427 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 143 transitions, 1192 flow [2023-08-26 09:36:07,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 111.92) internal successors, (2798), 25 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:07,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:36:07,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:36:07,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 09:36:07,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:36:07,635 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:36:07,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:36:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1603690430, now seen corresponding path program 1 times [2023-08-26 09:36:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:36:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595479037] [2023-08-26 09:36:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:36:07,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:36:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:36:08,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:08,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:36:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595479037] [2023-08-26 09:36:08,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595479037] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:36:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240995367] [2023-08-26 09:36:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:36:08,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:36:08,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:36:08,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:36:08,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 09:36:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:36:09,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-26 09:36:09,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:36:09,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:09,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:36:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:11,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240995367] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:36:11,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:36:11,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 25 [2023-08-26 09:36:11,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815613286] [2023-08-26 09:36:11,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:36:11,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 09:36:11,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:36:11,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 09:36:11,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2023-08-26 09:36:11,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 321 [2023-08-26 09:36:11,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 143 transitions, 1192 flow. Second operand has 27 states, 27 states have (on average 112.22222222222223) internal successors, (3030), 27 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:11,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:36:11,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 321 [2023-08-26 09:36:11,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:36:33,024 INFO L124 PetriNetUnfolderBase]: 1821/3258 cut-off events. [2023-08-26 09:36:33,024 INFO L125 PetriNetUnfolderBase]: For 70624/70624 co-relation queries the response was YES. [2023-08-26 09:36:33,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18634 conditions, 3258 events. 1821/3258 cut-off events. For 70624/70624 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 19286 event pairs, 12 based on Foata normal form. 30/3288 useless extension candidates. Maximal degree in co-relation 18584. Up to 1029 conditions per place. [2023-08-26 09:36:33,057 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 290 selfloop transitions, 294 changer transitions 266/850 dead transitions. [2023-08-26 09:36:33,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 850 transitions, 8960 flow [2023-08-26 09:36:33,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2023-08-26 09:36:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2023-08-26 09:36:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 11294 transitions. [2023-08-26 09:36:33,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35901837370462203 [2023-08-26 09:36:33,076 INFO L72 ComplementDD]: Start complementDD. Operand 98 states and 11294 transitions. [2023-08-26 09:36:33,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 11294 transitions. [2023-08-26 09:36:33,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:36:33,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 98 states and 11294 transitions. [2023-08-26 09:36:33,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 99 states, 98 states have (on average 115.24489795918367) internal successors, (11294), 98 states have internal predecessors, (11294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:33,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 99 states, 99 states have (on average 321.0) internal successors, (31779), 99 states have internal predecessors, (31779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:33,151 INFO L81 ComplementDD]: Finished complementDD. Result has 99 states, 99 states have (on average 321.0) internal successors, (31779), 99 states have internal predecessors, (31779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:33,151 INFO L175 Difference]: Start difference. First operand has 127 places, 143 transitions, 1192 flow. Second operand 98 states and 11294 transitions. [2023-08-26 09:36:33,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 850 transitions, 8960 flow [2023-08-26 09:36:33,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 850 transitions, 8011 flow, removed 463 selfloop flow, removed 15 redundant places. [2023-08-26 09:36:33,307 INFO L231 Difference]: Finished difference. Result has 254 places, 412 transitions, 4176 flow [2023-08-26 09:36:33,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=98, PETRI_FLOW=4176, PETRI_PLACES=254, PETRI_TRANSITIONS=412} [2023-08-26 09:36:33,308 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 203 predicate places. [2023-08-26 09:36:33,308 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 412 transitions, 4176 flow [2023-08-26 09:36:33,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 112.22222222222223) internal successors, (3030), 27 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:33,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:36:33,309 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:36:33,317 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-26 09:36:33,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-26 09:36:33,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:36:33,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:36:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1867033358, now seen corresponding path program 2 times [2023-08-26 09:36:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:36:33,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333734132] [2023-08-26 09:36:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:36:33,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:36:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:36:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:34,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:36:34,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333734132] [2023-08-26 09:36:34,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333734132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:36:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300959683] [2023-08-26 09:36:34,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:36:34,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:36:34,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:36:34,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:36:34,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-26 09:36:34,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:36:34,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:36:34,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-26 09:36:34,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:36:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:35,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:36:37,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:36:37,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300959683] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:36:37,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:36:37,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 30 [2023-08-26 09:36:37,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452192619] [2023-08-26 09:36:37,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:36:37,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 09:36:37,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:36:37,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 09:36:37,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2023-08-26 09:36:37,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 321 [2023-08-26 09:36:37,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 412 transitions, 4176 flow. Second operand has 32 states, 32 states have (on average 102.75) internal successors, (3288), 32 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:36:37,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:36:37,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 321 [2023-08-26 09:36:37,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:37:03,848 INFO L124 PetriNetUnfolderBase]: 1904/3339 cut-off events. [2023-08-26 09:37:03,848 INFO L125 PetriNetUnfolderBase]: For 76084/76084 co-relation queries the response was YES. [2023-08-26 09:37:03,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22874 conditions, 3339 events. 1904/3339 cut-off events. For 76084/76084 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19940 event pairs, 5 based on Foata normal form. 10/3349 useless extension candidates. Maximal degree in co-relation 22779. Up to 708 conditions per place. [2023-08-26 09:37:03,890 INFO L140 encePairwiseOnDemand]: 311/321 looper letters, 178 selfloop transitions, 566 changer transitions 133/877 dead transitions. [2023-08-26 09:37:03,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 877 transitions, 11236 flow [2023-08-26 09:37:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-26 09:37:03,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-26 09:37:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7610 transitions. [2023-08-26 09:37:03,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32926618206992037 [2023-08-26 09:37:03,900 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7610 transitions. [2023-08-26 09:37:03,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7610 transitions. [2023-08-26 09:37:03,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:37:03,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7610 transitions. [2023-08-26 09:37:03,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 105.69444444444444) internal successors, (7610), 72 states have internal predecessors, (7610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:37:03,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 321.0) internal successors, (23433), 73 states have internal predecessors, (23433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:37:03,932 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 321.0) internal successors, (23433), 73 states have internal predecessors, (23433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:37:03,932 INFO L175 Difference]: Start difference. First operand has 254 places, 412 transitions, 4176 flow. Second operand 72 states and 7610 transitions. [2023-08-26 09:37:03,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 877 transitions, 11236 flow [2023-08-26 09:37:04,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 877 transitions, 9375 flow, removed 902 selfloop flow, removed 44 redundant places. [2023-08-26 09:37:04,165 INFO L231 Difference]: Finished difference. Result has 258 places, 629 transitions, 7002 flow [2023-08-26 09:37:04,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=7002, PETRI_PLACES=258, PETRI_TRANSITIONS=629} [2023-08-26 09:37:04,166 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 207 predicate places. [2023-08-26 09:37:04,166 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 629 transitions, 7002 flow [2023-08-26 09:37:04,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 102.75) internal successors, (3288), 32 states have internal predecessors, (3288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:37:04,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:37:04,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:37:04,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-26 09:37:04,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:37:04,368 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:37:04,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:37:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1825707264, now seen corresponding path program 3 times [2023-08-26 09:37:04,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:37:04,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474139110] [2023-08-26 09:37:04,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:37:04,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:37:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:37:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:37:06,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:37:06,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474139110] [2023-08-26 09:37:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474139110] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:37:06,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379532846] [2023-08-26 09:37:06,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:37:06,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:37:06,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:37:06,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:37:06,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-26 09:37:06,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:37:06,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:37:06,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-26 09:37:06,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:37:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:37:07,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:37:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:37:09,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379532846] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:37:09,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:37:09,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 26 [2023-08-26 09:37:09,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462244155] [2023-08-26 09:37:09,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:37:09,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 09:37:09,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:37:09,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 09:37:09,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2023-08-26 09:37:09,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 321 [2023-08-26 09:37:09,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 629 transitions, 7002 flow. Second operand has 28 states, 28 states have (on average 112.0) internal successors, (3136), 28 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:37:09,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:37:09,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 321 [2023-08-26 09:37:09,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:37:12,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:37:50,187 WARN L234 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 144 DAG size of output: 78 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:38:06,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:38:07,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:38:16,167 INFO L124 PetriNetUnfolderBase]: 2604/4556 cut-off events. [2023-08-26 09:38:16,168 INFO L125 PetriNetUnfolderBase]: For 66133/66133 co-relation queries the response was YES. [2023-08-26 09:38:16,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29279 conditions, 4556 events. 2604/4556 cut-off events. For 66133/66133 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 28718 event pairs, 24 based on Foata normal form. 19/4575 useless extension candidates. Maximal degree in co-relation 29209. Up to 1329 conditions per place. [2023-08-26 09:38:16,209 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 346 selfloop transitions, 682 changer transitions 112/1140 dead transitions. [2023-08-26 09:38:16,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 1140 transitions, 14895 flow [2023-08-26 09:38:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-26 09:38:16,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-26 09:38:16,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 7717 transitions. [2023-08-26 09:38:16,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588134095875761 [2023-08-26 09:38:16,219 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 7717 transitions. [2023-08-26 09:38:16,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 7717 transitions. [2023-08-26 09:38:16,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:38:16,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 7717 transitions. [2023-08-26 09:38:16,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 115.17910447761194) internal successors, (7717), 67 states have internal predecessors, (7717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:38:16,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 321.0) internal successors, (21828), 68 states have internal predecessors, (21828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:38:16,248 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 321.0) internal successors, (21828), 68 states have internal predecessors, (21828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:38:16,249 INFO L175 Difference]: Start difference. First operand has 258 places, 629 transitions, 7002 flow. Second operand 67 states and 7717 transitions. [2023-08-26 09:38:16,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 1140 transitions, 14895 flow [2023-08-26 09:38:16,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1140 transitions, 13597 flow, removed 569 selfloop flow, removed 15 redundant places. [2023-08-26 09:38:16,556 INFO L231 Difference]: Finished difference. Result has 311 places, 874 transitions, 11777 flow [2023-08-26 09:38:16,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=6427, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=458, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=11777, PETRI_PLACES=311, PETRI_TRANSITIONS=874} [2023-08-26 09:38:16,557 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 260 predicate places. [2023-08-26 09:38:16,557 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 874 transitions, 11777 flow [2023-08-26 09:38:16,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 112.0) internal successors, (3136), 28 states have internal predecessors, (3136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:38:16,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:38:16,558 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:38:16,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-26 09:38:16,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:38:16,761 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:38:16,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:38:16,761 INFO L85 PathProgramCache]: Analyzing trace with hash -960938714, now seen corresponding path program 4 times [2023-08-26 09:38:16,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:38:16,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441061207] [2023-08-26 09:38:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:38:16,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:38:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:38:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:38:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:38:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441061207] [2023-08-26 09:38:17,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441061207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:38:17,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321776874] [2023-08-26 09:38:17,866 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:38:17,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:38:17,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:38:17,869 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:38:17,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-26 09:38:18,149 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:38:18,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:38:18,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-26 09:38:18,153 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:38:18,968 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:38:18,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:38:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:38:21,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321776874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:38:21,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:38:21,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 27 [2023-08-26 09:38:21,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336589422] [2023-08-26 09:38:21,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:38:21,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-26 09:38:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:38:21,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-26 09:38:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=650, Unknown=0, NotChecked=0, Total=812 [2023-08-26 09:38:21,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 321 [2023-08-26 09:38:21,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 874 transitions, 11777 flow. Second operand has 29 states, 29 states have (on average 111.93103448275862) internal successors, (3246), 29 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:38:21,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:38:21,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 321 [2023-08-26 09:38:21,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:38:33,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:38:56,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-26 09:39:09,055 INFO L124 PetriNetUnfolderBase]: 3294/5800 cut-off events. [2023-08-26 09:39:09,055 INFO L125 PetriNetUnfolderBase]: For 93449/93449 co-relation queries the response was YES. [2023-08-26 09:39:09,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40865 conditions, 5800 events. 3294/5800 cut-off events. For 93449/93449 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 39202 event pairs, 4 based on Foata normal form. 27/5827 useless extension candidates. Maximal degree in co-relation 40777. Up to 1302 conditions per place. [2023-08-26 09:39:09,117 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 235 selfloop transitions, 1013 changer transitions 174/1422 dead transitions. [2023-08-26 09:39:09,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1422 transitions, 21133 flow [2023-08-26 09:39:09,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-08-26 09:39:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-08-26 09:39:09,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 9844 transitions. [2023-08-26 09:39:09,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35658914728682173 [2023-08-26 09:39:09,129 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 9844 transitions. [2023-08-26 09:39:09,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 9844 transitions. [2023-08-26 09:39:09,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:39:09,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 9844 transitions. [2023-08-26 09:39:09,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 114.46511627906976) internal successors, (9844), 86 states have internal predecessors, (9844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:09,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 321.0) internal successors, (27927), 87 states have internal predecessors, (27927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:09,166 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 321.0) internal successors, (27927), 87 states have internal predecessors, (27927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:09,166 INFO L175 Difference]: Start difference. First operand has 311 places, 874 transitions, 11777 flow. Second operand 86 states and 9844 transitions. [2023-08-26 09:39:09,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1422 transitions, 21133 flow [2023-08-26 09:39:09,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1422 transitions, 20496 flow, removed 279 selfloop flow, removed 21 redundant places. [2023-08-26 09:39:09,737 INFO L231 Difference]: Finished difference. Result has 396 places, 1120 transitions, 17472 flow [2023-08-26 09:39:09,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=11407, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=874, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=765, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=17472, PETRI_PLACES=396, PETRI_TRANSITIONS=1120} [2023-08-26 09:39:09,738 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 345 predicate places. [2023-08-26 09:39:09,738 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1120 transitions, 17472 flow [2023-08-26 09:39:09,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 111.93103448275862) internal successors, (3246), 29 states have internal predecessors, (3246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:09,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:39:09,739 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:39:09,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-26 09:39:09,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:39:09,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:39:09,941 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:39:09,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1541389720, now seen corresponding path program 5 times [2023-08-26 09:39:09,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:39:09,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681222538] [2023-08-26 09:39:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:39:09,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:39:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:39:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:39:11,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:39:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681222538] [2023-08-26 09:39:11,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681222538] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:39:11,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958965351] [2023-08-26 09:39:11,303 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:39:11,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:39:11,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:39:11,307 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:39:11,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-26 09:39:11,455 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-26 09:39:11,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:39:11,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-26 09:39:11,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:39:12,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:39:12,721 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:39:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:39:14,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958965351] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:39:14,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:39:14,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2023-08-26 09:39:14,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143963307] [2023-08-26 09:39:14,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:39:14,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 09:39:14,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:39:14,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 09:39:14,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2023-08-26 09:39:14,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 321 [2023-08-26 09:39:14,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1120 transitions, 17472 flow. Second operand has 32 states, 32 states have (on average 111.96875) internal successors, (3583), 32 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:14,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:39:14,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 321 [2023-08-26 09:39:14,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:39:36,802 INFO L124 PetriNetUnfolderBase]: 4921/8630 cut-off events. [2023-08-26 09:39:36,802 INFO L125 PetriNetUnfolderBase]: For 272728/272728 co-relation queries the response was YES. [2023-08-26 09:39:36,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72442 conditions, 8630 events. 4921/8630 cut-off events. For 272728/272728 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 61105 event pairs, 102 based on Foata normal form. 20/8650 useless extension candidates. Maximal degree in co-relation 72328. Up to 1852 conditions per place. [2023-08-26 09:39:36,909 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 632 selfloop transitions, 1408 changer transitions 191/2231 dead transitions. [2023-08-26 09:39:36,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 2231 transitions, 38581 flow [2023-08-26 09:39:36,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-26 09:39:36,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-26 09:39:36,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 11170 transitions. [2023-08-26 09:39:36,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587371936923917 [2023-08-26 09:39:36,922 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 11170 transitions. [2023-08-26 09:39:36,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 11170 transitions. [2023-08-26 09:39:36,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:39:36,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 11170 transitions. [2023-08-26 09:39:36,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 115.15463917525773) internal successors, (11170), 97 states have internal predecessors, (11170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:36,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 321.0) internal successors, (31458), 98 states have internal predecessors, (31458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:36,969 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 321.0) internal successors, (31458), 98 states have internal predecessors, (31458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:36,969 INFO L175 Difference]: Start difference. First operand has 396 places, 1120 transitions, 17472 flow. Second operand 97 states and 11170 transitions. [2023-08-26 09:39:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 2231 transitions, 38581 flow [2023-08-26 09:39:38,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 2231 transitions, 36635 flow, removed 858 selfloop flow, removed 38 redundant places. [2023-08-26 09:39:38,285 INFO L231 Difference]: Finished difference. Result has 489 places, 1816 transitions, 32931 flow [2023-08-26 09:39:38,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=16823, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=825, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=32931, PETRI_PLACES=489, PETRI_TRANSITIONS=1816} [2023-08-26 09:39:38,286 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 438 predicate places. [2023-08-26 09:39:38,287 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 1816 transitions, 32931 flow [2023-08-26 09:39:38,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 111.96875) internal successors, (3583), 32 states have internal predecessors, (3583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:38,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:39:38,287 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:39:38,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-26 09:39:38,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:39:38,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:39:38,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:39:38,494 INFO L85 PathProgramCache]: Analyzing trace with hash 189545896, now seen corresponding path program 6 times [2023-08-26 09:39:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:39:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281253703] [2023-08-26 09:39:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:39:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:39:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:39:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:39:43,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:39:43,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281253703] [2023-08-26 09:39:43,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281253703] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:39:43,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018382800] [2023-08-26 09:39:43,474 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-26 09:39:43,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:39:43,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:39:43,475 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:39:43,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-26 09:39:43,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-26 09:39:43,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:39:43,756 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-26 09:39:43,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:39:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:39:44,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:39:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:39:53,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018382800] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:39:53,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:39:53,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-26 09:39:53,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812788694] [2023-08-26 09:39:53,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:39:53,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-26 09:39:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:39:53,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-26 09:39:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2023-08-26 09:39:53,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 321 [2023-08-26 09:39:53,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 1816 transitions, 32931 flow. Second operand has 28 states, 28 states have (on average 114.17857142857143) internal successors, (3197), 28 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:39:53,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:39:53,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 321 [2023-08-26 09:39:53,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:40:30,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-26 09:40:36,446 INFO L124 PetriNetUnfolderBase]: 5690/9934 cut-off events. [2023-08-26 09:40:36,447 INFO L125 PetriNetUnfolderBase]: For 296632/296632 co-relation queries the response was YES. [2023-08-26 09:40:36,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89439 conditions, 9934 events. 5690/9934 cut-off events. For 296632/296632 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 71941 event pairs, 19 based on Foata normal form. 11/9945 useless extension candidates. Maximal degree in co-relation 89293. Up to 3548 conditions per place. [2023-08-26 09:40:36,594 INFO L140 encePairwiseOnDemand]: 313/321 looper letters, 862 selfloop transitions, 1530 changer transitions 91/2483 dead transitions. [2023-08-26 09:40:36,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 2483 transitions, 48971 flow [2023-08-26 09:40:36,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-08-26 09:40:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-08-26 09:40:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 7420 transitions. [2023-08-26 09:40:36,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36690896503980613 [2023-08-26 09:40:36,604 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 7420 transitions. [2023-08-26 09:40:36,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 7420 transitions. [2023-08-26 09:40:36,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:40:36,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 7420 transitions. [2023-08-26 09:40:36,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 117.77777777777777) internal successors, (7420), 63 states have internal predecessors, (7420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:40:36,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 321.0) internal successors, (20544), 64 states have internal predecessors, (20544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:40:36,630 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 321.0) internal successors, (20544), 64 states have internal predecessors, (20544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:40:36,630 INFO L175 Difference]: Start difference. First operand has 489 places, 1816 transitions, 32931 flow. Second operand 63 states and 7420 transitions. [2023-08-26 09:40:36,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 2483 transitions, 48971 flow [2023-08-26 09:40:39,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 2483 transitions, 47906 flow, removed 498 selfloop flow, removed 29 redundant places. [2023-08-26 09:40:39,336 INFO L231 Difference]: Finished difference. Result has 523 places, 2144 transitions, 42342 flow [2023-08-26 09:40:39,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=32226, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1816, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=42342, PETRI_PLACES=523, PETRI_TRANSITIONS=2144} [2023-08-26 09:40:39,338 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 472 predicate places. [2023-08-26 09:40:39,338 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 2144 transitions, 42342 flow [2023-08-26 09:40:39,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 114.17857142857143) internal successors, (3197), 28 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:40:39,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:40:39,339 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:40:39,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-26 09:40:39,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:40:39,545 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:40:39,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:40:39,545 INFO L85 PathProgramCache]: Analyzing trace with hash 603989302, now seen corresponding path program 7 times [2023-08-26 09:40:39,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:40:39,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918707099] [2023-08-26 09:40:39,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:40:39,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:40:39,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:40:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:40:40,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:40:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918707099] [2023-08-26 09:40:40,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918707099] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:40:40,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519441495] [2023-08-26 09:40:40,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-26 09:40:40,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:40:40,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:40:40,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:40:40,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-26 09:40:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:40:40,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-26 09:40:40,730 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:40:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:40:41,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:40:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:40:43,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519441495] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:40:43,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:40:43,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-26 09:40:43,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416897931] [2023-08-26 09:40:43,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:40:43,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-26 09:40:43,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:40:43,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-26 09:40:43,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2023-08-26 09:40:43,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 321 [2023-08-26 09:40:43,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 2144 transitions, 42342 flow. Second operand has 27 states, 27 states have (on average 114.29629629629629) internal successors, (3086), 27 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:40:43,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:40:43,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 321 [2023-08-26 09:40:43,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:41:24,636 INFO L124 PetriNetUnfolderBase]: 7962/14030 cut-off events. [2023-08-26 09:41:24,636 INFO L125 PetriNetUnfolderBase]: For 460453/460453 co-relation queries the response was YES. [2023-08-26 09:41:24,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131297 conditions, 14030 events. 7962/14030 cut-off events. For 460453/460453 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 106738 event pairs, 71 based on Foata normal form. 31/14061 useless extension candidates. Maximal degree in co-relation 131143. Up to 3433 conditions per place. [2023-08-26 09:41:24,985 INFO L140 encePairwiseOnDemand]: 313/321 looper letters, 859 selfloop transitions, 2191 changer transitions 283/3333 dead transitions. [2023-08-26 09:41:24,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 3333 transitions, 71055 flow [2023-08-26 09:41:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-26 09:41:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-26 09:41:24,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 10328 transitions. [2023-08-26 09:41:24,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36561880487114135 [2023-08-26 09:41:24,995 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 10328 transitions. [2023-08-26 09:41:24,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 10328 transitions. [2023-08-26 09:41:24,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:41:24,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 10328 transitions. [2023-08-26 09:41:25,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 117.36363636363636) internal successors, (10328), 88 states have internal predecessors, (10328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:25,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 321.0) internal successors, (28569), 89 states have internal predecessors, (28569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:25,033 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 321.0) internal successors, (28569), 89 states have internal predecessors, (28569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:25,033 INFO L175 Difference]: Start difference. First operand has 523 places, 2144 transitions, 42342 flow. Second operand 88 states and 10328 transitions. [2023-08-26 09:41:25,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 3333 transitions, 71055 flow [2023-08-26 09:41:30,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 3333 transitions, 70018 flow, removed 501 selfloop flow, removed 13 redundant places. [2023-08-26 09:41:30,183 INFO L231 Difference]: Finished difference. Result has 616 places, 2800 transitions, 62133 flow [2023-08-26 09:41:30,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=41789, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1578, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=62133, PETRI_PLACES=616, PETRI_TRANSITIONS=2800} [2023-08-26 09:41:30,186 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 565 predicate places. [2023-08-26 09:41:30,186 INFO L495 AbstractCegarLoop]: Abstraction has has 616 places, 2800 transitions, 62133 flow [2023-08-26 09:41:30,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 114.29629629629629) internal successors, (3086), 27 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:30,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:41:30,187 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:41:30,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-26 09:41:30,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-26 09:41:30,392 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:41:30,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:41:30,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2084468520, now seen corresponding path program 3 times [2023-08-26 09:41:30,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:41:30,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496104711] [2023-08-26 09:41:30,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:41:30,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:41:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:41:30,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:41:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:41:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496104711] [2023-08-26 09:41:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496104711] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:41:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685474075] [2023-08-26 09:41:30,543 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:41:30,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:41:30,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:41:30,545 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:41:30,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-26 09:41:30,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-26 09:41:30,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:41:30,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-26 09:41:30,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:41:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:41:30,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:41:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-26 09:41:30,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685474075] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:41:30,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:41:30,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 9 [2023-08-26 09:41:30,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118158236] [2023-08-26 09:41:30,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:41:30,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-26 09:41:30,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:41:30,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-26 09:41:30,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-26 09:41:30,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 321 [2023-08-26 09:41:30,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 616 places, 2800 transitions, 62133 flow. Second operand has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:30,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:41:30,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 321 [2023-08-26 09:41:30,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:41:38,471 INFO L124 PetriNetUnfolderBase]: 7176/12333 cut-off events. [2023-08-26 09:41:38,471 INFO L125 PetriNetUnfolderBase]: For 431656/431656 co-relation queries the response was YES. [2023-08-26 09:41:38,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124222 conditions, 12333 events. 7176/12333 cut-off events. For 431656/431656 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 89247 event pairs, 24 based on Foata normal form. 222/12555 useless extension candidates. Maximal degree in co-relation 124045. Up to 3180 conditions per place. [2023-08-26 09:41:38,682 INFO L140 encePairwiseOnDemand]: 312/321 looper letters, 973 selfloop transitions, 2413 changer transitions 0/3386 dead transitions. [2023-08-26 09:41:38,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 3386 transitions, 82238 flow [2023-08-26 09:41:38,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-26 09:41:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-26 09:41:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1599 transitions. [2023-08-26 09:41:38,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38317757009345793 [2023-08-26 09:41:38,685 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1599 transitions. [2023-08-26 09:41:38,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1599 transitions. [2023-08-26 09:41:38,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:41:38,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1599 transitions. [2023-08-26 09:41:38,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 123.0) internal successors, (1599), 13 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:38,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 321.0) internal successors, (4494), 14 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:38,691 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 321.0) internal successors, (4494), 14 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:38,691 INFO L175 Difference]: Start difference. First operand has 616 places, 2800 transitions, 62133 flow. Second operand 13 states and 1599 transitions. [2023-08-26 09:41:38,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 3386 transitions, 82238 flow [2023-08-26 09:41:43,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 3386 transitions, 80780 flow, removed 680 selfloop flow, removed 20 redundant places. [2023-08-26 09:41:43,268 INFO L231 Difference]: Finished difference. Result has 584 places, 3269 transitions, 80827 flow [2023-08-26 09:41:43,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=58487, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1853, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=732, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=80827, PETRI_PLACES=584, PETRI_TRANSITIONS=3269} [2023-08-26 09:41:43,271 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 533 predicate places. [2023-08-26 09:41:43,271 INFO L495 AbstractCegarLoop]: Abstraction has has 584 places, 3269 transitions, 80827 flow [2023-08-26 09:41:43,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.33333333333333) internal successors, (1101), 9 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:43,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:41:43,272 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:41:43,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-26 09:41:43,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 09:41:43,486 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:41:43,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:41:43,487 INFO L85 PathProgramCache]: Analyzing trace with hash 919612376, now seen corresponding path program 8 times [2023-08-26 09:41:43,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:41:43,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016631147] [2023-08-26 09:41:43,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:41:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:41:43,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:41:45,001 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:41:45,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:41:45,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016631147] [2023-08-26 09:41:45,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016631147] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:41:45,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481665734] [2023-08-26 09:41:45,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-26 09:41:45,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:41:45,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:41:45,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:41:45,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-26 09:41:45,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-26 09:41:45,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:41:45,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 27 conjunts are in the unsatisfiable core [2023-08-26 09:41:45,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:41:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:41:45,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:41:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:41:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481665734] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:41:47,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:41:47,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 30 [2023-08-26 09:41:47,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518462629] [2023-08-26 09:41:47,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:41:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-26 09:41:47,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:41:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-26 09:41:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2023-08-26 09:41:47,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 321 [2023-08-26 09:41:47,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 3269 transitions, 80827 flow. Second operand has 32 states, 32 states have (on average 112.03125) internal successors, (3585), 32 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:41:47,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:41:47,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 321 [2023-08-26 09:41:47,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:42:05,868 WARN L234 SmtUtils]: Spent 5.40s on a formula simplification. DAG size of input: 136 DAG size of output: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-26 09:42:49,547 INFO L124 PetriNetUnfolderBase]: 8763/15220 cut-off events. [2023-08-26 09:42:49,548 INFO L125 PetriNetUnfolderBase]: For 539798/539798 co-relation queries the response was YES. [2023-08-26 09:42:49,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165508 conditions, 15220 events. 8763/15220 cut-off events. For 539798/539798 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 114776 event pairs, 112 based on Foata normal form. 38/15258 useless extension candidates. Maximal degree in co-relation 165337. Up to 4910 conditions per place. [2023-08-26 09:42:49,777 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 1066 selfloop transitions, 3060 changer transitions 212/4338 dead transitions. [2023-08-26 09:42:49,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 698 places, 4338 transitions, 112890 flow [2023-08-26 09:42:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2023-08-26 09:42:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2023-08-26 09:42:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 13144 transitions. [2023-08-26 09:42:49,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560612217255858 [2023-08-26 09:42:49,790 INFO L72 ComplementDD]: Start complementDD. Operand 115 states and 13144 transitions. [2023-08-26 09:42:49,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 13144 transitions. [2023-08-26 09:42:49,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:42:49,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 115 states and 13144 transitions. [2023-08-26 09:42:49,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 116 states, 115 states have (on average 114.29565217391304) internal successors, (13144), 115 states have internal predecessors, (13144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:42:49,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 116 states, 116 states have (on average 321.0) internal successors, (37236), 116 states have internal predecessors, (37236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:42:49,831 INFO L81 ComplementDD]: Finished complementDD. Result has 116 states, 116 states have (on average 321.0) internal successors, (37236), 116 states have internal predecessors, (37236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:42:49,831 INFO L175 Difference]: Start difference. First operand has 584 places, 3269 transitions, 80827 flow. Second operand 115 states and 13144 transitions. [2023-08-26 09:42:49,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 698 places, 4338 transitions, 112890 flow [2023-08-26 09:42:57,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 4338 transitions, 109587 flow, removed 1296 selfloop flow, removed 5 redundant places. [2023-08-26 09:42:57,753 INFO L231 Difference]: Finished difference. Result has 758 places, 3928 transitions, 103739 flow [2023-08-26 09:42:57,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=79066, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2456, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=728, PETRI_DIFFERENCE_SUBTRAHEND_STATES=115, PETRI_FLOW=103739, PETRI_PLACES=758, PETRI_TRANSITIONS=3928} [2023-08-26 09:42:57,755 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 707 predicate places. [2023-08-26 09:42:57,756 INFO L495 AbstractCegarLoop]: Abstraction has has 758 places, 3928 transitions, 103739 flow [2023-08-26 09:42:57,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 112.03125) internal successors, (3585), 32 states have internal predecessors, (3585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:42:57,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:42:57,756 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:42:57,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-26 09:42:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 09:42:57,957 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:42:57,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:42:57,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1418628138, now seen corresponding path program 9 times [2023-08-26 09:42:57,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:42:57,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988100653] [2023-08-26 09:42:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:42:57,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:42:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:42:58,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:42:58,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:42:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988100653] [2023-08-26 09:42:58,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988100653] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:42:58,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668248085] [2023-08-26 09:42:58,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-26 09:42:58,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:42:58,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:42:58,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:42:58,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-26 09:42:58,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-26 09:42:58,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:42:58,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-26 09:42:58,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:43:00,477 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:43:00,477 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:43:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:43:00,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668248085] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:43:00,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:43:00,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 11] total 22 [2023-08-26 09:43:00,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694761920] [2023-08-26 09:43:00,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:43:00,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-26 09:43:00,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:43:00,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-26 09:43:00,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-08-26 09:43:00,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 321 [2023-08-26 09:43:00,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 3928 transitions, 103739 flow. Second operand has 23 states, 23 states have (on average 107.17391304347827) internal successors, (2465), 23 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:43:00,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:43:00,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 321 [2023-08-26 09:43:00,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:43:21,146 INFO L124 PetriNetUnfolderBase]: 11228/19373 cut-off events. [2023-08-26 09:43:21,146 INFO L125 PetriNetUnfolderBase]: For 723688/723688 co-relation queries the response was YES. [2023-08-26 09:43:21,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218280 conditions, 19373 events. 11228/19373 cut-off events. For 723688/723688 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 148451 event pairs, 25 based on Foata normal form. 126/19499 useless extension candidates. Maximal degree in co-relation 218045. Up to 4972 conditions per place. [2023-08-26 09:43:21,565 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 1518 selfloop transitions, 4235 changer transitions 2/5755 dead transitions. [2023-08-26 09:43:21,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 806 places, 5755 transitions, 160078 flow [2023-08-26 09:43:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-08-26 09:43:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-08-26 09:43:21,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 8402 transitions. [2023-08-26 09:43:21,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3444007214297426 [2023-08-26 09:43:21,573 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 8402 transitions. [2023-08-26 09:43:21,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 8402 transitions. [2023-08-26 09:43:21,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:43:21,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 8402 transitions. [2023-08-26 09:43:21,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 110.55263157894737) internal successors, (8402), 76 states have internal predecessors, (8402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:43:21,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 321.0) internal successors, (24717), 77 states have internal predecessors, (24717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:43:21,599 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 321.0) internal successors, (24717), 77 states have internal predecessors, (24717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:43:21,599 INFO L175 Difference]: Start difference. First operand has 758 places, 3928 transitions, 103739 flow. Second operand 76 states and 8402 transitions. [2023-08-26 09:43:21,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 806 places, 5755 transitions, 160078 flow [2023-08-26 09:43:38,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 763 places, 5755 transitions, 152395 flow, removed 2004 selfloop flow, removed 43 redundant places. [2023-08-26 09:43:38,393 INFO L231 Difference]: Finished difference. Result has 788 places, 5300 transitions, 151205 flow [2023-08-26 09:43:38,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=99528, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3011, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=809, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=151205, PETRI_PLACES=788, PETRI_TRANSITIONS=5300} [2023-08-26 09:43:38,396 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 737 predicate places. [2023-08-26 09:43:38,396 INFO L495 AbstractCegarLoop]: Abstraction has has 788 places, 5300 transitions, 151205 flow [2023-08-26 09:43:38,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 107.17391304347827) internal successors, (2465), 23 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:43:38,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:43:38,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:43:38,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-26 09:43:38,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-26 09:43:38,597 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:43:38,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:43:38,597 INFO L85 PathProgramCache]: Analyzing trace with hash -742906426, now seen corresponding path program 10 times [2023-08-26 09:43:38,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:43:38,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75560987] [2023-08-26 09:43:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:43:38,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:43:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:43:38,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:43:38,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:43:38,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75560987] [2023-08-26 09:43:38,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75560987] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:43:38,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474683032] [2023-08-26 09:43:38,765 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-26 09:43:38,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:43:38,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:43:38,766 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:43:38,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-26 09:43:38,879 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-26 09:43:38,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:43:38,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-26 09:43:38,882 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:43:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:43:39,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:43:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 09:43:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474683032] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:43:39,136 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:43:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-08-26 09:43:39,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777625857] [2023-08-26 09:43:39,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:43:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-26 09:43:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:43:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-26 09:43:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-08-26 09:43:39,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 321 [2023-08-26 09:43:39,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 788 places, 5300 transitions, 151205 flow. Second operand has 12 states, 12 states have (on average 117.83333333333333) internal successors, (1414), 12 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:43:39,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:43:39,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 321 [2023-08-26 09:43:39,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:44:18,639 INFO L124 PetriNetUnfolderBase]: 19124/32861 cut-off events. [2023-08-26 09:44:18,639 INFO L125 PetriNetUnfolderBase]: For 1056062/1056062 co-relation queries the response was YES. [2023-08-26 09:44:19,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375017 conditions, 32861 events. 19124/32861 cut-off events. For 1056062/1056062 co-relation queries the response was YES. Maximal size of possible extension queue 1299. Compared 268563 event pairs, 250 based on Foata normal form. 84/32945 useless extension candidates. Maximal degree in co-relation 374784. Up to 8168 conditions per place. [2023-08-26 09:44:19,638 INFO L140 encePairwiseOnDemand]: 314/321 looper letters, 2450 selfloop transitions, 6744 changer transitions 2/9196 dead transitions. [2023-08-26 09:44:19,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 9196 transitions, 281533 flow [2023-08-26 09:44:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-26 09:44:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-26 09:44:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3167 transitions. [2023-08-26 09:44:19,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37946321591181403 [2023-08-26 09:44:19,641 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3167 transitions. [2023-08-26 09:44:19,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3167 transitions. [2023-08-26 09:44:19,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:44:19,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3167 transitions. [2023-08-26 09:44:19,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 121.8076923076923) internal successors, (3167), 26 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:44:19,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 321.0) internal successors, (8667), 27 states have internal predecessors, (8667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:44:19,649 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 321.0) internal successors, (8667), 27 states have internal predecessors, (8667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:44:19,649 INFO L175 Difference]: Start difference. First operand has 788 places, 5300 transitions, 151205 flow. Second operand 26 states and 3167 transitions. [2023-08-26 09:44:19,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 9196 transitions, 281533 flow [2023-08-26 09:45:02,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 808 places, 9196 transitions, 276963 flow, removed 2252 selfloop flow, removed 5 redundant places. [2023-08-26 09:45:02,859 INFO L231 Difference]: Finished difference. Result has 822 places, 8273 transitions, 263559 flow [2023-08-26 09:45:02,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=148339, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3999, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=263559, PETRI_PLACES=822, PETRI_TRANSITIONS=8273} [2023-08-26 09:45:02,863 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 771 predicate places. [2023-08-26 09:45:02,863 INFO L495 AbstractCegarLoop]: Abstraction has has 822 places, 8273 transitions, 263559 flow [2023-08-26 09:45:02,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 117.83333333333333) internal successors, (1414), 12 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:45:02,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 09:45:02,863 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 09:45:02,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-26 09:45:03,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-26 09:45:03,064 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2023-08-26 09:45:03,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 09:45:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1099033650, now seen corresponding path program 11 times [2023-08-26 09:45:03,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 09:45:03,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522022168] [2023-08-26 09:45:03,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 09:45:03,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 09:45:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 09:45:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-26 09:45:03,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 09:45:03,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522022168] [2023-08-26 09:45:03,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522022168] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 09:45:03,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572088837] [2023-08-26 09:45:03,980 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-26 09:45:03,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 09:45:03,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 09:45:03,981 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 09:45:03,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-26 09:45:04,211 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-26 09:45:04,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-26 09:45:04,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-26 09:45:04,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 09:45:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:45:05,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 09:45:06,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 09:45:06,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572088837] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 09:45:06,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 09:45:06,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 31 [2023-08-26 09:45:06,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848372298] [2023-08-26 09:45:06,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 09:45:06,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-26 09:45:06,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 09:45:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-26 09:45:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=823, Unknown=0, NotChecked=0, Total=1056 [2023-08-26 09:45:06,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 321 [2023-08-26 09:45:06,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 8273 transitions, 263559 flow. Second operand has 33 states, 33 states have (on average 103.03030303030303) internal successors, (3400), 33 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:45:06,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 09:45:06,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 321 [2023-08-26 09:45:06,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 09:46:30,994 INFO L124 PetriNetUnfolderBase]: 21234/36475 cut-off events. [2023-08-26 09:46:30,994 INFO L125 PetriNetUnfolderBase]: For 1198252/1198252 co-relation queries the response was YES. [2023-08-26 09:46:32,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435320 conditions, 36475 events. 21234/36475 cut-off events. For 1198252/1198252 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 301710 event pairs, 64 based on Foata normal form. 104/36579 useless extension candidates. Maximal degree in co-relation 435076. Up to 8932 conditions per place. [2023-08-26 09:46:32,138 INFO L140 encePairwiseOnDemand]: 310/321 looper letters, 0 selfloop transitions, 0 changer transitions 9374/9374 dead transitions. [2023-08-26 09:46:32,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 9374 transitions, 313243 flow [2023-08-26 09:46:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-08-26 09:46:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-08-26 09:46:32,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 5905 transitions. [2023-08-26 09:46:32,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32849354695149086 [2023-08-26 09:46:32,142 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 5905 transitions. [2023-08-26 09:46:32,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 5905 transitions. [2023-08-26 09:46:32,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 09:46:32,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 5905 transitions. [2023-08-26 09:46:32,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 105.44642857142857) internal successors, (5905), 56 states have internal predecessors, (5905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:46:32,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 321.0) internal successors, (18297), 57 states have internal predecessors, (18297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:46:32,159 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 321.0) internal successors, (18297), 57 states have internal predecessors, (18297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:46:32,159 INFO L175 Difference]: Start difference. First operand has 822 places, 8273 transitions, 263559 flow. Second operand 56 states and 5905 transitions. [2023-08-26 09:46:32,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 9374 transitions, 313243 flow [2023-08-26 09:47:24,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 868 places, 9374 transitions, 311021 flow, removed 970 selfloop flow, removed 8 redundant places. [2023-08-26 09:47:24,280 INFO L231 Difference]: Finished difference. Result has 868 places, 0 transitions, 0 flow [2023-08-26 09:47:24,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=261501, PETRI_DIFFERENCE_MINUEND_PLACES=813, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=0, PETRI_PLACES=868, PETRI_TRANSITIONS=0} [2023-08-26 09:47:24,285 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 817 predicate places. [2023-08-26 09:47:24,285 INFO L495 AbstractCegarLoop]: Abstraction has has 868 places, 0 transitions, 0 flow [2023-08-26 09:47:24,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 103.03030303030303) internal successors, (3400), 33 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 09:47:24,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (45 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2023-08-26 09:47:24,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2023-08-26 09:47:24,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2023-08-26 09:47:24,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2023-08-26 09:47:24,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2023-08-26 09:47:24,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2023-08-26 09:47:24,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2023-08-26 09:47:24,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2023-08-26 09:47:24,291 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONASSERT (17 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2023-08-26 09:47:24,292 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2023-08-26 09:47:24,293 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2023-08-26 09:47:24,294 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2023-08-26 09:47:24,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-26 09:47:24,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-26 09:47:24,500 INFO L445 BasicCegarLoop]: Path program histogram: [11, 3, 1, 1, 1] [2023-08-26 09:47:24,504 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 09:47:24,504 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 09:47:24,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:47:24 BasicIcfg [2023-08-26 09:47:24,506 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 09:47:24,506 INFO L158 Benchmark]: Toolchain (without parser) took 689525.96ms. Allocated memory was 394.3MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 349.4MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-08-26 09:47:24,506 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 394.3MB. Free memory was 371.7MB in the beginning and 371.6MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 09:47:24,507 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.73ms. Allocated memory is still 394.3MB. Free memory was 348.4MB in the beginning and 336.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-26 09:47:24,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.57ms. Allocated memory is still 394.3MB. Free memory was 336.8MB in the beginning and 335.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:47:24,507 INFO L158 Benchmark]: Boogie Preprocessor took 40.24ms. Allocated memory is still 394.3MB. Free memory was 335.8MB in the beginning and 333.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 09:47:24,507 INFO L158 Benchmark]: RCFGBuilder took 565.43ms. Allocated memory is still 394.3MB. Free memory was 333.7MB in the beginning and 300.1MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. [2023-08-26 09:47:24,507 INFO L158 Benchmark]: TraceAbstraction took 688595.87ms. Allocated memory was 394.3MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 300.1MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. [2023-08-26 09:47:24,508 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 394.3MB. Free memory was 371.7MB in the beginning and 371.6MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 265.73ms. Allocated memory is still 394.3MB. Free memory was 348.4MB in the beginning and 336.8MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.57ms. Allocated memory is still 394.3MB. Free memory was 336.8MB in the beginning and 335.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.24ms. Allocated memory is still 394.3MB. Free memory was 335.8MB in the beginning and 333.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 565.43ms. Allocated memory is still 394.3MB. Free memory was 333.7MB in the beginning and 300.1MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.0GB. * TraceAbstraction took 688595.87ms. Allocated memory was 394.3MB in the beginning and 7.5GB in the end (delta: 7.1GB). Free memory was 300.1MB in the beginning and 1.9GB in the end (delta: -1.6GB). Peak memory consumption was 5.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 146 PlacesBefore, 51 PlacesAfterwards, 146 TransitionsBefore, 46 TransitionsAfterwards, 1560 CoEnabledTransitionPairs, 8 FixpointIterations, 111 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 10 TrivialYvCompositions, 4 ConcurrentYvCompositions, 5 ChoiceCompositions, 164 TotalNumberOfCompositions, 4058 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2040, independent: 1919, independent conditional: 0, independent unconditional: 1919, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 680, independent: 669, independent conditional: 0, independent unconditional: 669, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2040, independent: 1250, independent conditional: 0, independent unconditional: 1250, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 680, unknown conditional: 0, unknown unconditional: 680] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 85, Positive conditional cache size: 0, Positive unconditional cache size: 85, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 42]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 46]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 47]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 47]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 48]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 48]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 52]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 52]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 61]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 65]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 65]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 68]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 71]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 81]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 82]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 83]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 83]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 84]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 84]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 86]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 86]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 91]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 92]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 94]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 94]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 94]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 21]: 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 5 procedures, 183 locations, 46 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: 688.5s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 627.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 4553 SdHoareTripleChecker+Valid, 66.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4553 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 64.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17765 IncrementalHoareTripleChecker+Invalid, 18903 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1134 mSolverCounterUnsat, 0 mSDtfsCounter, 17765 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1443 GetRequests, 342 SyntacticMatches, 21 SemanticMatches, 1080 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34008 ImplicationChecksByTransitivity, 285.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=263559occurred in iteration=16, InterpolantAutomatonStates: 928, 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: 0.2s SsaConstructionTime, 2.3s SatisfiabilityAnalysisTime, 50.6s InterpolantComputationTime, 597 NumberOfCodeBlocks, 594 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 830 ConstructedInterpolants, 0 QuantifiedInterpolants, 33255 SizeOfPredicates, 208 NumberOfNonLiveVariables, 2364 ConjunctsInSsa, 365 ConjunctsInUnsatCore, 43 InterpolantComputations, 4 PerfectInterpolantSequences, 51/311 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 29 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 09:47:24,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...