/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/goblint-regression/28-race_reach_60-invariant_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 07:50:21,392 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 07:50:21,455 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 07:50:21,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 07:50:21,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 07:50:21,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 07:50:21,483 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 07:50:21,484 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 07:50:21,484 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 07:50:21,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 07:50:21,487 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 07:50:21,487 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 07:50:21,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 07:50:21,488 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 07:50:21,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 07:50:21,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 07:50:21,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 07:50:21,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 07:50:21,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 07:50:21,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 07:50:21,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 07:50:21,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 07:50:21,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 07:50:21,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 07:50:21,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 07:50:21,491 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 07:50:21,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 07:50:21,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:50:21,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 07:50:21,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 07:50:21,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 07:50:21,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 07:50:21,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 07:50:21,493 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 07:50:21,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 07:50:21,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-26 07:50:21,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 07:50:21,780 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 07:50:21,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 07:50:21,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 07:50:21,782 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 07:50:21,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-26 07:50:22,808 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 07:50:22,990 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 07:50:22,991 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-26 07:50:23,002 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13153a9b2/dceb3ff220684d10b0b710408ddaeda7/FLAGbc57de0c7 [2023-08-26 07:50:23,011 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13153a9b2/dceb3ff220684d10b0b710408ddaeda7 [2023-08-26 07:50:23,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 07:50:23,013 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 07:50:23,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 07:50:23,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 07:50:23,015 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 07:50:23,016 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a9d952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23, skipping insertion in model container [2023-08-26 07:50:23,017 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,043 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 07:50:23,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:50:23,225 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 07:50:23,236 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:50:23,237 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 07:50:23,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 07:50:23,282 INFO L206 MainTranslator]: Completed translation [2023-08-26 07:50:23,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23 WrapperNode [2023-08-26 07:50:23,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 07:50:23,284 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 07:50:23,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 07:50:23,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 07:50:23,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,337 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 184 [2023-08-26 07:50:23,337 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 07:50:23,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 07:50:23,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 07:50:23,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 07:50:23,344 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,344 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,357 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,365 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,375 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 07:50:23,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 07:50:23,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 07:50:23,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 07:50:23,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (1/1) ... [2023-08-26 07:50:23,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 07:50:23,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:50:23,397 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 07:50:23,405 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 07:50:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 07:50:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 07:50:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 07:50:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 07:50:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 07:50:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 07:50:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 07:50:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 07:50:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 07:50:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 07:50:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 07:50:23,439 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 07:50:23,547 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 07:50:23,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 07:50:23,790 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 07:50:23,798 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 07:50:23,798 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-26 07:50:23,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:50:23 BoogieIcfgContainer [2023-08-26 07:50:23,802 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 07:50:23,804 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 07:50:23,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 07:50:23,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 07:50:23,806 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 07:50:23" (1/3) ... [2023-08-26 07:50:23,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd9917c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:50:23, skipping insertion in model container [2023-08-26 07:50:23,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 07:50:23" (2/3) ... [2023-08-26 07:50:23,807 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd9917c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 07:50:23, skipping insertion in model container [2023-08-26 07:50:23,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 07:50:23" (3/3) ... [2023-08-26 07:50:23,808 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-26 07:50:23,820 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 07:50:23,820 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-26 07:50:23,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 07:50:23,884 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 07:50:23,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:23,976 INFO L124 PetriNetUnfolderBase]: 36/281 cut-off events. [2023-08-26 07:50:23,976 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:50:23,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 281 events. 36/281 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1207 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 162. Up to 6 conditions per place. [2023-08-26 07:50:23,986 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:23,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:23,992 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:23,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:23,999 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:23,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:24,032 INFO L124 PetriNetUnfolderBase]: 36/281 cut-off events. [2023-08-26 07:50:24,032 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:50:24,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 281 events. 36/281 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1207 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 162. Up to 6 conditions per place. [2023-08-26 07:50:24,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 13064 [2023-08-26 07:50:26,282 INFO L134 LiptonReduction]: Checked pairs total: 48861 [2023-08-26 07:50:26,283 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-26 07:50:26,292 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:50:26,296 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;@7c7ccb61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:26,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-26 07:50:26,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:26,299 INFO L124 PetriNetUnfolderBase]: 2/23 cut-off events. [2023-08-26 07:50:26,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:26,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:26,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:50:26,300 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 07:50:26,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:26,303 INFO L85 PathProgramCache]: Analyzing trace with hash 689011295, now seen corresponding path program 1 times [2023-08-26 07:50:26,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:26,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262772278] [2023-08-26 07:50:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:26,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:26,437 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 07:50:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262772278] [2023-08-26 07:50:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262772278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:26,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:26,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:50:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616759947] [2023-08-26 07:50:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:26,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:26,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:26,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:26,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 329 [2023-08-26 07:50:26,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:26,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 329 [2023-08-26 07:50:26,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:26,575 INFO L124 PetriNetUnfolderBase]: 289/877 cut-off events. [2023-08-26 07:50:26,575 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:50:26,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 877 events. 289/877 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5262 event pairs, 221 based on Foata normal form. 119/843 useless extension candidates. Maximal degree in co-relation 1454. Up to 581 conditions per place. [2023-08-26 07:50:26,582 INFO L140 encePairwiseOnDemand]: 306/329 looper letters, 51 selfloop transitions, 2 changer transitions 2/95 dead transitions. [2023-08-26 07:50:26,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 95 transitions, 308 flow [2023-08-26 07:50:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-08-26 07:50:26,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5754812563323202 [2023-08-26 07:50:26,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-08-26 07:50:26,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-08-26 07:50:26,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:26,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-08-26 07:50:26,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,610 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 208 flow. Second operand 3 states and 568 transitions. [2023-08-26 07:50:26,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 95 transitions, 308 flow [2023-08-26 07:50:26,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 95 transitions, 308 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:50:26,615 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 165 flow [2023-08-26 07:50:26,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-08-26 07:50:26,620 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2023-08-26 07:50:26,621 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 165 flow [2023-08-26 07:50:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:26,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:50:26,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 07:50:26,622 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 07:50:26,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:26,623 INFO L85 PathProgramCache]: Analyzing trace with hash -115989533, now seen corresponding path program 1 times [2023-08-26 07:50:26,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:26,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003902098] [2023-08-26 07:50:26,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:26,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:26,690 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 07:50:26,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:26,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003902098] [2023-08-26 07:50:26,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003902098] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:26,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:26,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:50:26,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61056593] [2023-08-26 07:50:26,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:26,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:26,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:26,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 329 [2023-08-26 07:50:26,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:26,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 329 [2023-08-26 07:50:26,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:26,917 INFO L124 PetriNetUnfolderBase]: 870/2166 cut-off events. [2023-08-26 07:50:26,917 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 07:50:26,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 2166 events. 870/2166 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13864 event pairs, 326 based on Foata normal form. 0/1759 useless extension candidates. Maximal degree in co-relation 4078. Up to 1070 conditions per place. [2023-08-26 07:50:26,926 INFO L140 encePairwiseOnDemand]: 304/329 looper letters, 89 selfloop transitions, 18 changer transitions 0/125 dead transitions. [2023-08-26 07:50:26,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 125 transitions, 482 flow [2023-08-26 07:50:26,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:26,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:26,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-26 07:50:26,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2023-08-26 07:50:26,928 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-26 07:50:26,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-26 07:50:26,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:26,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-26 07:50:26,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,949 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,949 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 165 flow. Second operand 3 states and 522 transitions. [2023-08-26 07:50:26,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 125 transitions, 482 flow [2023-08-26 07:50:26,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 125 transitions, 476 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:50:26,952 INFO L231 Difference]: Finished difference. Result has 83 places, 94 transitions, 319 flow [2023-08-26 07:50:26,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=319, PETRI_PLACES=83, PETRI_TRANSITIONS=94} [2023-08-26 07:50:26,953 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2023-08-26 07:50:26,953 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 94 transitions, 319 flow [2023-08-26 07:50:26,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:26,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:26,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:26,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 07:50:26,955 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 07:50:26,956 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:26,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1619072061, now seen corresponding path program 1 times [2023-08-26 07:50:26,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:26,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771135119] [2023-08-26 07:50:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:26,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:27,067 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 07:50:27,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:27,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771135119] [2023-08-26 07:50:27,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771135119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:27,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:50:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206190145] [2023-08-26 07:50:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:27,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 329 [2023-08-26 07:50:27,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 94 transitions, 319 flow. Second operand has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:27,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 329 [2023-08-26 07:50:27,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:27,249 INFO L124 PetriNetUnfolderBase]: 756/2077 cut-off events. [2023-08-26 07:50:27,250 INFO L125 PetriNetUnfolderBase]: For 537/543 co-relation queries the response was YES. [2023-08-26 07:50:27,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 2077 events. 756/2077 cut-off events. For 537/543 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13837 event pairs, 372 based on Foata normal form. 1/1860 useless extension candidates. Maximal degree in co-relation 4456. Up to 1013 conditions per place. [2023-08-26 07:50:27,257 INFO L140 encePairwiseOnDemand]: 318/329 looper letters, 80 selfloop transitions, 7 changer transitions 4/129 dead transitions. [2023-08-26 07:50:27,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 129 transitions, 597 flow [2023-08-26 07:50:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:27,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:27,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-08-26 07:50:27,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5592705167173252 [2023-08-26 07:50:27,259 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-08-26 07:50:27,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-08-26 07:50:27,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:27,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-08-26 07:50:27,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,262 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,262 INFO L175 Difference]: Start difference. First operand has 83 places, 94 transitions, 319 flow. Second operand 3 states and 552 transitions. [2023-08-26 07:50:27,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 129 transitions, 597 flow [2023-08-26 07:50:27,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 129 transitions, 549 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:50:27,268 INFO L231 Difference]: Finished difference. Result has 84 places, 96 transitions, 327 flow [2023-08-26 07:50:27,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=327, PETRI_PLACES=84, PETRI_TRANSITIONS=96} [2023-08-26 07:50:27,269 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2023-08-26 07:50:27,272 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 96 transitions, 327 flow [2023-08-26 07:50:27,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:27,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:27,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 07:50:27,274 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 07:50:27,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1277738754, now seen corresponding path program 1 times [2023-08-26 07:50:27,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:27,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209635225] [2023-08-26 07:50:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:27,324 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 07:50:27,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:27,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209635225] [2023-08-26 07:50:27,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209635225] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:50:27,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434048559] [2023-08-26 07:50:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:27,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:50:27,327 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 07:50:27,354 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 07:50:27,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:27,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:50:27,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:50:27,415 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 07:50:27,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:50:27,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434048559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:27,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:50:27,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:50:27,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053896296] [2023-08-26 07:50:27,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:27,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:27,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:27,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:27,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:50:27,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 329 [2023-08-26 07:50:27,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 96 transitions, 327 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:27,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 329 [2023-08-26 07:50:27,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:27,597 INFO L124 PetriNetUnfolderBase]: 961/2398 cut-off events. [2023-08-26 07:50:27,598 INFO L125 PetriNetUnfolderBase]: For 538/561 co-relation queries the response was YES. [2023-08-26 07:50:27,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5569 conditions, 2398 events. 961/2398 cut-off events. For 538/561 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 15411 event pairs, 612 based on Foata normal form. 4/2051 useless extension candidates. Maximal degree in co-relation 5552. Up to 1883 conditions per place. [2023-08-26 07:50:27,607 INFO L140 encePairwiseOnDemand]: 319/329 looper letters, 99 selfloop transitions, 14 changer transitions 0/134 dead transitions. [2023-08-26 07:50:27,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 134 transitions, 675 flow [2023-08-26 07:50:27,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-26 07:50:27,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49341438703140833 [2023-08-26 07:50:27,609 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-26 07:50:27,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-26 07:50:27,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:27,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-26 07:50:27,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 329.0) internal successors, (1316), 4 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,612 INFO L175 Difference]: Start difference. First operand has 84 places, 96 transitions, 327 flow. Second operand 3 states and 487 transitions. [2023-08-26 07:50:27,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 134 transitions, 675 flow [2023-08-26 07:50:27,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 134 transitions, 661 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:50:27,616 INFO L231 Difference]: Finished difference. Result has 85 places, 108 transitions, 439 flow [2023-08-26 07:50:27,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=85, PETRI_TRANSITIONS=108} [2023-08-26 07:50:27,617 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2023-08-26 07:50:27,617 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 108 transitions, 439 flow [2023-08-26 07:50:27,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:27,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:27,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-26 07:50:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:27,823 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-26 07:50:27,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1650140159, now seen corresponding path program 1 times [2023-08-26 07:50:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:27,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141698318] [2023-08-26 07:50:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:27,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:27,853 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 07:50:27,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141698318] [2023-08-26 07:50:27,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141698318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:50:27,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364505310] [2023-08-26 07:50:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:27,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:27,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:50:27,855 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 07:50:27,857 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 07:50:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:27,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:50:27,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:50:27,936 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 07:50:27,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:50:27,955 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 07:50:27,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364505310] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:50:27,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:50:27,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:50:27,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391383686] [2023-08-26 07:50:27,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:50:27,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:50:27,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:27,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:50:27,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:50:27,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 329 [2023-08-26 07:50:27,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 108 transitions, 439 flow. Second operand has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:27,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 329 [2023-08-26 07:50:27,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:27,977 INFO L124 PetriNetUnfolderBase]: 12/39 cut-off events. [2023-08-26 07:50:27,978 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-26 07:50:27,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 39 events. 12/39 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 7/44 useless extension candidates. Maximal degree in co-relation 95. Up to 26 conditions per place. [2023-08-26 07:50:27,978 INFO L140 encePairwiseOnDemand]: 326/329 looper letters, 0 selfloop transitions, 0 changer transitions 21/21 dead transitions. [2023-08-26 07:50:27,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 101 flow [2023-08-26 07:50:27,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 07:50:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 07:50:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 662 transitions. [2023-08-26 07:50:27,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030395136778115 [2023-08-26 07:50:27,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 662 transitions. [2023-08-26 07:50:27,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 662 transitions. [2023-08-26 07:50:27,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:27,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 662 transitions. [2023-08-26 07:50:27,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,984 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,984 INFO L175 Difference]: Start difference. First operand has 85 places, 108 transitions, 439 flow. Second operand 4 states and 662 transitions. [2023-08-26 07:50:27,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 101 flow [2023-08-26 07:50:27,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 79 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-08-26 07:50:27,984 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-26 07:50:27,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=31, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-26 07:50:27,985 INFO L281 CegarLoopForPetriNet]: 82 programPoint places, -61 predicate places. [2023-08-26 07:50:27,985 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-26 07:50:27,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 164.0) internal successors, (1148), 7 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (20 of 21 remaining) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (15 of 21 remaining) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (14 of 21 remaining) [2023-08-26 07:50:27,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (9 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-26 07:50:27,989 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-26 07:50:27,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-26 07:50:27,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-26 07:50:27,990 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-26 07:50:27,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 07:50:28,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:28,199 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 07:50:28,201 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:50:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:28,234 INFO L124 PetriNetUnfolderBase]: 36/281 cut-off events. [2023-08-26 07:50:28,234 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 07:50:28,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 281 events. 36/281 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1207 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 162. Up to 6 conditions per place. [2023-08-26 07:50:28,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 195 transitions, 398 flow [2023-08-26 07:50:28,235 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 190 transitions, 385 flow [2023-08-26 07:50:28,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:28,236 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 190 transitions, 385 flow [2023-08-26 07:50:28,236 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 190 transitions, 385 flow [2023-08-26 07:50:28,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 190 transitions, 385 flow [2023-08-26 07:50:28,251 INFO L124 PetriNetUnfolderBase]: 35/276 cut-off events. [2023-08-26 07:50:28,251 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:28,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 276 events. 35/276 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1187 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 162. Up to 6 conditions per place. [2023-08-26 07:50:28,255 INFO L119 LiptonReduction]: Number of co-enabled transitions 13064 [2023-08-26 07:50:30,181 INFO L134 LiptonReduction]: Checked pairs total: 49099 [2023-08-26 07:50:30,181 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-26 07:50:30,182 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:50:30,183 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;@7c7ccb61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:30,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:50:30,185 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:30,185 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-08-26 07:50:30,185 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:30,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:30,185 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 07:50:30,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:50:30,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:30,185 INFO L85 PathProgramCache]: Analyzing trace with hash -548564493, now seen corresponding path program 1 times [2023-08-26 07:50:30,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:30,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848454583] [2023-08-26 07:50:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:30,203 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:50:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:30,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:50:30,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:50:30,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:50:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 07:50:30,224 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:50:30,225 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:50:30,225 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:50:30,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 07:50:30,251 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 07:50:30,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:30,281 INFO L124 PetriNetUnfolderBase]: 62/471 cut-off events. [2023-08-26 07:50:30,281 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:30,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 471 events. 62/471 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2253 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 283. Up to 9 conditions per place. [2023-08-26 07:50:30,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:30,287 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:30,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:30,287 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:30,287 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:30,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:30,342 INFO L124 PetriNetUnfolderBase]: 62/471 cut-off events. [2023-08-26 07:50:30,342 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:30,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 471 events. 62/471 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2253 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 283. Up to 9 conditions per place. [2023-08-26 07:50:30,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 37772 [2023-08-26 07:50:32,566 INFO L134 LiptonReduction]: Checked pairs total: 150587 [2023-08-26 07:50:32,566 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-26 07:50:32,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:50:32,567 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;@7c7ccb61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:32,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-26 07:50:32,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:32,569 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2023-08-26 07:50:32,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:32,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:32,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:50:32,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONASSERT, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-26 07:50:32,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:32,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1305889557, now seen corresponding path program 1 times [2023-08-26 07:50:32,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:32,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122911059] [2023-08-26 07:50:32,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:32,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:32,593 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 07:50:32,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:32,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122911059] [2023-08-26 07:50:32,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122911059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:32,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:32,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:50:32,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169395534] [2023-08-26 07:50:32,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:32,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:32,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:32,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:32,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 443 [2023-08-26 07:50:32,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 151 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:32,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:32,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 443 [2023-08-26 07:50:32,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:33,762 INFO L124 PetriNetUnfolderBase]: 9820/19153 cut-off events. [2023-08-26 07:50:33,762 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-26 07:50:33,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34293 conditions, 19153 events. 9820/19153 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 174111 event pairs, 8817 based on Foata normal form. 3179/19376 useless extension candidates. Maximal degree in co-relation 12926. Up to 15022 conditions per place. [2023-08-26 07:50:33,840 INFO L140 encePairwiseOnDemand]: 411/443 looper letters, 71 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2023-08-26 07:50:33,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 136 transitions, 436 flow [2023-08-26 07:50:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:33,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 776 transitions. [2023-08-26 07:50:33,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838976674191121 [2023-08-26 07:50:33,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 776 transitions. [2023-08-26 07:50:33,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 776 transitions. [2023-08-26 07:50:33,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:33,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 776 transitions. [2023-08-26 07:50:33,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.6666666666667) internal successors, (776), 3 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:33,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:33,846 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:33,846 INFO L175 Difference]: Start difference. First operand has 124 places, 151 transitions, 320 flow. Second operand 3 states and 776 transitions. [2023-08-26 07:50:33,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 136 transitions, 436 flow [2023-08-26 07:50:33,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 136 transitions, 436 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:50:33,849 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 268 flow [2023-08-26 07:50:33,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2023-08-26 07:50:33,850 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, -1 predicate places. [2023-08-26 07:50:33,850 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 268 flow [2023-08-26 07:50:33,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:33,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:33,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:50:33,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 07:50:33,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONASSERT, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-26 07:50:33,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1849840458, now seen corresponding path program 1 times [2023-08-26 07:50:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:33,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597633842] [2023-08-26 07:50:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:33,872 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 07:50:33,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:33,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597633842] [2023-08-26 07:50:33,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597633842] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:33,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:33,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:50:33,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014480092] [2023-08-26 07:50:33,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:33,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:33,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:33,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 443 [2023-08-26 07:50:33,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:33,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:33,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 443 [2023-08-26 07:50:33,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:38,731 INFO L124 PetriNetUnfolderBase]: 63174/108585 cut-off events. [2023-08-26 07:50:38,731 INFO L125 PetriNetUnfolderBase]: For 2182/2182 co-relation queries the response was YES. [2023-08-26 07:50:38,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209674 conditions, 108585 events. 63174/108585 cut-off events. For 2182/2182 co-relation queries the response was YES. Maximal size of possible extension queue 2095. Compared 998554 event pairs, 24822 based on Foata normal form. 0/87567 useless extension candidates. Maximal degree in co-relation 209501. Up to 58490 conditions per place. [2023-08-26 07:50:39,179 INFO L140 encePairwiseOnDemand]: 404/443 looper letters, 143 selfloop transitions, 28 changer transitions 0/199 dead transitions. [2023-08-26 07:50:39,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 199 transitions, 786 flow [2023-08-26 07:50:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:39,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:39,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2023-08-26 07:50:39,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5372460496613995 [2023-08-26 07:50:39,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2023-08-26 07:50:39,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2023-08-26 07:50:39,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:39,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2023-08-26 07:50:39,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:39,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:39,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:39,184 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 268 flow. Second operand 3 states and 714 transitions. [2023-08-26 07:50:39,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 199 transitions, 786 flow [2023-08-26 07:50:39,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 199 transitions, 783 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 07:50:39,188 INFO L231 Difference]: Finished difference. Result has 126 places, 148 transitions, 512 flow [2023-08-26 07:50:39,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=512, PETRI_PLACES=126, PETRI_TRANSITIONS=148} [2023-08-26 07:50:39,189 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, 2 predicate places. [2023-08-26 07:50:39,189 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 148 transitions, 512 flow [2023-08-26 07:50:39,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:39,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:39,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 07:50:39,190 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONASSERT === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONASSERT, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-26 07:50:39,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2021186999, now seen corresponding path program 1 times [2023-08-26 07:50:39,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:39,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042329058] [2023-08-26 07:50:39,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:39,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:39,235 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 07:50:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:39,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042329058] [2023-08-26 07:50:39,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042329058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:39,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:39,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 07:50:39,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158338512] [2023-08-26 07:50:39,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:39,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:39,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:39,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:39,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:39,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 443 [2023-08-26 07:50:39,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 148 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:39,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:39,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 443 [2023-08-26 07:50:39,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:41,726 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1332] L702-4-->t_funErr2ASSERT_VIOLATIONASSERT: Formula: (and (= |v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_15| |v_t_funThread2of2ForFork0___VERIFIER_assert_~cond#1_25|) (= (ite (= v_~x~0_99 0) 1 0) |v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_15|) (= |v_t_funThread2of2ForFork0___VERIFIER_assert_~cond#1_25| 0)) InVars {~x~0=v_~x~0_99} OutVars{t_funThread2of2ForFork0___VERIFIER_assert_~cond#1=|v_t_funThread2of2ForFork0___VERIFIER_assert_~cond#1_25|, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.base=|v_t_funThread2of2ForFork0_reach_error_#t~nondet2#1.base_17|, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.offset=|v_t_funThread2of2ForFork0_reach_error_#t~nondet2#1.offset_17|, ~x~0=v_~x~0_99, t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1=|v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_15|} AuxVars[] AssignedVars[t_funThread2of2ForFork0___VERIFIER_assert_~cond#1, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.base, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.offset, t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1][91], [30#t_funErr2ASSERT_VIOLATIONASSERTtrue, 247#(= |#race~x~0| 0), Black: 242#(= |ULTIMATE.start_main_~i~0#1| 0), 251#true, 84#t_funEXITtrue, Black: 245#true, t_funThread1of2ForFork0InUse, 176#L713-6true, t_funThread2of2ForFork0InUse]) [2023-08-26 07:50:41,726 INFO L294 olderBase$Statistics]: this new event has 47 ancestors and is cut-off event [2023-08-26 07:50:41,726 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,726 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,726 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,726 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1308] L702-4-->L690: Formula: (and (= (ite (= v_~x~0_85 0) 1 0) |v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_13|) (= |v_t_funThread2of2ForFork0___VERIFIER_assert_~cond#1_21| 0) (= |v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_13| |v_t_funThread2of2ForFork0___VERIFIER_assert_~cond#1_21|)) InVars {~x~0=v_~x~0_85} OutVars{t_funThread2of2ForFork0___VERIFIER_assert_~cond#1=|v_t_funThread2of2ForFork0___VERIFIER_assert_~cond#1_21|, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.base=|v_t_funThread2of2ForFork0_reach_error_#t~nondet2#1.base_13|, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.offset=|v_t_funThread2of2ForFork0_reach_error_#t~nondet2#1.offset_13|, ~x~0=v_~x~0_85, t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1=|v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_13|} AuxVars[] AssignedVars[t_funThread2of2ForFork0___VERIFIER_assert_~cond#1, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.base, t_funThread2of2ForFork0_reach_error_#t~nondet2#1.offset, t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1][92], [4#L690true, 247#(= |#race~x~0| 0), Black: 242#(= |ULTIMATE.start_main_~i~0#1| 0), 251#true, 84#t_funEXITtrue, Black: 245#true, t_funThread1of2ForFork0InUse, 176#L713-6true, t_funThread2of2ForFork0InUse]) [2023-08-26 07:50:41,726 INFO L294 olderBase$Statistics]: this new event has 47 ancestors and is cut-off event [2023-08-26 07:50:41,726 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,726 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,726 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,727 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1185] L702-4-->L691: Formula: (= |v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_7| (ite (= v_~x~0_71 0) 1 0)) InVars {~x~0=v_~x~0_71} OutVars{t_funThread2of2ForFork0___VERIFIER_assert_~cond#1=|v_t_funThread2of2ForFork0___VERIFIER_assert_~cond#1_13|, ~x~0=v_~x~0_71, t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1=|v_t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1_7|} AuxVars[] AssignedVars[t_funThread2of2ForFork0___VERIFIER_assert_~cond#1, t_funThread2of2ForFork0___VERIFIER_assert_#in~cond#1][93], [247#(= |#race~x~0| 0), Black: 242#(= |ULTIMATE.start_main_~i~0#1| 0), 251#true, 210#L691true, 84#t_funEXITtrue, Black: 245#true, t_funThread1of2ForFork0InUse, 176#L713-6true, t_funThread2of2ForFork0InUse]) [2023-08-26 07:50:41,727 INFO L294 olderBase$Statistics]: this new event has 47 ancestors and is cut-off event [2023-08-26 07:50:41,727 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,727 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,728 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,728 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([1243] L713-6-->L713-8: Formula: (= |v_#race~x~0_125| |v_ULTIMATE.start_main_#t~nondet17#1_50|) InVars {} OutVars{#race~x~0=|v_#race~x~0_125|, ULTIMATE.start_main_#t~nondet17#1=|v_ULTIMATE.start_main_#t~nondet17#1_50|} AuxVars[] AssignedVars[#race~x~0, ULTIMATE.start_main_#t~nondet17#1][34], [Black: 242#(= |ULTIMATE.start_main_~i~0#1| 0), 251#true, 32#L702-4true, 12#L713-8true, Black: 247#(= |#race~x~0| 0), 84#t_funEXITtrue, 245#true, t_funThread1of2ForFork0InUse, t_funThread2of2ForFork0InUse]) [2023-08-26 07:50:41,728 INFO L294 olderBase$Statistics]: this new event has 47 ancestors and is cut-off event [2023-08-26 07:50:41,728 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,728 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:41,728 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-26 07:50:44,750 INFO L124 PetriNetUnfolderBase]: 52677/99961 cut-off events. [2023-08-26 07:50:44,751 INFO L125 PetriNetUnfolderBase]: For 31099/31280 co-relation queries the response was YES. [2023-08-26 07:50:44,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221265 conditions, 99961 events. 52677/99961 cut-off events. For 31099/31280 co-relation queries the response was YES. Maximal size of possible extension queue 2324. Compared 1024511 event pairs, 25734 based on Foata normal form. 34/88846 useless extension candidates. Maximal degree in co-relation 173805. Up to 57713 conditions per place. [2023-08-26 07:50:45,156 INFO L140 encePairwiseOnDemand]: 428/443 looper letters, 135 selfloop transitions, 9 changer transitions 1/210 dead transitions. [2023-08-26 07:50:45,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 210 transitions, 984 flow [2023-08-26 07:50:45,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:45,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:45,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 756 transitions. [2023-08-26 07:50:45,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688487584650113 [2023-08-26 07:50:45,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 756 transitions. [2023-08-26 07:50:45,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 756 transitions. [2023-08-26 07:50:45,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:45,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 756 transitions. [2023-08-26 07:50:45,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:45,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:45,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:45,161 INFO L175 Difference]: Start difference. First operand has 126 places, 148 transitions, 512 flow. Second operand 3 states and 756 transitions. [2023-08-26 07:50:45,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 210 transitions, 984 flow [2023-08-26 07:50:45,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 210 transitions, 910 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 07:50:45,247 INFO L231 Difference]: Finished difference. Result has 127 places, 152 transitions, 518 flow [2023-08-26 07:50:45,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=518, PETRI_PLACES=127, PETRI_TRANSITIONS=152} [2023-08-26 07:50:45,248 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, 3 predicate places. [2023-08-26 07:50:45,248 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 152 transitions, 518 flow [2023-08-26 07:50:45,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:45,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:45,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:45,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 07:50:45,248 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONASSERT, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-26 07:50:45,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:45,249 INFO L85 PathProgramCache]: Analyzing trace with hash -791912309, now seen corresponding path program 1 times [2023-08-26 07:50:45,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:45,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459922381] [2023-08-26 07:50:45,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:45,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:45,268 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 07:50:45,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:45,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459922381] [2023-08-26 07:50:45,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459922381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:50:45,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755827791] [2023-08-26 07:50:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:45,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:45,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:50:45,270 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 07:50:45,271 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 07:50:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:45,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:50:45,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:50:45,325 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 07:50:45,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 07:50:45,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755827791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:45,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 07:50:45,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-26 07:50:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843921887] [2023-08-26 07:50:45,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:45,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:45,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 07:50:45,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 443 [2023-08-26 07:50:45,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 152 transitions, 518 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:45,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:45,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 443 [2023-08-26 07:50:45,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:52,527 INFO L124 PetriNetUnfolderBase]: 78659/135828 cut-off events. [2023-08-26 07:50:52,527 INFO L125 PetriNetUnfolderBase]: For 38553/41122 co-relation queries the response was YES. [2023-08-26 07:50:52,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321827 conditions, 135828 events. 78659/135828 cut-off events. For 38553/41122 co-relation queries the response was YES. Maximal size of possible extension queue 2732. Compared 1273190 event pairs, 48984 based on Foata normal form. 180/115227 useless extension candidates. Maximal degree in co-relation 181065. Up to 113138 conditions per place. [2023-08-26 07:50:53,254 INFO L140 encePairwiseOnDemand]: 427/443 looper letters, 174 selfloop transitions, 28 changer transitions 0/233 dead transitions. [2023-08-26 07:50:53,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 233 transitions, 1198 flow [2023-08-26 07:50:53,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:50:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:50:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2023-08-26 07:50:53,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079006772009029 [2023-08-26 07:50:53,256 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 675 transitions. [2023-08-26 07:50:53,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 675 transitions. [2023-08-26 07:50:53,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:53,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 675 transitions. [2023-08-26 07:50:53,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 443.0) internal successors, (1772), 4 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,260 INFO L175 Difference]: Start difference. First operand has 127 places, 152 transitions, 518 flow. Second operand 3 states and 675 transitions. [2023-08-26 07:50:53,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 233 transitions, 1198 flow [2023-08-26 07:50:53,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 233 transitions, 1174 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 07:50:53,328 INFO L231 Difference]: Finished difference. Result has 127 places, 178 transitions, 764 flow [2023-08-26 07:50:53,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=764, PETRI_PLACES=127, PETRI_TRANSITIONS=178} [2023-08-26 07:50:53,329 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, 3 predicate places. [2023-08-26 07:50:53,329 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 178 transitions, 764 flow [2023-08-26 07:50:53,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:53,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 07:50:53,335 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 07:50:53,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:53,536 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONASSERT, t_funErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-08-26 07:50:53,536 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash -521010381, now seen corresponding path program 1 times [2023-08-26 07:50:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:53,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371838316] [2023-08-26 07:50:53,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:53,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:53,572 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 07:50:53,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:53,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371838316] [2023-08-26 07:50:53,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371838316] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 07:50:53,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309303946] [2023-08-26 07:50:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:53,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:53,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 07:50:53,574 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 07:50:53,576 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 07:50:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:53,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 07:50:53,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 07:50:53,648 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 07:50:53,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 07:50:53,673 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 07:50:53,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309303946] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 07:50:53,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 07:50:53,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 07:50:53,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021952495] [2023-08-26 07:50:53,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 07:50:53,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 07:50:53,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:53,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 07:50:53,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 07:50:53,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 443 [2023-08-26 07:50:53,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 178 transitions, 764 flow. Second operand has 7 states, 7 states have (on average 223.57142857142858) internal successors, (1565), 7 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:53,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 443 [2023-08-26 07:50:53,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:50:53,739 INFO L124 PetriNetUnfolderBase]: 280/568 cut-off events. [2023-08-26 07:50:53,739 INFO L125 PetriNetUnfolderBase]: For 324/358 co-relation queries the response was YES. [2023-08-26 07:50:53,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 568 events. 280/568 cut-off events. For 324/358 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2852 event pairs, 59 based on Foata normal form. 73/608 useless extension candidates. Maximal degree in co-relation 1365. Up to 331 conditions per place. [2023-08-26 07:50:53,741 INFO L140 encePairwiseOnDemand]: 440/443 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-08-26 07:50:53,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 237 flow [2023-08-26 07:50:53,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 07:50:53,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 07:50:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1142 transitions. [2023-08-26 07:50:53,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155756207674943 [2023-08-26 07:50:53,751 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1142 transitions. [2023-08-26 07:50:53,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1142 transitions. [2023-08-26 07:50:53,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:50:53,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1142 transitions. [2023-08-26 07:50:53,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.4) internal successors, (1142), 5 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 443.0) internal successors, (2658), 6 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,759 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 443.0) internal successors, (2658), 6 states have internal predecessors, (2658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,759 INFO L175 Difference]: Start difference. First operand has 127 places, 178 transitions, 764 flow. Second operand 5 states and 1142 transitions. [2023-08-26 07:50:53,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 237 flow [2023-08-26 07:50:53,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 216 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-26 07:50:53,760 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-26 07:50:53,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=443, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-26 07:50:53,761 INFO L281 CegarLoopForPetriNet]: 124 programPoint places, -84 predicate places. [2023-08-26 07:50:53,761 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-26 07:50:53,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 223.57142857142858) internal successors, (1565), 7 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (27 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (26 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (25 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (24 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONDATA_RACE (23 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (22 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (20 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (19 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 28 remaining) [2023-08-26 07:50:53,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (17 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (14 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (13 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (11 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (10 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONASSERT (8 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (7 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (6 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONDATA_RACE (5 of 28 remaining) [2023-08-26 07:50:53,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 28 remaining) [2023-08-26 07:50:53,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (3 of 28 remaining) [2023-08-26 07:50:53,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (2 of 28 remaining) [2023-08-26 07:50:53,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (1 of 28 remaining) [2023-08-26 07:50:53,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 28 remaining) [2023-08-26 07:50:53,768 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 07:50:53,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 07:50:53,968 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 07:50:53,969 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-26 07:50:53,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:54,001 INFO L124 PetriNetUnfolderBase]: 62/471 cut-off events. [2023-08-26 07:50:54,001 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:54,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 471 events. 62/471 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2253 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 283. Up to 9 conditions per place. [2023-08-26 07:50:54,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:54,005 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:54,006 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:54,006 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:54,006 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:54,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 268 transitions, 554 flow [2023-08-26 07:50:54,038 INFO L124 PetriNetUnfolderBase]: 62/471 cut-off events. [2023-08-26 07:50:54,038 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 07:50:54,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 471 events. 62/471 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2253 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 283. Up to 9 conditions per place. [2023-08-26 07:50:54,048 INFO L119 LiptonReduction]: Number of co-enabled transitions 37772 [2023-08-26 07:50:56,220 INFO L134 LiptonReduction]: Checked pairs total: 154734 [2023-08-26 07:50:56,220 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-26 07:50:56,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-26 07:50:56,221 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;@7c7ccb61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:56,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-26 07:50:56,226 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:56,226 INFO L124 PetriNetUnfolderBase]: 23/128 cut-off events. [2023-08-26 07:50:56,226 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 07:50:56,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:56,227 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 07:50:56,227 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-26 07:50:56,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:56,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1937119831, now seen corresponding path program 1 times [2023-08-26 07:50:56,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:56,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986791336] [2023-08-26 07:50:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:56,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:56,243 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 07:50:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 07:50:56,250 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 07:50:56,250 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 07:50:56,250 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-26 07:50:56,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 07:50:56,250 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-26 07:50:56,251 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-26 07:50:56,251 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 07:50:56,251 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 07:50:56,268 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 07:50:56,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 341 transitions, 712 flow [2023-08-26 07:50:56,350 INFO L124 PetriNetUnfolderBase]: 93/706 cut-off events. [2023-08-26 07:50:56,351 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:50:56,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 706 events. 93/706 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3503 event pairs, 1 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 479. Up to 16 conditions per place. [2023-08-26 07:50:56,359 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 341 transitions, 712 flow [2023-08-26 07:50:56,364 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 341 transitions, 712 flow [2023-08-26 07:50:56,364 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 07:50:56,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 341 transitions, 712 flow [2023-08-26 07:50:56,364 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 341 transitions, 712 flow [2023-08-26 07:50:56,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 341 transitions, 712 flow [2023-08-26 07:50:56,436 INFO L124 PetriNetUnfolderBase]: 93/706 cut-off events. [2023-08-26 07:50:56,436 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 07:50:56,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 706 events. 93/706 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3503 event pairs, 1 based on Foata normal form. 0/556 useless extension candidates. Maximal degree in co-relation 479. Up to 16 conditions per place. [2023-08-26 07:50:56,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 72420 [2023-08-26 07:50:58,872 INFO L134 LiptonReduction]: Checked pairs total: 312590 [2023-08-26 07:50:58,872 INFO L136 LiptonReduction]: Total number of compositions: 210 [2023-08-26 07:50:58,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 07:50:58,874 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;@7c7ccb61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 07:50:58,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-26 07:50:58,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 07:50:58,875 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2023-08-26 07:50:58,875 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 07:50:58,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:50:58,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 07:50:58,875 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONASSERT, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-26 07:50:58,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:50:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2061535095, now seen corresponding path program 1 times [2023-08-26 07:50:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:50:58,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33864930] [2023-08-26 07:50:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:50:58,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:50:58,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:50:58,901 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 07:50:58,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:50:58,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33864930] [2023-08-26 07:50:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33864930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:50:58,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:50:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:50:58,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876245009] [2023-08-26 07:50:58,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:50:58,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:50:58,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:50:58,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:50:58,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:50:58,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 551 [2023-08-26 07:50:58,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 202 transitions, 434 flow. Second operand has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:50:58,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:50:58,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 551 [2023-08-26 07:50:58,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 07:51:22,066 INFO L124 PetriNetUnfolderBase]: 258070/417419 cut-off events. [2023-08-26 07:51:22,067 INFO L125 PetriNetUnfolderBase]: For 2778/2778 co-relation queries the response was YES. [2023-08-26 07:51:22,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767754 conditions, 417419 events. 258070/417419 cut-off events. For 2778/2778 co-relation queries the response was YES. Maximal size of possible extension queue 10103. Compared 4472122 event pairs, 235722 based on Foata normal form. 79043/428962 useless extension candidates. Maximal degree in co-relation 116349. Up to 348136 conditions per place. [2023-08-26 07:51:24,635 INFO L140 encePairwiseOnDemand]: 509/551 looper letters, 90 selfloop transitions, 2 changer transitions 0/177 dead transitions. [2023-08-26 07:51:24,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 177 transitions, 568 flow [2023-08-26 07:51:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 07:51:24,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 07:51:24,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 985 transitions. [2023-08-26 07:51:24,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958862673926195 [2023-08-26 07:51:24,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 985 transitions. [2023-08-26 07:51:24,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 985 transitions. [2023-08-26 07:51:24,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 07:51:24,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 985 transitions. [2023-08-26 07:51:24,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 328.3333333333333) internal successors, (985), 3 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:51:24,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:51:24,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:51:24,642 INFO L175 Difference]: Start difference. First operand has 165 places, 202 transitions, 434 flow. Second operand 3 states and 985 transitions. [2023-08-26 07:51:24,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 177 transitions, 568 flow [2023-08-26 07:51:24,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 177 transitions, 568 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 07:51:24,645 INFO L231 Difference]: Finished difference. Result has 164 places, 161 transitions, 362 flow [2023-08-26 07:51:24,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=362, PETRI_PLACES=164, PETRI_TRANSITIONS=161} [2023-08-26 07:51:24,645 INFO L281 CegarLoopForPetriNet]: 165 programPoint places, -1 predicate places. [2023-08-26 07:51:24,646 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 161 transitions, 362 flow [2023-08-26 07:51:24,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 282.6666666666667) internal successors, (848), 3 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:51:24,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 07:51:24,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 07:51:24,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 07:51:24,646 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr5ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONASSERT, t_funErr6ASSERT_VIOLATIONDATA_RACE, t_funErr6ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-08-26 07:51:24,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 07:51:24,646 INFO L85 PathProgramCache]: Analyzing trace with hash -489130874, now seen corresponding path program 1 times [2023-08-26 07:51:24,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 07:51:24,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567515248] [2023-08-26 07:51:24,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 07:51:24,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 07:51:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 07:51:24,657 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 07:51:24,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 07:51:24,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567515248] [2023-08-26 07:51:24,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567515248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 07:51:24,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 07:51:24,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 07:51:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454099896] [2023-08-26 07:51:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 07:51:24,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 07:51:24,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 07:51:24,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 07:51:24,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 07:51:24,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 551 [2023-08-26 07:51:24,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 161 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 222.0) internal successors, (666), 3 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 07:51:24,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 07:51:24,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 551 [2023-08-26 07:51:24,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand