/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread-atomic/peterson-b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 18:22:06,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 18:22:06,582 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 [2023-08-24 18:22:06,586 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 18:22:06,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 18:22:06,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 18:22:06,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 18:22:06,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 18:22:06,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 18:22:06,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 18:22:06,623 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 18:22:06,624 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 18:22:06,624 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 18:22:06,624 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 18:22:06,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 18:22:06,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 18:22:06,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 18:22:06,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 18:22:06,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 18:22:06,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 18:22:06,626 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 18:22:06,628 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 18:22:06,628 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 18:22:06,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 18:22:06,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 18:22:06,629 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 18:22:06,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 18:22:06,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:22:06,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 18:22:06,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 18:22:06,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 18:22:06,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 18:22:06,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 18:22:06,630 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 18:22:06,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 18:22:06,631 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-24 18:22:06,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 18:22:06,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 18:22:06,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 18:22:06,886 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 18:22:06,886 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 18:22:06,887 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/peterson-b.i [2023-08-24 18:22:07,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 18:22:08,178 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 18:22:08,179 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/peterson-b.i [2023-08-24 18:22:08,191 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92da32d7/bdf4b981be9144a8801a6ce97d32093f/FLAGbd831fcd6 [2023-08-24 18:22:08,204 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d92da32d7/bdf4b981be9144a8801a6ce97d32093f [2023-08-24 18:22:08,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 18:22:08,209 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 18:22:08,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 18:22:08,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 18:22:08,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 18:22:08,214 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,214 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65514fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08, skipping insertion in model container [2023-08-24 18:22:08,214 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,251 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 18:22:08,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:22:08,494 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 18:22:08,506 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-24 18:22:08,507 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [249] [2023-08-24 18:22:08,524 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 18:22:08,553 INFO L206 MainTranslator]: Completed translation [2023-08-24 18:22:08,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08 WrapperNode [2023-08-24 18:22:08,554 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 18:22:08,555 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 18:22:08,555 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 18:22:08,555 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 18:22:08,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,586 INFO L138 Inliner]: procedures = 167, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 143 [2023-08-24 18:22:08,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 18:22:08,586 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 18:22:08,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 18:22:08,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 18:22:08,592 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,594 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,601 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,603 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,604 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,605 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 18:22:08,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 18:22:08,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 18:22:08,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 18:22:08,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (1/1) ... [2023-08-24 18:22:08,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 18:22:08,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 18:22:08,634 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) [2023-08-24 18:22:08,645 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 [2023-08-24 18:22:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 18:22:08,671 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-08-24 18:22:08,672 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-08-24 18:22:08,672 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-24 18:22:08,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-24 18:22:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 18:22:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 18:22:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 18:22:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 18:22:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 18:22:08,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 18:22:08,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 18:22:08,674 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 18:22:08,853 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 18:22:08,854 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 18:22:09,109 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 18:22:09,114 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 18:22:09,114 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 18:22:09,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:22:09 BoogieIcfgContainer [2023-08-24 18:22:09,117 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 18:22:09,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 18:22:09,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 18:22:09,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 18:22:09,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 06:22:08" (1/3) ... [2023-08-24 18:22:09,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212bbf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:22:09, skipping insertion in model container [2023-08-24 18:22:09,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 06:22:08" (2/3) ... [2023-08-24 18:22:09,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@212bbf81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 06:22:09, skipping insertion in model container [2023-08-24 18:22:09,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 06:22:09" (3/3) ... [2023-08-24 18:22:09,123 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson-b.i [2023-08-24 18:22:09,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 18:22:09,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-24 18:22:09,133 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 18:22:09,196 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 18:22:09,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 162 transitions, 340 flow [2023-08-24 18:22:09,265 INFO L124 PetriNetUnfolderBase]: 10/160 cut-off events. [2023-08-24 18:22:09,265 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 18:22:09,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 160 events. 10/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 329 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-08-24 18:22:09,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 162 transitions, 340 flow [2023-08-24 18:22:09,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 151 transitions, 311 flow [2023-08-24 18:22:09,274 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 18:22:09,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 151 transitions, 311 flow [2023-08-24 18:22:09,281 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 151 transitions, 311 flow [2023-08-24 18:22:09,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 151 transitions, 311 flow [2023-08-24 18:22:09,302 INFO L124 PetriNetUnfolderBase]: 10/151 cut-off events. [2023-08-24 18:22:09,302 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-24 18:22:09,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 151 events. 10/151 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 330 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 127. Up to 2 conditions per place. [2023-08-24 18:22:09,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 9396 [2023-08-24 18:22:10,865 INFO L134 LiptonReduction]: Checked pairs total: 33507 [2023-08-24 18:22:10,865 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-24 18:22:10,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 18:22:10,880 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;@79c131e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 18:22:10,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-24 18:22:10,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 18:22:10,882 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-24 18:22:10,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 18:22:10,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:10,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-24 18:22:10,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:10,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 572533813, now seen corresponding path program 1 times [2023-08-24 18:22:10,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:10,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368146226] [2023-08-24 18:22:10,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:10,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:11,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:11,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368146226] [2023-08-24 18:22:11,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368146226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:22:11,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:22:11,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:22:11,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055013990] [2023-08-24 18:22:11,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:22:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:22:11,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:11,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:22:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:22:11,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 256 [2023-08-24 18:22:11,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 81 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:11,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 256 [2023-08-24 18:22:11,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:11,258 INFO L124 PetriNetUnfolderBase]: 1084/2333 cut-off events. [2023-08-24 18:22:11,258 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-24 18:22:11,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4153 conditions, 2333 events. 1084/2333 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 14578 event pairs, 820 based on Foata normal form. 72/1956 useless extension candidates. Maximal degree in co-relation 3990. Up to 1566 conditions per place. [2023-08-24 18:22:11,268 INFO L140 encePairwiseOnDemand]: 243/256 looper letters, 60 selfloop transitions, 4 changer transitions 0/92 dead transitions. [2023-08-24 18:22:11,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 324 flow [2023-08-24 18:22:11,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:22:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:22:11,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-24 18:22:11,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6432291666666666 [2023-08-24 18:22:11,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-24 18:22:11,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-24 18:22:11,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:11,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-24 18:22:11,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,287 INFO L175 Difference]: Start difference. First operand has 78 places, 81 transitions, 171 flow. Second operand 3 states and 494 transitions. [2023-08-24 18:22:11,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 324 flow [2023-08-24 18:22:11,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 92 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 18:22:11,292 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 174 flow [2023-08-24 18:22:11,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2023-08-24 18:22:11,295 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -4 predicate places. [2023-08-24 18:22:11,295 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 174 flow [2023-08-24 18:22:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:11,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:11,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 18:22:11,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:11,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash 483409270, now seen corresponding path program 1 times [2023-08-24 18:22:11,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:11,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737489811] [2023-08-24 18:22:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:11,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:11,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:11,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:11,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737489811] [2023-08-24 18:22:11,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737489811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:22:11,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:22:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:22:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795028988] [2023-08-24 18:22:11,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:22:11,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:22:11,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:22:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:22:11,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 256 [2023-08-24 18:22:11,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:11,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 256 [2023-08-24 18:22:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:11,485 INFO L124 PetriNetUnfolderBase]: 1145/2490 cut-off events. [2023-08-24 18:22:11,485 INFO L125 PetriNetUnfolderBase]: For 226/253 co-relation queries the response was YES. [2023-08-24 18:22:11,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4615 conditions, 2490 events. 1145/2490 cut-off events. For 226/253 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 16028 event pairs, 841 based on Foata normal form. 0/2012 useless extension candidates. Maximal degree in co-relation 3512. Up to 1661 conditions per place. [2023-08-24 18:22:11,494 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 62 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-24 18:22:11,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 96 transitions, 361 flow [2023-08-24 18:22:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:22:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:22:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-24 18:22:11,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62890625 [2023-08-24 18:22:11,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-24 18:22:11,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-24 18:22:11,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:11,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-24 18:22:11,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,500 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 174 flow. Second operand 3 states and 483 transitions. [2023-08-24 18:22:11,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 96 transitions, 361 flow [2023-08-24 18:22:11,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 96 transitions, 349 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:22:11,502 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 196 flow [2023-08-24 18:22:11,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2023-08-24 18:22:11,503 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -2 predicate places. [2023-08-24 18:22:11,503 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 196 flow [2023-08-24 18:22:11,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:11,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:11,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 18:22:11,504 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:11,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1040218407, now seen corresponding path program 1 times [2023-08-24 18:22:11,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:11,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620772075] [2023-08-24 18:22:11,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:11,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:11,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:11,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620772075] [2023-08-24 18:22:11,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620772075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:22:11,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:22:11,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:22:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886702005] [2023-08-24 18:22:11,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:22:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:22:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:22:11,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:22:11,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 256 [2023-08-24 18:22:11,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:11,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 256 [2023-08-24 18:22:11,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:11,752 INFO L124 PetriNetUnfolderBase]: 1259/2664 cut-off events. [2023-08-24 18:22:11,752 INFO L125 PetriNetUnfolderBase]: For 317/370 co-relation queries the response was YES. [2023-08-24 18:22:11,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5092 conditions, 2664 events. 1259/2664 cut-off events. For 317/370 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 17371 event pairs, 967 based on Foata normal form. 0/2134 useless extension candidates. Maximal degree in co-relation 3850. Up to 1935 conditions per place. [2023-08-24 18:22:11,761 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 63 selfloop transitions, 4 changer transitions 0/98 dead transitions. [2023-08-24 18:22:11,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 98 transitions, 384 flow [2023-08-24 18:22:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:22:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:22:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-24 18:22:11,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2023-08-24 18:22:11,763 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-24 18:22:11,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-24 18:22:11,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:11,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-24 18:22:11,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,765 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 196 flow. Second operand 3 states and 474 transitions. [2023-08-24 18:22:11,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 98 transitions, 384 flow [2023-08-24 18:22:11,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 98 transitions, 372 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:22:11,769 INFO L231 Difference]: Finished difference. Result has 77 places, 79 transitions, 214 flow [2023-08-24 18:22:11,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=77, PETRI_TRANSITIONS=79} [2023-08-24 18:22:11,770 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, -1 predicate places. [2023-08-24 18:22:11,770 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 79 transitions, 214 flow [2023-08-24 18:22:11,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:11,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:11,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 18:22:11,774 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:11,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:11,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1077413557, now seen corresponding path program 1 times [2023-08-24 18:22:11,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:11,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422664741] [2023-08-24 18:22:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:11,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:11,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422664741] [2023-08-24 18:22:11,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422664741] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:22:11,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:22:11,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:22:11,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42025073] [2023-08-24 18:22:11,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:22:11,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:22:11,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:11,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:22:11,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:22:11,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 256 [2023-08-24 18:22:11,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 79 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:11,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:11,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 256 [2023-08-24 18:22:11,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:12,054 INFO L124 PetriNetUnfolderBase]: 1745/3804 cut-off events. [2023-08-24 18:22:12,054 INFO L125 PetriNetUnfolderBase]: For 412/457 co-relation queries the response was YES. [2023-08-24 18:22:12,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7371 conditions, 3804 events. 1745/3804 cut-off events. For 412/457 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 27132 event pairs, 530 based on Foata normal form. 0/3095 useless extension candidates. Maximal degree in co-relation 6202. Up to 1542 conditions per place. [2023-08-24 18:22:12,075 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 77 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2023-08-24 18:22:12,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 461 flow [2023-08-24 18:22:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:22:12,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:22:12,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-24 18:22:12,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6497395833333334 [2023-08-24 18:22:12,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-24 18:22:12,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-24 18:22:12,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:12,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-24 18:22:12,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,079 INFO L175 Difference]: Start difference. First operand has 77 places, 79 transitions, 214 flow. Second operand 3 states and 499 transitions. [2023-08-24 18:22:12,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 461 flow [2023-08-24 18:22:12,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 113 transitions, 457 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:22:12,082 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 258 flow [2023-08-24 18:22:12,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=258, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2023-08-24 18:22:12,083 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 2 predicate places. [2023-08-24 18:22:12,083 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 258 flow [2023-08-24 18:22:12,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:12,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:12,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 18:22:12,084 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr2Err1ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:12,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:12,084 INFO L85 PathProgramCache]: Analyzing trace with hash 220740320, now seen corresponding path program 1 times [2023-08-24 18:22:12,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:12,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223147983] [2023-08-24 18:22:12,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:12,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:12,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:12,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:12,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223147983] [2023-08-24 18:22:12,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223147983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:22:12,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:22:12,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:22:12,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644919621] [2023-08-24 18:22:12,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:22:12,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:22:12,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:12,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:22:12,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:22:12,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 256 [2023-08-24 18:22:12,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:12,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 256 [2023-08-24 18:22:12,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:12,369 INFO L124 PetriNetUnfolderBase]: 2130/4379 cut-off events. [2023-08-24 18:22:12,370 INFO L125 PetriNetUnfolderBase]: For 786/913 co-relation queries the response was YES. [2023-08-24 18:22:12,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8718 conditions, 4379 events. 2130/4379 cut-off events. For 786/913 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 31253 event pairs, 1470 based on Foata normal form. 26/3524 useless extension candidates. Maximal degree in co-relation 7468. Up to 3200 conditions per place. [2023-08-24 18:22:12,390 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 67 selfloop transitions, 5 changer transitions 0/106 dead transitions. [2023-08-24 18:22:12,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 106 transitions, 457 flow [2023-08-24 18:22:12,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:22:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:22:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-24 18:22:12,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171875 [2023-08-24 18:22:12,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-24 18:22:12,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-24 18:22:12,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:12,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-24 18:22:12,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,397 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 258 flow. Second operand 3 states and 474 transitions. [2023-08-24 18:22:12,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 106 transitions, 457 flow [2023-08-24 18:22:12,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 447 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:22:12,400 INFO L231 Difference]: Finished difference. Result has 81 places, 87 transitions, 279 flow [2023-08-24 18:22:12,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=279, PETRI_PLACES=81, PETRI_TRANSITIONS=87} [2023-08-24 18:22:12,401 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 3 predicate places. [2023-08-24 18:22:12,401 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 87 transitions, 279 flow [2023-08-24 18:22:12,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:12,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:12,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 18:22:12,401 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr2Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:12,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:12,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1678209179, now seen corresponding path program 1 times [2023-08-24 18:22:12,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646765365] [2023-08-24 18:22:12,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:12,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:12,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646765365] [2023-08-24 18:22:12,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646765365] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:22:12,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:22:12,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:22:12,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056914381] [2023-08-24 18:22:12,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:22:12,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:22:12,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:12,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:22:12,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:22:12,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 256 [2023-08-24 18:22:12,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 87 transitions, 279 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:12,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 256 [2023-08-24 18:22:12,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:12,767 INFO L124 PetriNetUnfolderBase]: 2722/5763 cut-off events. [2023-08-24 18:22:12,767 INFO L125 PetriNetUnfolderBase]: For 1316/1492 co-relation queries the response was YES. [2023-08-24 18:22:12,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11831 conditions, 5763 events. 2722/5763 cut-off events. For 1316/1492 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 43790 event pairs, 806 based on Foata normal form. 24/4747 useless extension candidates. Maximal degree in co-relation 8702. Up to 2304 conditions per place. [2023-08-24 18:22:12,794 INFO L140 encePairwiseOnDemand]: 251/256 looper letters, 82 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-24 18:22:12,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 121 transitions, 546 flow [2023-08-24 18:22:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:22:12,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:22:12,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-24 18:22:12,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6471354166666666 [2023-08-24 18:22:12,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-24 18:22:12,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-24 18:22:12,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:12,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-24 18:22:12,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,799 INFO L175 Difference]: Start difference. First operand has 81 places, 87 transitions, 279 flow. Second operand 3 states and 497 transitions. [2023-08-24 18:22:12,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 121 transitions, 546 flow [2023-08-24 18:22:12,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 121 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 18:22:12,802 INFO L231 Difference]: Finished difference. Result has 84 places, 92 transitions, 322 flow [2023-08-24 18:22:12,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=84, PETRI_TRANSITIONS=92} [2023-08-24 18:22:12,803 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 6 predicate places. [2023-08-24 18:22:12,803 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 92 transitions, 322 flow [2023-08-24 18:22:12,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:12,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:12,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 18:22:12,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:12,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:12,804 INFO L85 PathProgramCache]: Analyzing trace with hash -936206302, now seen corresponding path program 1 times [2023-08-24 18:22:12,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:12,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117919332] [2023-08-24 18:22:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:12,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 18:22:12,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 18:22:12,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 18:22:12,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117919332] [2023-08-24 18:22:12,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117919332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 18:22:12,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 18:22:12,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 18:22:12,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971338220] [2023-08-24 18:22:12,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 18:22:12,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 18:22:12,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 18:22:12,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 18:22:12,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 18:22:12,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 256 [2023-08-24 18:22:12,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 92 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:12,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 18:22:12,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 256 [2023-08-24 18:22:12,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 18:22:13,391 INFO L124 PetriNetUnfolderBase]: 5247/11010 cut-off events. [2023-08-24 18:22:13,392 INFO L125 PetriNetUnfolderBase]: For 3091/3460 co-relation queries the response was YES. [2023-08-24 18:22:13,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22906 conditions, 11010 events. 5247/11010 cut-off events. For 3091/3460 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 94932 event pairs, 1807 based on Foata normal form. 80/9065 useless extension candidates. Maximal degree in co-relation 15768. Up to 4330 conditions per place. [2023-08-24 18:22:13,451 INFO L140 encePairwiseOnDemand]: 248/256 looper letters, 94 selfloop transitions, 8 changer transitions 0/139 dead transitions. [2023-08-24 18:22:13,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 139 transitions, 679 flow [2023-08-24 18:22:13,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 18:22:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 18:22:13,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-24 18:22:13,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2023-08-24 18:22:13,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-24 18:22:13,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-24 18:22:13,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 18:22:13,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-24 18:22:13,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:13,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:13,456 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:13,456 INFO L175 Difference]: Start difference. First operand has 84 places, 92 transitions, 322 flow. Second operand 3 states and 498 transitions. [2023-08-24 18:22:13,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 139 transitions, 679 flow [2023-08-24 18:22:13,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 139 transitions, 665 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 18:22:13,462 INFO L231 Difference]: Finished difference. Result has 86 places, 100 transitions, 396 flow [2023-08-24 18:22:13,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=396, PETRI_PLACES=86, PETRI_TRANSITIONS=100} [2023-08-24 18:22:13,463 INFO L281 CegarLoopForPetriNet]: 78 programPoint places, 8 predicate places. [2023-08-24 18:22:13,463 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 396 flow [2023-08-24 18:22:13,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 18:22:13,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 18:22:13,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:13,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 18:22:13,466 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err4ASSERT_VIOLATIONDATA_RACE (and 32 more)] === [2023-08-24 18:22:13,467 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 18:22:13,468 INFO L85 PathProgramCache]: Analyzing trace with hash -268228267, now seen corresponding path program 1 times [2023-08-24 18:22:13,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 18:22:13,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603269902] [2023-08-24 18:22:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 18:22:13,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 18:22:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:22:13,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-24 18:22:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-24 18:22:13,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-24 18:22:13,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-24 18:22:13,512 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr2Err0ASSERT_VIOLATIONDATA_RACE (35 of 36 remaining) [2023-08-24 18:22:13,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (34 of 36 remaining) [2023-08-24 18:22:13,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (33 of 36 remaining) [2023-08-24 18:22:13,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (32 of 36 remaining) [2023-08-24 18:22:13,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (31 of 36 remaining) [2023-08-24 18:22:13,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (30 of 36 remaining) [2023-08-24 18:22:13,513 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (29 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONASSERT (28 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (27 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (23 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (22 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (21 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONASSERT (20 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (19 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (17 of 36 remaining) [2023-08-24 18:22:13,514 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (14 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (13 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (12 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (11 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (10 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONASSERT (9 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (8 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (5 of 36 remaining) [2023-08-24 18:22:13,515 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (4 of 36 remaining) [2023-08-24 18:22:13,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 36 remaining) [2023-08-24 18:22:13,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (2 of 36 remaining) [2023-08-24 18:22:13,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONASSERT (1 of 36 remaining) [2023-08-24 18:22:13,516 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (0 of 36 remaining) [2023-08-24 18:22:13,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 18:22:13,516 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 18:22:13,520 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 18:22:13,520 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 18:22:13,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 06:22:13 BasicIcfg [2023-08-24 18:22:13,538 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 18:22:13,538 INFO L158 Benchmark]: Toolchain (without parser) took 5329.21ms. Allocated memory was 337.6MB in the beginning and 513.8MB in the end (delta: 176.2MB). Free memory was 313.0MB in the beginning and 238.1MB in the end (delta: 74.9MB). Peak memory consumption was 252.6MB. Max. memory is 16.0GB. [2023-08-24 18:22:13,538 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 337.6MB. Free memory is still 314.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 18:22:13,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.44ms. Allocated memory is still 337.6MB. Free memory was 312.5MB in the beginning and 293.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 18:22:13,539 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.56ms. Allocated memory is still 337.6MB. Free memory was 293.0MB in the beginning and 290.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:22:13,539 INFO L158 Benchmark]: Boogie Preprocessor took 18.97ms. Allocated memory is still 337.6MB. Free memory was 290.9MB in the beginning and 289.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 18:22:13,539 INFO L158 Benchmark]: RCFGBuilder took 511.42ms. Allocated memory is still 337.6MB. Free memory was 289.4MB in the beginning and 272.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 18:22:13,539 INFO L158 Benchmark]: TraceAbstraction took 4418.67ms. Allocated memory was 337.6MB in the beginning and 513.8MB in the end (delta: 176.2MB). Free memory was 271.6MB in the beginning and 238.1MB in the end (delta: 33.5MB). Peak memory consumption was 212.8MB. Max. memory is 16.0GB. [2023-08-24 18:22:13,540 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 337.6MB. Free memory is still 314.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 343.44ms. Allocated memory is still 337.6MB. Free memory was 312.5MB in the beginning and 293.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.56ms. Allocated memory is still 337.6MB. Free memory was 293.0MB in the beginning and 290.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.97ms. Allocated memory is still 337.6MB. Free memory was 290.9MB in the beginning and 289.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 511.42ms. Allocated memory is still 337.6MB. Free memory was 289.4MB in the beginning and 272.1MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 4418.67ms. Allocated memory was 337.6MB in the beginning and 513.8MB in the end (delta: 176.2MB). Free memory was 271.6MB in the beginning and 238.1MB in the end (delta: 33.5MB). Peak memory consumption was 212.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] - GenericResultAtLocation [Line: 249]: Unsoundness Warning unspecified type, defaulting to int C: short [249] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 148 PlacesBefore, 78 PlacesAfterwards, 151 TransitionsBefore, 81 TransitionsAfterwards, 9396 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 69 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 0 ChoiceCompositions, 94 TotalNumberOfCompositions, 33507 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14724, independent: 14113, independent conditional: 0, independent unconditional: 14113, dependent: 611, dependent conditional: 0, dependent unconditional: 611, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4868, independent: 4766, independent conditional: 0, independent unconditional: 4766, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 14724, independent: 9347, independent conditional: 0, independent unconditional: 9347, dependent: 509, dependent conditional: 0, dependent unconditional: 509, unknown: 4868, unknown conditional: 0, unknown unconditional: 4868] , Statistics on independence cache: Total cache size (in pairs): 1042, Positive cache size: 976, Positive conditional cache size: 0, Positive unconditional cache size: 976, Negative cache size: 66, Negative conditional cache size: 0, Negative unconditional cache size: 66, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - DataRaceFoundResult [Line: 697]: Data race detected Data race detected The following path leads to a data race: [L684] 0 int flag1 = 0, flag2 = 0; [L685] 0 int turn; [L686] 0 int x; [L706] 0 pthread_t t1, t2; [L707] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [flag1=0, flag2=0, pthread_create(&t1, 0, thr1, 0)=0, t1={5:0}, t2={3:0}, turn=0, x=0] [L688] 1 flag1 = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=0, turn=0, x=0] [L689] 1 turn = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=0, turn=1, x=0] [L708] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [flag1=1, flag2=0, pthread_create(&t2, 0, thr2, 0)=1, t1={5:0}, t2={3:0}, turn=1, x=0] [L697] 2 flag2 = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2 = 1=51, flag2=1, turn=1, x=0] [L690] 1 flag2==1 VAL [_={0:0}, _={0:0}, flag1=1, flag2=1, turn=1, x=0] [L697] 2 flag2 = 1 VAL [_={0:0}, _={0:0}, flag1=1, flag2 = 1=51, flag2=1, turn=1, x=0] Now there is a data race on ~flag2~0 between C: flag2==1 [690] and C: flag2 = 1 [697] - UnprovableResult [Line: 698]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 701]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 688]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 689]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 691]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 690]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 692]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 693]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 710]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 708]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 707]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 255 locations, 36 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 708 IncrementalHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 42 mSDtfsCounter, 708 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=396occurred in iteration=7, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-24 18:22:13,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...