/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true -i ../../../trunk/examples/svcomp/pthread/sync01.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-25 21:59:33,094 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-25 21:59:33,157 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-25 21:59:33,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-25 21:59:33,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-25 21:59:33,186 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-25 21:59:33,186 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-25 21:59:33,187 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-25 21:59:33,187 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-25 21:59:33,191 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-25 21:59:33,191 INFO L153 SettingsManager]: * Use SBE=true [2023-08-25 21:59:33,191 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-25 21:59:33,191 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-25 21:59:33,192 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-25 21:59:33,193 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-25 21:59:33,193 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-25 21:59:33,193 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-25 21:59:33,193 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-25 21:59:33,193 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-25 21:59:33,193 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-25 21:59:33,193 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-25 21:59:33,194 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-25 21:59:33,194 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-25 21:59:33,195 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-25 21:59:33,195 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-25 21:59:33,195 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-25 21:59:33,195 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-25 21:59:33,195 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:59:33,195 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-25 21:59:33,196 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-25 21:59:33,196 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-25 21:59:33,196 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-25 21:59:33,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-25 21:59:33,197 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-25 21:59:33,197 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-25 21:59:33,197 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true [2023-08-25 21:59:33,413 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-25 21:59:33,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-25 21:59:33,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-25 21:59:33,432 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-25 21:59:33,433 INFO L274 PluginConnector]: CDTParser initialized [2023-08-25 21:59:33,434 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/sync01.i [2023-08-25 21:59:34,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-25 21:59:34,650 INFO L384 CDTParser]: Found 1 translation units. [2023-08-25 21:59:34,650 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/sync01.i [2023-08-25 21:59:34,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9eeaf5d/c8378feb0895440aa0c2b14b10ece044/FLAG40b23d617 [2023-08-25 21:59:34,674 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a9eeaf5d/c8378feb0895440aa0c2b14b10ece044 [2023-08-25 21:59:34,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-25 21:59:34,678 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-25 21:59:34,680 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-25 21:59:34,680 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-25 21:59:34,682 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-25 21:59:34,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:59:34" (1/1) ... [2023-08-25 21:59:34,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d820d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:34, skipping insertion in model container [2023-08-25 21:59:34,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 09:59:34" (1/1) ... [2023-08-25 21:59:34,730 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-25 21:59:35,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:59:35,058 INFO L201 MainTranslator]: Completed pre-run [2023-08-25 21:59:35,081 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [133] [2023-08-25 21:59:35,087 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [495] [2023-08-25 21:59:35,087 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [495] [2023-08-25 21:59:35,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-25 21:59:35,160 INFO L206 MainTranslator]: Completed translation [2023-08-25 21:59:35,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35 WrapperNode [2023-08-25 21:59:35,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-25 21:59:35,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-25 21:59:35,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-25 21:59:35,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-25 21:59:35,166 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,213 INFO L138 Inliner]: procedures = 268, calls = 47, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2023-08-25 21:59:35,214 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-25 21:59:35,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-25 21:59:35,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-25 21:59:35,215 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-25 21:59:35,220 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,220 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,234 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,235 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,239 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,241 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,242 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,244 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-25 21:59:35,245 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-25 21:59:35,245 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-25 21:59:35,245 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-25 21:59:35,246 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (1/1) ... [2023-08-25 21:59:35,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-25 21:59:35,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-25 21:59:35,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-25 21:59:35,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-25 21:59:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-25 21:59:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-25 21:59:35,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-25 21:59:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-25 21:59:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-25 21:59:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-25 21:59:35,296 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-25 21:59:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-25 21:59:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-25 21:59:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-25 21:59:35,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-25 21:59:35,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-25 21:59:35,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-25 21:59:35,297 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-25 21:59:35,393 INFO L236 CfgBuilder]: Building ICFG [2023-08-25 21:59:35,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-25 21:59:35,622 INFO L277 CfgBuilder]: Performing block encoding [2023-08-25 21:59:35,627 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-25 21:59:35,627 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-25 21:59:35,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:59:35 BoogieIcfgContainer [2023-08-25 21:59:35,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-25 21:59:35,631 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-25 21:59:35,631 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-25 21:59:35,633 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-25 21:59:35,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 09:59:34" (1/3) ... [2023-08-25 21:59:35,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c4a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:59:35, skipping insertion in model container [2023-08-25 21:59:35,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 09:59:35" (2/3) ... [2023-08-25 21:59:35,634 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c4a61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 09:59:35, skipping insertion in model container [2023-08-25 21:59:35,634 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 09:59:35" (3/3) ... [2023-08-25 21:59:35,635 INFO L112 eAbstractionObserver]: Analyzing ICFG sync01.i [2023-08-25 21:59:35,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-25 21:59:35,646 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-25 21:59:35,646 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-25 21:59:35,709 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-25 21:59:35,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 149 transitions, 314 flow [2023-08-25 21:59:35,786 INFO L124 PetriNetUnfolderBase]: 6/147 cut-off events. [2023-08-25 21:59:35,786 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:59:35,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 147 events. 6/147 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-08-25 21:59:35,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 149 transitions, 314 flow [2023-08-25 21:59:35,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 135 transitions, 282 flow [2023-08-25 21:59:35,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-25 21:59:35,811 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 135 transitions, 282 flow [2023-08-25 21:59:35,813 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 135 transitions, 282 flow [2023-08-25 21:59:35,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 135 transitions, 282 flow [2023-08-25 21:59:35,855 INFO L124 PetriNetUnfolderBase]: 4/135 cut-off events. [2023-08-25 21:59:35,855 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-25 21:59:35,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 135 events. 4/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2023-08-25 21:59:35,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 3068 [2023-08-25 21:59:39,631 INFO L134 LiptonReduction]: Checked pairs total: 13361 [2023-08-25 21:59:39,631 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-25 21:59:39,639 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-25 21:59:39,643 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;@7bcf6c08, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-25 21:59:39,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-25 21:59:39,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-25 21:59:39,644 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-25 21:59:39,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-25 21:59:39,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:39,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-25 21:59:39,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:39,647 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 510, now seen corresponding path program 1 times [2023-08-25 21:59:39,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:39,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490773797] [2023-08-25 21:59:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:39,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:39,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:39,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490773797] [2023-08-25 21:59:39,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490773797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:39,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:39,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-25 21:59:39,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140664808] [2023-08-25 21:59:39,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:39,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-25 21:59:39,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:39,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-25 21:59:39,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-25 21:59:39,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 249 [2023-08-25 21:59:39,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 110 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:39,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:39,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 249 [2023-08-25 21:59:39,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:39,791 INFO L124 PetriNetUnfolderBase]: 96/241 cut-off events. [2023-08-25 21:59:39,791 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-25 21:59:39,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 241 events. 96/241 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 948 event pairs, 72 based on Foata normal form. 24/218 useless extension candidates. Maximal degree in co-relation 372. Up to 170 conditions per place. [2023-08-25 21:59:39,794 INFO L140 encePairwiseOnDemand]: 243/249 looper letters, 19 selfloop transitions, 0 changer transitions 0/43 dead transitions. [2023-08-25 21:59:39,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 136 flow [2023-08-25 21:59:39,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-25 21:59:39,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-25 21:59:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 305 transitions. [2023-08-25 21:59:39,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124497991967871 [2023-08-25 21:59:39,803 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 305 transitions. [2023-08-25 21:59:39,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 305 transitions. [2023-08-25 21:59:39,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:39,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 305 transitions. [2023-08-25 21:59:39,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.5) internal successors, (305), 2 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:39,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:39,812 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 249.0) internal successors, (747), 3 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:39,813 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 110 flow. Second operand 2 states and 305 transitions. [2023-08-25 21:59:39,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 136 flow [2023-08-25 21:59:39,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:59:39,816 INFO L231 Difference]: Finished difference. Result has 45 places, 43 transitions, 90 flow [2023-08-25 21:59:39,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=43} [2023-08-25 21:59:39,819 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2023-08-25 21:59:39,819 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 43 transitions, 90 flow [2023-08-25 21:59:39,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:39,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:39,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-25 21:59:39,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-25 21:59:39,820 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:39,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:39,821 INFO L85 PathProgramCache]: Analyzing trace with hash 483565453, now seen corresponding path program 1 times [2023-08-25 21:59:39,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:39,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318025392] [2023-08-25 21:59:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:39,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:39,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:39,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:39,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318025392] [2023-08-25 21:59:39,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318025392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:39,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:39,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:59:39,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978241126] [2023-08-25 21:59:39,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:39,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:59:39,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:39,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:59:39,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:59:39,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 249 [2023-08-25 21:59:39,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 43 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:39,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:39,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 249 [2023-08-25 21:59:39,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:40,095 INFO L124 PetriNetUnfolderBase]: 613/1200 cut-off events. [2023-08-25 21:59:40,095 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-25 21:59:40,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2270 conditions, 1200 events. 613/1200 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6285 event pairs, 229 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 2267. Up to 587 conditions per place. [2023-08-25 21:59:40,102 INFO L140 encePairwiseOnDemand]: 234/249 looper letters, 51 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2023-08-25 21:59:40,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 70 transitions, 270 flow [2023-08-25 21:59:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:59:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:59:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-25 21:59:40,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542168674698795 [2023-08-25 21:59:40,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-25 21:59:40,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-25 21:59:40,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:40,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-25 21:59:40,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,112 INFO L175 Difference]: Start difference. First operand has 45 places, 43 transitions, 90 flow. Second operand 3 states and 414 transitions. [2023-08-25 21:59:40,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 70 transitions, 270 flow [2023-08-25 21:59:40,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-25 21:59:40,114 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 182 flow [2023-08-25 21:59:40,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-08-25 21:59:40,115 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2023-08-25 21:59:40,115 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 182 flow [2023-08-25 21:59:40,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:40,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:59:40,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-25 21:59:40,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:40,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1484958241, now seen corresponding path program 1 times [2023-08-25 21:59:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852898402] [2023-08-25 21:59:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:40,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:40,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852898402] [2023-08-25 21:59:40,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852898402] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:40,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:40,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:59:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418663574] [2023-08-25 21:59:40,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:40,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:59:40,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:40,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:59:40,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:59:40,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 249 [2023-08-25 21:59:40,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:40,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 249 [2023-08-25 21:59:40,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:40,300 INFO L124 PetriNetUnfolderBase]: 193/453 cut-off events. [2023-08-25 21:59:40,300 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-25 21:59:40,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 453 events. 193/453 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2032 event pairs, 89 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 924. Up to 230 conditions per place. [2023-08-25 21:59:40,302 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 25 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-25 21:59:40,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 49 transitions, 212 flow [2023-08-25 21:59:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:59:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:59:40,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-08-25 21:59:40,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528781793842035 [2023-08-25 21:59:40,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-08-25 21:59:40,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-08-25 21:59:40,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:40,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-08-25 21:59:40,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,306 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 182 flow. Second operand 3 states and 413 transitions. [2023-08-25 21:59:40,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 49 transitions, 212 flow [2023-08-25 21:59:40,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:59:40,308 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 142 flow [2023-08-25 21:59:40,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-08-25 21:59:40,308 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2023-08-25 21:59:40,308 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 142 flow [2023-08-25 21:59:40,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:40,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:59:40,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-25 21:59:40,309 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:40,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:40,309 INFO L85 PathProgramCache]: Analyzing trace with hash 81240851, now seen corresponding path program 1 times [2023-08-25 21:59:40,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:40,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264459393] [2023-08-25 21:59:40,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:40,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:40,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:40,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:40,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264459393] [2023-08-25 21:59:40,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264459393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:40,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:40,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:59:40,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689458204] [2023-08-25 21:59:40,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:40,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:59:40,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:40,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:59:40,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:59:40,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 249 [2023-08-25 21:59:40,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:40,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 249 [2023-08-25 21:59:40,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:40,424 INFO L124 PetriNetUnfolderBase]: 357/702 cut-off events. [2023-08-25 21:59:40,425 INFO L125 PetriNetUnfolderBase]: For 88/92 co-relation queries the response was YES. [2023-08-25 21:59:40,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 702 events. 357/702 cut-off events. For 88/92 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2859 event pairs, 155 based on Foata normal form. 4/654 useless extension candidates. Maximal degree in co-relation 1566. Up to 455 conditions per place. [2023-08-25 21:59:40,427 INFO L140 encePairwiseOnDemand]: 242/249 looper letters, 52 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-08-25 21:59:40,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 68 transitions, 337 flow [2023-08-25 21:59:40,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:59:40,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:59:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 393 transitions. [2023-08-25 21:59:40,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261044176706827 [2023-08-25 21:59:40,429 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 393 transitions. [2023-08-25 21:59:40,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 393 transitions. [2023-08-25 21:59:40,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:40,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 393 transitions. [2023-08-25 21:59:40,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,431 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 142 flow. Second operand 3 states and 393 transitions. [2023-08-25 21:59:40,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 68 transitions, 337 flow [2023-08-25 21:59:40,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-25 21:59:40,436 INFO L231 Difference]: Finished difference. Result has 48 places, 53 transitions, 224 flow [2023-08-25 21:59:40,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=224, PETRI_PLACES=48, PETRI_TRANSITIONS=53} [2023-08-25 21:59:40,437 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2023-08-25 21:59:40,437 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 53 transitions, 224 flow [2023-08-25 21:59:40,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:40,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:59:40,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-25 21:59:40,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:40,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:40,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1488402943, now seen corresponding path program 1 times [2023-08-25 21:59:40,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:40,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302757067] [2023-08-25 21:59:40,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:40,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:40,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302757067] [2023-08-25 21:59:40,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302757067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:40,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 21:59:40,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75541429] [2023-08-25 21:59:40,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:40,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:59:40,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:40,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:59:40,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:59:40,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 249 [2023-08-25 21:59:40,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 53 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:40,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 249 [2023-08-25 21:59:40,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:40,628 INFO L124 PetriNetUnfolderBase]: 260/549 cut-off events. [2023-08-25 21:59:40,629 INFO L125 PetriNetUnfolderBase]: For 346/392 co-relation queries the response was YES. [2023-08-25 21:59:40,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 549 events. 260/549 cut-off events. For 346/392 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2366 event pairs, 41 based on Foata normal form. 46/577 useless extension candidates. Maximal degree in co-relation 1447. Up to 359 conditions per place. [2023-08-25 21:59:40,631 INFO L140 encePairwiseOnDemand]: 243/249 looper letters, 28 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-25 21:59:40,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 61 transitions, 309 flow [2023-08-25 21:59:40,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-25 21:59:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-25 21:59:40,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-08-25 21:59:40,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48895582329317266 [2023-08-25 21:59:40,633 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-08-25 21:59:40,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-08-25 21:59:40,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:40,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-08-25 21:59:40,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,636 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,637 INFO L175 Difference]: Start difference. First operand has 48 places, 53 transitions, 224 flow. Second operand 4 states and 487 transitions. [2023-08-25 21:59:40,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 61 transitions, 309 flow [2023-08-25 21:59:40,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 61 transitions, 283 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-25 21:59:40,639 INFO L231 Difference]: Finished difference. Result has 51 places, 56 transitions, 236 flow [2023-08-25 21:59:40,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=51, PETRI_TRANSITIONS=56} [2023-08-25 21:59:40,641 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-08-25 21:59:40,641 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 56 transitions, 236 flow [2023-08-25 21:59:40,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:40,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:59:40,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-25 21:59:40,643 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:40,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:40,643 INFO L85 PathProgramCache]: Analyzing trace with hash 765550061, now seen corresponding path program 2 times [2023-08-25 21:59:40,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195874659] [2023-08-25 21:59:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:40,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195874659] [2023-08-25 21:59:40,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195874659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:40,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:40,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 21:59:40,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64985789] [2023-08-25 21:59:40,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:40,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-25 21:59:40,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:40,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-25 21:59:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-25 21:59:40,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 249 [2023-08-25 21:59:40,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 56 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:40,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 249 [2023-08-25 21:59:40,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:40,794 INFO L124 PetriNetUnfolderBase]: 41/148 cut-off events. [2023-08-25 21:59:40,794 INFO L125 PetriNetUnfolderBase]: For 78/78 co-relation queries the response was YES. [2023-08-25 21:59:40,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 148 events. 41/148 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 382 event pairs, 3 based on Foata normal form. 8/156 useless extension candidates. Maximal degree in co-relation 378. Up to 39 conditions per place. [2023-08-25 21:59:40,795 INFO L140 encePairwiseOnDemand]: 241/249 looper letters, 22 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2023-08-25 21:59:40,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 233 flow [2023-08-25 21:59:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-25 21:59:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-25 21:59:40,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-08-25 21:59:40,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4819277108433735 [2023-08-25 21:59:40,797 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-08-25 21:59:40,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-08-25 21:59:40,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:40,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-08-25 21:59:40,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,801 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,801 INFO L175 Difference]: Start difference. First operand has 51 places, 56 transitions, 236 flow. Second operand 5 states and 600 transitions. [2023-08-25 21:59:40,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 233 flow [2023-08-25 21:59:40,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 209 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-25 21:59:40,804 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 152 flow [2023-08-25 21:59:40,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-25 21:59:40,806 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2023-08-25 21:59:40,806 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 152 flow [2023-08-25 21:59:40,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:40,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:59:40,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-25 21:59:40,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:40,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:40,807 INFO L85 PathProgramCache]: Analyzing trace with hash -547778469, now seen corresponding path program 1 times [2023-08-25 21:59:40,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:40,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767480866] [2023-08-25 21:59:40,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:40,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:40,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:40,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767480866] [2023-08-25 21:59:40,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767480866] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:40,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:40,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-25 21:59:40,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113129674] [2023-08-25 21:59:40,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:40,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-25 21:59:40,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:40,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-25 21:59:40,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-25 21:59:40,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 249 [2023-08-25 21:59:40,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:40,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 249 [2023-08-25 21:59:40,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:40,878 INFO L124 PetriNetUnfolderBase]: 48/153 cut-off events. [2023-08-25 21:59:40,878 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2023-08-25 21:59:40,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407 conditions, 153 events. 48/153 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 376 event pairs, 38 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 399. Up to 124 conditions per place. [2023-08-25 21:59:40,879 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 31 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-25 21:59:40,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 40 transitions, 218 flow [2023-08-25 21:59:40,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-25 21:59:40,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-25 21:59:40,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-25 21:59:40,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4979919678714859 [2023-08-25 21:59:40,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-25 21:59:40,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-25 21:59:40,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:40,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-25 21:59:40,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,882 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,882 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 152 flow. Second operand 3 states and 372 transitions. [2023-08-25 21:59:40,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 40 transitions, 218 flow [2023-08-25 21:59:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 188 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-08-25 21:59:40,884 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 124 flow [2023-08-25 21:59:40,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-25 21:59:40,884 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2023-08-25 21:59:40,884 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 124 flow [2023-08-25 21:59:40,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:40,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-25 21:59:40,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-25 21:59:40,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-25 21:59:40,885 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread2Err0ASSERT_VIOLATIONDATA_RACE (and 15 more)] === [2023-08-25 21:59:40,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-25 21:59:40,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1145021350, now seen corresponding path program 1 times [2023-08-25 21:59:40,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-25 21:59:40,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061298674] [2023-08-25 21:59:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-25 21:59:40,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-25 21:59:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-25 21:59:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-25 21:59:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-25 21:59:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061298674] [2023-08-25 21:59:41,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061298674] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-25 21:59:41,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-25 21:59:41,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-25 21:59:41,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821488858] [2023-08-25 21:59:41,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-25 21:59:41,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-25 21:59:41,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-25 21:59:41,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-25 21:59:41,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-25 21:59:41,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 249 [2023-08-25 21:59:41,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:41,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-25 21:59:41,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 249 [2023-08-25 21:59:41,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-25 21:59:41,097 INFO L124 PetriNetUnfolderBase]: 30/119 cut-off events. [2023-08-25 21:59:41,097 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-25 21:59:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264 conditions, 119 events. 30/119 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 287 event pairs, 15 based on Foata normal form. 3/119 useless extension candidates. Maximal degree in co-relation 257. Up to 47 conditions per place. [2023-08-25 21:59:41,097 INFO L140 encePairwiseOnDemand]: 240/249 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-25 21:59:41,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 184 flow [2023-08-25 21:59:41,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-25 21:59:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-25 21:59:41,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1039 transitions. [2023-08-25 21:59:41,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215863453815262 [2023-08-25 21:59:41,100 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1039 transitions. [2023-08-25 21:59:41,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1039 transitions. [2023-08-25 21:59:41,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-25 21:59:41,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1039 transitions. [2023-08-25 21:59:41,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.875) internal successors, (1039), 8 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:41,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:41,104 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:41,104 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 124 flow. Second operand 8 states and 1039 transitions. [2023-08-25 21:59:41,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 184 flow [2023-08-25 21:59:41,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-25 21:59:41,105 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-25 21:59:41,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-25 21:59:41,106 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-08-25 21:59:41,106 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-25 21:59:41,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.5) internal successors, (777), 6 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-25 21:59:41,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (18 of 19 remaining) [2023-08-25 21:59:41,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-08-25 21:59:41,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-08-25 21:59:41,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (8 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2023-08-25 21:59:41,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-08-25 21:59:41,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-08-25 21:59:41,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-08-25 21:59:41,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-08-25 21:59:41,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-08-25 21:59:41,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-08-25 21:59:41,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-25 21:59:41,110 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-25 21:59:41,113 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-25 21:59:41,113 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-25 21:59:41,115 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 09:59:41 BasicIcfg [2023-08-25 21:59:41,115 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-25 21:59:41,116 INFO L158 Benchmark]: Toolchain (without parser) took 6437.37ms. Allocated memory was 423.6MB in the beginning and 580.9MB in the end (delta: 157.3MB). Free memory was 399.1MB in the beginning and 274.0MB in the end (delta: 125.1MB). Peak memory consumption was 283.9MB. Max. memory is 16.0GB. [2023-08-25 21:59:41,116 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory was 401.2MB in the beginning and 401.1MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-25 21:59:41,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 481.15ms. Allocated memory is still 423.6MB. Free memory was 399.1MB in the beginning and 370.5MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-25 21:59:41,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.05ms. Allocated memory is still 423.6MB. Free memory was 370.5MB in the beginning and 368.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:59:41,116 INFO L158 Benchmark]: Boogie Preprocessor took 29.98ms. Allocated memory is still 423.6MB. Free memory was 368.1MB in the beginning and 366.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-25 21:59:41,117 INFO L158 Benchmark]: RCFGBuilder took 383.97ms. Allocated memory is still 423.6MB. Free memory was 366.0MB in the beginning and 396.0MB in the end (delta: -30.0MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. [2023-08-25 21:59:41,117 INFO L158 Benchmark]: TraceAbstraction took 5484.69ms. Allocated memory was 423.6MB in the beginning and 580.9MB in the end (delta: 157.3MB). Free memory was 395.1MB in the beginning and 274.0MB in the end (delta: 121.2MB). Peak memory consumption was 278.3MB. Max. memory is 16.0GB. [2023-08-25 21:59:41,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 423.6MB. Free memory was 401.2MB in the beginning and 401.1MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 481.15ms. Allocated memory is still 423.6MB. Free memory was 399.1MB in the beginning and 370.5MB in the end (delta: 28.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.05ms. Allocated memory is still 423.6MB. Free memory was 370.5MB in the beginning and 368.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.98ms. Allocated memory is still 423.6MB. Free memory was 368.1MB in the beginning and 366.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 383.97ms. Allocated memory is still 423.6MB. Free memory was 366.0MB in the beginning and 396.0MB in the end (delta: -30.0MB). Peak memory consumption was 20.3MB. Max. memory is 16.0GB. * TraceAbstraction took 5484.69ms. Allocated memory was 423.6MB in the beginning and 580.9MB in the end (delta: 157.3MB). Free memory was 395.1MB in the beginning and 274.0MB in the end (delta: 121.2MB). Peak memory consumption was 278.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 133]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [133] - GenericResultAtLocation [Line: 495]: Unsoundness Warning unspecified type, defaulting to int C: short [495] - GenericResultAtLocation [Line: 495]: Unsoundness Warning unspecified type, defaulting to int C: short [495] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 138 PlacesBefore, 52 PlacesAfterwards, 135 TransitionsBefore, 49 TransitionsAfterwards, 3068 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 2 ConcurrentYvCompositions, 0 ChoiceCompositions, 100 TotalNumberOfCompositions, 13361 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4091, independent: 3671, independent conditional: 0, independent unconditional: 3671, dependent: 420, dependent conditional: 0, dependent unconditional: 420, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1533, independent: 1470, independent conditional: 0, independent unconditional: 1470, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4091, independent: 2201, independent conditional: 0, independent unconditional: 2201, dependent: 357, dependent conditional: 0, dependent unconditional: 357, unknown: 1533, unknown conditional: 0, unknown unconditional: 1533] , Statistics on independence cache: Total cache size (in pairs): 278, Positive cache size: 236, Positive conditional cache size: 0, Positive unconditional cache size: 236, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 936]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 938]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 938]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 946]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 948]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 948]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 956]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 962]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 963]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 964]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 20]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 196 locations, 19 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: 5.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 98 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 98 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 495 IncrementalHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 44 mSDtfsCounter, 495 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=236occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 283 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 11 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-25 21:59:41,129 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...